Merge branch 'dev' into liangshiwei/group8

framework/src/Volo.Abp.AspNetCore.Mvc.Client.Common/Volo/Abp/AspNetCore/Mvc/Client/RemotePermissionChecker.cs

@@ -21,7 +21,7 @@ public class RemotePermissionChecker : IPermissionChecker, ITransientDependency
         return configuration.Auth.GrantedPolicies.ContainsKey(name);
     }
 
-    public async Task<bool> IsGrantedAsync(ClaimsPrincipal claimsPrincipal, string name)
+    public async Task<bool> IsGrantedAsync(ClaimsPrincipal? claimsPrincipal, string name)
     {
         /* This provider always works for the current principal. */
         return await IsGrantedAsync(name);
@@ -41,7 +41,7 @@ public class RemotePermissionChecker : IPermissionChecker, ITransientDependency
         return result;
     }
 
-    public async Task<MultiplePermissionGrantResult> IsGrantedAsync(ClaimsPrincipal claimsPrincipal, string[] names)
+    public async Task<MultiplePermissionGrantResult> IsGrantedAsync(ClaimsPrincipal? claimsPrincipal, string[] names)
     {
         /* This provider always works for the current principal. */
         return await IsGrantedAsync(names);

framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationFeatureConfigurationDto.cs

@@ -6,10 +6,10 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
 [Serializable]
 public class ApplicationFeatureConfigurationDto
 {
-    public Dictionary<string, string> Values { get; set; }
+    public Dictionary<string, string?> Values { get; set; }
 
     public ApplicationFeatureConfigurationDto()
     {
-        Values = new Dictionary<string, string>();
+        Values = new Dictionary<string, string?>();
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/Toolbars/ToolbarManager.cs

@@ -56,7 +56,7 @@ public class ToolbarManager : IToolbarManager, ITransientDependency
     {
         foreach (var item in toolbar.Items.Where(x => !x.RequiredPermissionName.IsNullOrWhiteSpace()))
         {
-            item.RequirePermissions(item.RequiredPermissionName);
+            item.RequirePermissions(item.RequiredPermissionName!);
         }
 
         var checkPermissionsToolbarItems = toolbar.Items.Where(x => x.StateCheckers.Any()).ToArray();

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/GlobalFeatures/GlobalFeatureActionFilter.cs

@@ -24,7 +24,7 @@ public class GlobalFeatureActionFilter : IAsyncActionFilter, ITransientDependenc
         if (!GlobalFeatureHelper.IsGlobalFeatureEnabled(context.Controller.GetType(), out var attribute))
         {
             var logger = context.GetService<ILogger<GlobalFeatureActionFilter>>(NullLogger<GlobalFeatureActionFilter>.Instance)!;
-            logger.LogWarning($"The '{context.Controller.GetType().FullName}' controller needs to enable '{attribute.Name}' feature.");
+            logger.LogWarning($"The '{context.Controller.GetType().FullName}' controller needs to enable '{attribute!.Name}' feature.");
             context.Result = new NotFoundResult();
             return;
         }

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/GlobalFeatures/GlobalFeaturePageFilter.cs

@@ -29,7 +29,7 @@ public class GlobalFeaturePageFilter : IAsyncPageFilter, ITransientDependency
         if (!GlobalFeatureHelper.IsGlobalFeatureEnabled(context.HandlerInstance.GetType(), out var attribute))
         {
             var logger = context.GetService<ILogger<GlobalFeatureActionFilter>>(NullLogger<GlobalFeatureActionFilter>.Instance)!;
-            logger.LogWarning($"The '{context.HandlerInstance.GetType().FullName}' page needs to enable '{attribute.Name}' feature.");
+            logger.LogWarning($"The '{context.HandlerInstance.GetType().FullName}' page needs to enable '{attribute!.Name}' feature.");
             context.Result = new NotFoundResult();
             return;
         }

framework/src/Volo.Abp.Auditing.Contracts/Volo.Abp.Auditing.Contracts.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
         <AssemblyName>Volo.Abp.Auditing.Contracts</AssemblyName>
         <PackageId>Volo.Abp.Auditing.Contracts</PackageId>
         <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.Auditing/Volo.Abp.Auditing.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.Auditing</AssemblyName>
     <PackageId>Volo.Abp.Auditing</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/AbpAuditingOptions.cs

@@ -26,7 +26,7 @@ public class AbpAuditingOptions
     /// The name of the application or service writing audit logs.
     /// Default: null.
     /// </summary>
-    public string ApplicationName { get; set; }
+    public string? ApplicationName { get; set; }
 
     /// <summary>
     /// Default: true.

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/AuditLogActionInfo.cs

@@ -7,11 +7,11 @@ namespace Volo.Abp.Auditing;
 [Serializable]
 public class AuditLogActionInfo : IHasExtraProperties
 {
-    public string ServiceName { get; set; }
+    public string ServiceName { get; set; } = default!;
 
-    public string MethodName { get; set; }
+    public string MethodName { get; set; } = default!;
 
-    public string Parameters { get; set; }
+    public string Parameters { get; set; } = default!;
 
     public DateTime ExecutionTime { get; set; }
 

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/AuditLogInfo.cs

@@ -9,43 +9,43 @@ namespace Volo.Abp.Auditing;
 [Serializable]
 public class AuditLogInfo : IHasExtraProperties
 {
-    public string ApplicationName { get; set; }
+    public string? ApplicationName { get; set; }
 
     public Guid? UserId { get; set; }
 
-    public string UserName { get; set; }
+    public string? UserName { get; set; }
 
     public Guid? TenantId { get; set; }
 
-    public string TenantName { get; set; }
+    public string? TenantName { get; set; }
 
     public Guid? ImpersonatorUserId { get; set; }
 
     public Guid? ImpersonatorTenantId { get; set; }
 
-    public string ImpersonatorUserName { get; set; }
+    public string? ImpersonatorUserName { get; set; }
 
-    public string ImpersonatorTenantName { get; set; }
+    public string? ImpersonatorTenantName { get; set; }
 
     public DateTime ExecutionTime { get; set; }
 
     public int ExecutionDuration { get; set; }
 
-    public string ClientId { get; set; }
+    public string? ClientId { get; set; }
 
-    public string CorrelationId { get; set; }
+    public string? CorrelationId { get; set; }
 
-    public string ClientIpAddress { get; set; }
+    public string? ClientIpAddress { get; set; }
 
-    public string ClientName { get; set; }
+    public string? ClientName { get; set; }
 
-    public string BrowserInfo { get; set; }
+    public string? BrowserInfo { get; set; }
 
-    public string HttpMethod { get; set; }
+    public string? HttpMethod { get; set; }
 
     public int? HttpStatusCode { get; set; }
 
-    public string Url { get; set; }
+    public string? Url { get; set; }
 
     public List<AuditLogActionInfo> Actions { get; set; }
 

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/AuditingHelper.cs

@@ -52,7 +52,7 @@ public class AuditingHelper : IAuditingHelper, ITransientDependency
         CorrelationIdProvider = correlationIdProvider;
     }
 
-    public virtual bool ShouldSaveAudit(MethodInfo methodInfo, bool defaultValue = false, bool ignoreIntegrationServiceAttribute = false)
+    public virtual bool ShouldSaveAudit(MethodInfo? methodInfo, bool defaultValue = false, bool ignoreIntegrationServiceAttribute = false)
     {
         if (methodInfo == null)
         {
@@ -150,23 +150,23 @@ public class AuditingHelper : IAuditingHelper, ITransientDependency
 
     public virtual AuditLogActionInfo CreateAuditLogAction(
         AuditLogInfo auditLog,
-        Type type,
+        Type? type,
         MethodInfo method,
-        object[] arguments)
+        object?[] arguments)
     {
         return CreateAuditLogAction(auditLog, type, method, CreateArgumentsDictionary(method, arguments));
     }
 
     public virtual AuditLogActionInfo CreateAuditLogAction(
         AuditLogInfo auditLog,
-        Type type,
+        Type? type,
         MethodInfo method,
-        IDictionary<string, object> arguments)
+        IDictionary<string, object?> arguments)
     {
         var actionInfo = new AuditLogActionInfo
         {
             ServiceName = type != null
-                ? type.FullName
+                ? type.FullName!
                 : "",
             MethodName = method.Name,
             Parameters = SerializeConvertArguments(arguments),
@@ -198,7 +198,7 @@ public class AuditingHelper : IAuditingHelper, ITransientDependency
         }
     }
 
-    protected virtual string SerializeConvertArguments(IDictionary<string, object> arguments)
+    protected virtual string SerializeConvertArguments(IDictionary<string, object?> arguments)
     {
         try
         {
@@ -207,7 +207,7 @@ public class AuditingHelper : IAuditingHelper, ITransientDependency
                 return "{}";
             }
 
-            var dictionary = new Dictionary<string, object>();
+            var dictionary = new Dictionary<string, object?>();
 
             foreach (var argument in arguments)
             {
@@ -230,14 +230,14 @@ public class AuditingHelper : IAuditingHelper, ITransientDependency
         }
     }
 
-    protected virtual Dictionary<string, object> CreateArgumentsDictionary(MethodInfo method, object[] arguments)
+    protected virtual Dictionary<string, object?> CreateArgumentsDictionary(MethodInfo method, object?[] arguments)
     {
         var parameters = method.GetParameters();
-        var dictionary = new Dictionary<string, object>();
+        var dictionary = new Dictionary<string, object?>();
 
         for (var i = 0; i < parameters.Length; i++)
         {
-            dictionary[parameters[i].Name] = arguments[i];
+            dictionary[parameters[i].Name!] = arguments[i];
         }
 
         return dictionary;

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/AuditingInterceptor.cs

@@ -80,7 +80,7 @@ public class AuditingInterceptor : AbpInterceptor, ITransientDependency
     {
         var auditLog = auditLogScope.Log;
 
-        AuditLogActionInfo auditLogAction = null;
+        AuditLogActionInfo? auditLogAction = null;
         if (!options.DisableLogActionInfo)
         {
             auditLogAction = auditingHelper.CreateAuditLogAction(
@@ -127,10 +127,10 @@ public class AuditingInterceptor : AbpInterceptor, ITransientDependency
         {
             try
             {
-                await ProceedByLoggingAsync(invocation, options, auditingHelper, auditingManager.Current);
+                await ProceedByLoggingAsync(invocation, options, auditingHelper, auditingManager.Current!);
 
                 Debug.Assert(auditingManager.Current != null);
-                if (auditingManager.Current.Log.Exceptions.Any())
+                if (auditingManager.Current!.Log.Exceptions.Any())
                 {
                     hasError = true;
                 }
@@ -142,7 +142,7 @@ public class AuditingInterceptor : AbpInterceptor, ITransientDependency
             }
             finally
             {
-                if (await ShouldWriteAuditLogAsync(invocation, auditingManager.Current.Log, options, currentUser, hasError))
+                if (await ShouldWriteAuditLogAsync(invocation, auditingManager.Current!.Log, options, currentUser, hasError))
                 {
                     if (unitOfWorkManager.Current != null)
                     {

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/AuditingManager.cs

@@ -38,7 +38,7 @@ public class AuditingManager : IAuditingManager, ITransientDependency
         _auditingStore = auditingStore;
     }
 
-    public IAuditLogScope Current => _ambientScopeProvider.GetValue(AmbientContextKey);
+    public IAuditLogScope? Current => _ambientScopeProvider.GetValue(AmbientContextKey);
 
     public IAuditLogSaveHandle BeginScope()
     {
@@ -49,7 +49,7 @@ public class AuditingManager : IAuditingManager, ITransientDependency
 
         Debug.Assert(Current != null, "Current != null");
 
-        return new DisposableSaveHandle(this, ambientScope, Current.Log, Stopwatch.StartNew());
+        return new DisposableSaveHandle(this, ambientScope, Current!.Log, Stopwatch.StartNew());
     }
 
     protected virtual void ExecutePostContributors(AuditLogInfo auditLogInfo)

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/EntityChangeInfo.cs

@@ -19,15 +19,15 @@ public class EntityChangeInfo : IHasExtraProperties
     /// </summary>
     public Guid? EntityTenantId { get; set; }
 
-    public string EntityId { get; set; }
+    public string? EntityId { get; set; }
 
-    public string EntityTypeFullName { get; set; }
+    public string? EntityTypeFullName { get; set; }
 
-    public List<EntityPropertyChangeInfo> PropertyChanges { get; set; }
+    public List<EntityPropertyChangeInfo> PropertyChanges { get; set; } = default!;
 
     public ExtraPropertyDictionary ExtraProperties { get; }
 
-    public virtual object EntityEntry { get; set; } //TODO: Try to remove since it breaks serializability
+    public virtual object EntityEntry { get; set; } = default!; //TODO: Try to remove since it breaks serializability
 
     public EntityChangeInfo()
     {

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/EntityPropertyChangeInfo.cs

@@ -23,11 +23,11 @@ public class EntityPropertyChangeInfo
     /// </summary>
     public static int MaxPropertyTypeFullNameLength = 192;
 
-    public virtual string NewValue { get; set; }
+    public virtual string? NewValue { get; set; }
 
-    public virtual string OriginalValue { get; set; }
+    public virtual string? OriginalValue { get; set; }
 
-    public virtual string PropertyName { get; set; }
+    public virtual string PropertyName { get; set; } = default!;
 
-    public virtual string PropertyTypeFullName { get; set; }
+    public virtual string PropertyTypeFullName { get; set; } = default!;
 }

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/IAuditingHelper.cs

@@ -7,7 +7,7 @@ namespace Volo.Abp.Auditing;
 //TODO: Move ShouldSaveAudit & IsEntityHistoryEnabled and rename to IAuditingFactory
 public interface IAuditingHelper
 {
-    bool ShouldSaveAudit(MethodInfo methodInfo, bool defaultValue = false, bool ignoreIntegrationServiceAttribute = false);
+    bool ShouldSaveAudit(MethodInfo? methodInfo, bool defaultValue = false, bool ignoreIntegrationServiceAttribute = false);
 
     bool IsEntityHistoryEnabled(Type entityType, bool defaultValue = false);
 
@@ -15,15 +15,15 @@ public interface IAuditingHelper
 
     AuditLogActionInfo CreateAuditLogAction(
         AuditLogInfo auditLog,
-        Type type,
+        Type? type,
         MethodInfo method,
-        object[] arguments
+        object?[] arguments
     );
 
     AuditLogActionInfo CreateAuditLogAction(
         AuditLogInfo auditLog,
-        Type type,
+        Type? type,
         MethodInfo method,
-        IDictionary<string, object> arguments
+        IDictionary<string, object?> arguments
     );
 }

framework/src/Volo.Abp.Auditing/Volo/Abp/Auditing/IAuditingManager.cs

@@ -4,8 +4,7 @@ namespace Volo.Abp.Auditing;
 
 public interface IAuditingManager
 {
-    [CanBeNull]
+    IAuditLogScope? Current { get; }
-    IAuditLogScope Current { get; }
 
     IAuditLogSaveHandle BeginScope();
 }

framework/src/Volo.Abp.Authorization.Abstractions/Volo.Abp.Authorization.Abstractions.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
         <AssemblyName>Volo.Abp.Authorization.Abstractions</AssemblyName>
         <PackageId>Volo.Abp.Authorization.Abstractions</PackageId>
         <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/AlwaysAllowAuthorizationService.cs

@@ -21,12 +21,12 @@ public class AlwaysAllowAuthorizationService : IAbpAuthorizationService
         _currentPrincipalAccessor = currentPrincipalAccessor;
     }
 
-    public Task<AuthorizationResult> AuthorizeAsync(ClaimsPrincipal user, object resource, IEnumerable<IAuthorizationRequirement> requirements)
+    public Task<AuthorizationResult> AuthorizeAsync(ClaimsPrincipal user, object? resource, IEnumerable<IAuthorizationRequirement> requirements)
     {
         return Task.FromResult(AuthorizationResult.Success());
     }
 
-    public Task<AuthorizationResult> AuthorizeAsync(ClaimsPrincipal user, object resource, string policyName)
+    public Task<AuthorizationResult> AuthorizeAsync(ClaimsPrincipal user, object? resource, string policyName)
     {
         return Task.FromResult(AuthorizationResult.Success());
     }

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/AlwaysAllowPermissionChecker.cs

@@ -17,7 +17,7 @@ public class AlwaysAllowPermissionChecker : IPermissionChecker
         return TaskCache.TrueResult;
     }
 
-    public Task<bool> IsGrantedAsync(ClaimsPrincipal claimsPrincipal, string name)
+    public Task<bool> IsGrantedAsync(ClaimsPrincipal? claimsPrincipal, string name)
     {
         return TaskCache.TrueResult;
     }
@@ -27,7 +27,7 @@ public class AlwaysAllowPermissionChecker : IPermissionChecker
         return IsGrantedAsync(null, names);
     }
 
-    public Task<MultiplePermissionGrantResult> IsGrantedAsync(ClaimsPrincipal claimsPrincipal, string[] names)
+    public Task<MultiplePermissionGrantResult> IsGrantedAsync(ClaimsPrincipal? claimsPrincipal, string[] names)
     {
         return Task.FromResult(new MultiplePermissionGrantResult(names, PermissionGrantResult.Granted));
     }

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/ICanAddChildPermission.cs

@@ -8,7 +8,7 @@ public interface ICanAddChildPermission
 {
     PermissionDefinition AddPermission(
         [NotNull] string name,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
         MultiTenancySides multiTenancySide = MultiTenancySides.Both,
         bool isEnabled = true);
 }

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/IPermissionChecker.cs

@@ -8,9 +8,9 @@ public interface IPermissionChecker
 {
     Task<bool> IsGrantedAsync([NotNull] string name);
 
-    Task<bool> IsGrantedAsync([CanBeNull] ClaimsPrincipal claimsPrincipal, [NotNull] string name);
+    Task<bool> IsGrantedAsync(ClaimsPrincipal? claimsPrincipal, [NotNull] string name);
 
     Task<MultiplePermissionGrantResult> IsGrantedAsync([NotNull] string[] names);
 
-    Task<MultiplePermissionGrantResult> IsGrantedAsync([CanBeNull] ClaimsPrincipal claimsPrincipal, [NotNull] string[] names);
+    Task<MultiplePermissionGrantResult> IsGrantedAsync(ClaimsPrincipal? claimsPrincipal, [NotNull] string[] names);
 }

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/IPermissionDefinitionContext.cs

@@ -25,8 +25,7 @@ public interface IPermissionDefinitionContext
     /// </summary>
     /// <param name="name">Name of the group</param>
     /// <returns></returns>
-    [CanBeNull]
+    PermissionGroupDefinition? GetGroupOrNull(string name);
-    PermissionGroupDefinition GetGroupOrNull(string name);
 
     /// <summary>
     /// Tries to add a new permission group.
@@ -37,7 +36,7 @@ public interface IPermissionDefinitionContext
     /// </summary>
     PermissionGroupDefinition AddGroup(
         [NotNull] string name,
-        ILocalizableString displayName = null);
+        ILocalizableString? displayName = null);
 
     /// <summary>
     /// Tries to remove a permission group.
@@ -51,6 +50,5 @@ public interface IPermissionDefinitionContext
     /// Returns null if can not find the given group.
     /// <param name="name">Name of the group</param>
     /// </summary>
-    [CanBeNull]
+    PermissionDefinition? GetPermissionOrNull([NotNull] string name);
-    PermissionDefinition GetPermissionOrNull([NotNull] string name);
 }

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/IPermissionDefinitionManager.cs

@@ -9,8 +9,7 @@ public interface IPermissionDefinitionManager
     [ItemNotNull]
     Task<PermissionDefinition> GetAsync([NotNull] string name);
 
-    [ItemCanBeNull]
+    Task<PermissionDefinition?> GetOrNullAsync([NotNull] string name);
-    Task<PermissionDefinition> GetOrNullAsync([NotNull] string name);
 
     Task<IReadOnlyList<PermissionDefinition>> GetPermissionsAsync();
 

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs

@@ -20,7 +20,7 @@ public class PermissionDefinition :
     /// Parent of this permission if one exists.
     /// If set, this permission can be granted only if parent is granted.
     /// </summary>
-    public PermissionDefinition Parent { get; private set; }
+    public PermissionDefinition? Parent { get; private set; }
 
     /// <summary>
     /// MultiTenancy side.
@@ -40,7 +40,7 @@ public class PermissionDefinition :
         get => _displayName;
         set => _displayName = Check.NotNull(value, nameof(value));
     }
-    private ILocalizableString _displayName;
+    private ILocalizableString _displayName = default!;
 
     public IReadOnlyList<PermissionDefinition> Children => _children.ToImmutableList();
     private readonly List<PermissionDefinition> _children;
@@ -48,7 +48,7 @@ public class PermissionDefinition :
     /// <summary>
     /// Can be used to get/set custom properties for this permission definition.
     /// </summary>
-    public Dictionary<string, object> Properties { get; }
+    public Dictionary<string, object?> Properties { get; }
 
     /// <summary>
     /// Indicates whether this permission is enabled or disabled.
@@ -71,14 +71,14 @@ public class PermissionDefinition :
     /// Returns the value in the <see cref="Properties"/> dictionary by given <paramref name="name"/>.
     /// Returns null if given <paramref name="name"/> is not present in the <see cref="Properties"/> dictionary.
     /// </returns>
-    public object this[string name] {
+    public object? this[string name] {
         get => Properties.GetOrDefault(name);
         set => Properties[name] = value;
     }
 
     protected internal PermissionDefinition(
         [NotNull] string name,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
         MultiTenancySides multiTenancySide = MultiTenancySides.Both,
         bool isEnabled = true)
     {
@@ -87,7 +87,7 @@ public class PermissionDefinition :
         MultiTenancySide = multiTenancySide;
         IsEnabled = isEnabled;
 
-        Properties = new Dictionary<string, object>();
+        Properties = new Dictionary<string, object?>();
         Providers = new List<string>();
         StateCheckers = new List<ISimpleStateChecker<PermissionDefinition>>();
         _children = new List<PermissionDefinition>();
@@ -95,7 +95,7 @@ public class PermissionDefinition :
 
     public virtual PermissionDefinition AddChild(
         [NotNull] string name,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
         MultiTenancySides multiTenancySide = MultiTenancySides.Both,
         bool isEnabled = true)
     {
@@ -115,7 +115,7 @@ public class PermissionDefinition :
     
     PermissionDefinition ICanAddChildPermission.AddPermission(
         string name,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
         MultiTenancySides multiTenancySide = MultiTenancySides.Both,
         bool isEnabled = true)
     {

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/PermissionDefinitionContext.cs

@@ -20,7 +20,7 @@ public class PermissionDefinitionContext : IPermissionDefinitionContext
 
     public virtual PermissionGroupDefinition AddGroup(
         string name,
-        ILocalizableString displayName = null)
+        ILocalizableString? displayName = null)
     {
         Check.NotNull(name, nameof(name));
 
@@ -45,7 +45,7 @@ public class PermissionDefinitionContext : IPermissionDefinitionContext
         return group;
     }
 
-    public virtual PermissionGroupDefinition GetGroupOrNull([NotNull] string name)
+    public virtual PermissionGroupDefinition? GetGroupOrNull([NotNull] string name)
     {
         Check.NotNull(name, nameof(name));
 
@@ -69,7 +69,7 @@ public class PermissionDefinitionContext : IPermissionDefinitionContext
         Groups.Remove(name);
     }
 
-    public virtual PermissionDefinition GetPermissionOrNull([NotNull] string name)
+    public virtual PermissionDefinition? GetPermissionOrNull([NotNull] string name)
     {
         Check.NotNull(name, nameof(name));
 

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/PermissionGrantInfo.cs

@@ -8,11 +8,11 @@ public class PermissionGrantInfo
 
     public bool IsGranted { get; }
 
-    public string ProviderName { get; }
+    public string? ProviderName { get; }
 
-    public string ProviderKey { get; }
+    public string? ProviderKey { get; }
 
-    public PermissionGrantInfo([NotNull] string name, bool isGranted, [CanBeNull] string providerName = null, [CanBeNull] string providerKey = null)
+    public PermissionGrantInfo([NotNull] string name, bool isGranted, string? providerName = null, string? providerKey = null)
     {
         Check.NotNull(name, nameof(name));
 

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/PermissionGroupDefinition.cs

@@ -13,13 +13,13 @@ public class PermissionGroupDefinition : ICanAddChildPermission
     /// </summary>
     public string Name { get; }
 
-    public Dictionary<string, object> Properties { get; }
+    public Dictionary<string, object?> Properties { get; }
 
     public ILocalizableString DisplayName {
         get => _displayName;
         set => _displayName = Check.NotNull(value, nameof(value));
     }
-    private ILocalizableString _displayName;
+    private ILocalizableString _displayName = default!;
 
     public IReadOnlyList<PermissionDefinition> Permissions => _permissions.ToImmutableList();
     private readonly List<PermissionDefinition> _permissions;
@@ -32,25 +32,25 @@ public class PermissionGroupDefinition : ICanAddChildPermission
     /// Returns the value in the <see cref="Properties"/> dictionary by given <paramref name="name"/>.
     /// Returns null if given <paramref name="name"/> is not present in the <see cref="Properties"/> dictionary.
     /// </returns>
-    public object this[string name] {
+    public object? this[string name] {
         get => Properties.GetOrDefault(name);
         set => Properties[name] = value;
     }
 
     protected internal PermissionGroupDefinition(
         string name,
-        ILocalizableString displayName = null)
+        ILocalizableString? displayName = null)
     {
         Name = name;
         DisplayName = displayName ?? new FixedLocalizableString(Name);
 
-        Properties = new Dictionary<string, object>();
+        Properties = new Dictionary<string, object?>();
         _permissions = new List<PermissionDefinition>();
     }
 
     public virtual PermissionDefinition AddPermission(
         [NotNull] string name,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
         MultiTenancySides multiTenancySide = MultiTenancySides.Both,
         bool isEnabled = true)
     {
@@ -93,15 +93,14 @@ public class PermissionGroupDefinition : ICanAddChildPermission
         return $"[{nameof(PermissionGroupDefinition)} {Name}]";
     }
 
-    [CanBeNull]
+    public PermissionDefinition? GetPermissionOrNull([NotNull] string name)
-    public PermissionDefinition GetPermissionOrNull([NotNull] string name)
     {
         Check.NotNull(name, nameof(name));
 
         return GetPermissionOrNullRecursively(Permissions, name);
     }
 
-    private PermissionDefinition GetPermissionOrNullRecursively(
+    private PermissionDefinition? GetPermissionOrNullRecursively(
         IReadOnlyList<PermissionDefinition> permissions, string name)
     {
         foreach (var permission in permissions)

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/PermissionStateContext.cs

@@ -4,7 +4,7 @@ namespace Volo.Abp.Authorization.Permissions;
 
 public class PermissionStateContext
 {
-    public IServiceProvider ServiceProvider { get; set; }
+    public IServiceProvider ServiceProvider { get; set; } = default!;
 
-    public PermissionDefinition Permission { get; set; }
+    public PermissionDefinition Permission { get; set; } = default!;
 }

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/PermissionValueCheckContext.cs

@@ -8,12 +8,11 @@ public class PermissionValueCheckContext
     [NotNull]
     public PermissionDefinition Permission { get; }
 
-    [CanBeNull]
+    public ClaimsPrincipal? Principal { get; }
-    public ClaimsPrincipal Principal { get; }
 
     public PermissionValueCheckContext(
         [NotNull] PermissionDefinition permission,
-        [CanBeNull] ClaimsPrincipal principal)
+        ClaimsPrincipal? principal)
     {
         Check.NotNull(permission, nameof(permission));
 

framework/src/Volo.Abp.Authorization.Abstractions/Volo/Abp/Authorization/Permissions/PermissionValuesCheckContext.cs

@@ -9,12 +9,11 @@ public class PermissionValuesCheckContext
     [NotNull]
     public List<PermissionDefinition> Permissions { get; }
 
-    [CanBeNull]
+    public ClaimsPrincipal? Principal { get; }
-    public ClaimsPrincipal Principal { get; }
 
     public PermissionValuesCheckContext(
         [NotNull] List<PermissionDefinition> permissions,
-        [CanBeNull] ClaimsPrincipal principal)
+        ClaimsPrincipal? principal)
     {
         Check.NotNull(permissions, nameof(permissions));
 

framework/src/Volo.Abp.Authorization/Microsoft/AspNetCore/Authorization/AbpAuthorizationServiceExtensions.cs

@@ -25,7 +25,7 @@ public static class AbpAuthorizationServiceExtensions
         );
     }
 
-    public static async Task<AuthorizationResult> AuthorizeAsync(this IAuthorizationService authorizationService, object resource, AuthorizationPolicy policy)
+    public static async Task<AuthorizationResult> AuthorizeAsync(this IAuthorizationService authorizationService, object? resource, AuthorizationPolicy policy)
     {
         return await authorizationService.AuthorizeAsync(
             authorizationService.AsAbpAuthorizationService().CurrentPrincipal,
@@ -52,7 +52,7 @@ public static class AbpAuthorizationServiceExtensions
         );
     }
 
-    public static async Task<AuthorizationResult> AuthorizeAsync(this IAuthorizationService authorizationService, object resource, string policyName)
+    public static async Task<AuthorizationResult> AuthorizeAsync(this IAuthorizationService authorizationService, object? resource, string policyName)
     {
         return await authorizationService.AuthorizeAsync(
             authorizationService.AsAbpAuthorizationService().CurrentPrincipal,

framework/src/Volo.Abp.Authorization/Microsoft/AspNetCore/Authorization/AuthorizationOptionsExtensions.cs

@@ -7,7 +7,7 @@ namespace Microsoft.AspNetCore.Authorization;
 public static class AuthorizationOptionsExtensions
 {
     private static readonly PropertyInfo PolicyMapProperty = typeof(AuthorizationOptions)
-        .GetProperty("PolicyMap", BindingFlags.Instance | BindingFlags.NonPublic);
+        .GetProperty("PolicyMap", BindingFlags.Instance | BindingFlags.NonPublic)!;
 
     /// <summary>
     /// Gets all policies.
@@ -20,6 +20,6 @@ public static class AuthorizationOptionsExtensions
     /// <returns></returns>
     public static List<string> GetPoliciesNames(this AuthorizationOptions options)
     {
-        return ((IDictionary<string, AuthorizationPolicy>)PolicyMapProperty.GetValue(options)).Keys.ToList();
+        return ((IDictionary<string, AuthorizationPolicy>)PolicyMapProperty.GetValue(options)!).Keys.ToList();
     }
 }

framework/src/Volo.Abp.Authorization/Volo.Abp.Authorization.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.Authorization</AssemblyName>
     <PackageId>Volo.Abp.Authorization</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/AbpAuthorizationPolicyProvider.cs

@@ -23,7 +23,7 @@ public class AbpAuthorizationPolicyProvider : DefaultAuthorizationPolicyProvider
         _options = options.Value;
     }
 
-    public override async Task<AuthorizationPolicy> GetPolicyAsync(string policyName)
+    public override async Task<AuthorizationPolicy?> GetPolicyAsync(string policyName)
     {
         var policy = await base.GetPolicyAsync(policyName);
         if (policy != null)

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/AuthenticatedSimpleStateCheckerSerializerContributor.cs

@@ -10,7 +10,7 @@ public class AuthenticatedSimpleStateCheckerSerializerContributor :
 {
     public const string CheckerShortName = "A";
     
-    public string SerializeToJson<TState>(ISimpleStateChecker<TState> checker) 
+    public string? SerializeToJson<TState>(ISimpleStateChecker<TState> checker) 
         where TState : IHasSimpleStateCheckers<TState>
     {
         if (checker is not RequireAuthenticatedSimpleStateChecker<TState>)
@@ -25,7 +25,7 @@ public class AuthenticatedSimpleStateCheckerSerializerContributor :
         return jsonObject.ToJsonString();
     }
 
-    public ISimpleStateChecker<TState> Deserialize<TState>(JsonObject jsonObject, TState state)
+    public ISimpleStateChecker<TState>? Deserialize<TState>(JsonObject jsonObject, TState state)
         where TState : IHasSimpleStateCheckers<TState>
     {
         if (jsonObject["T"]?.ToString() != CheckerShortName)

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/IDynamicPermissionDefinitionStore.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.Authorization.Permissions;
 
 public interface IDynamicPermissionDefinitionStore
 {
-    Task<PermissionDefinition> GetOrNullAsync(string name);
+    Task<PermissionDefinition?> GetOrNullAsync(string name);
 
     Task<IReadOnlyList<PermissionDefinition>> GetPermissionsAsync();
     

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/IStaticPermissionDefinitionStore.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.Authorization.Permissions;
 
 public interface IStaticPermissionDefinitionStore
 {
-    Task<PermissionDefinition> GetOrNullAsync(string name);
+    Task<PermissionDefinition?> GetOrNullAsync(string name);
 
     Task<IReadOnlyList<PermissionDefinition>> GetPermissionsAsync();
     

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/NullDynamicPermissionDefinitionStore.cs

@@ -8,7 +8,7 @@ namespace Volo.Abp.Authorization.Permissions;
 
 public class NullDynamicPermissionDefinitionStore : IDynamicPermissionDefinitionStore, ISingletonDependency
 {
-    private readonly static Task<PermissionDefinition> CachedPermissionResult = Task.FromResult((PermissionDefinition)null);
+    private readonly static Task<PermissionDefinition?> CachedPermissionResult = Task.FromResult((PermissionDefinition?)null);
     
     private readonly static Task<IReadOnlyList<PermissionDefinition>> CachedPermissionsResult =
         Task.FromResult((IReadOnlyList<PermissionDefinition>)Array.Empty<PermissionDefinition>().ToImmutableList());
@@ -16,7 +16,7 @@ public class NullDynamicPermissionDefinitionStore : IDynamicPermissionDefinition
     private readonly static Task<IReadOnlyList<PermissionGroupDefinition>> CachedGroupsResult =
         Task.FromResult((IReadOnlyList<PermissionGroupDefinition>)Array.Empty<PermissionGroupDefinition>().ToImmutableList());
 
-    public Task<PermissionDefinition> GetOrNullAsync(string name)
+    public Task<PermissionDefinition?> GetOrNullAsync(string name)
     {
         return CachedPermissionResult;
     }

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionChecker.cs

@@ -38,7 +38,7 @@ public class PermissionChecker : IPermissionChecker, ITransientDependency
     }
 
     public virtual async Task<bool> IsGrantedAsync(
-        ClaimsPrincipal claimsPrincipal,
+        ClaimsPrincipal? claimsPrincipal,
         string name)
     {
         Check.NotNull(name, nameof(name));
@@ -97,7 +97,7 @@ public class PermissionChecker : IPermissionChecker, ITransientDependency
         return await IsGrantedAsync(PrincipalAccessor.Principal, names);
     }
 
-    public async Task<MultiplePermissionGrantResult> IsGrantedAsync(ClaimsPrincipal claimsPrincipal, string[] names)
+    public async Task<MultiplePermissionGrantResult> IsGrantedAsync(ClaimsPrincipal? claimsPrincipal, string[] names)
     {
         Check.NotNull(names, nameof(names));
 

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinitionManager.cs

@@ -30,7 +30,7 @@ public class PermissionDefinitionManager : IPermissionDefinitionManager, ITransi
         return permission;
     }
 
-    public virtual async Task<PermissionDefinition> GetOrNullAsync(string name)
+    public virtual async Task<PermissionDefinition?> GetOrNullAsync(string name)
     {
         Check.NotNull(name, nameof(name));
 

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionValueProviderManager.cs

@@ -24,7 +24,7 @@ public class PermissionValueProviderManager : IPermissionValueProviderManager, I
             () => Options
                 .ValueProviders
                 .Select(c => serviceProvider.GetRequiredService(c) as IPermissionValueProvider)
-                .ToList(),
+                .ToList()!,
             true
         );
     }

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionsSimpleStateCheckerSerializerContributor.cs

@@ -12,7 +12,7 @@ public class PermissionsSimpleStateCheckerSerializerContributor :
 {
     public const string CheckerShortName = "P";
 
-    public string SerializeToJson<TState>(ISimpleStateChecker<TState> checker)
+    public string? SerializeToJson<TState>(ISimpleStateChecker<TState> checker)
         where TState : IHasSimpleStateCheckers<TState>
     {
         if (checker is not RequirePermissionsSimpleStateChecker<TState> permissionsSimpleStateChecker)
@@ -35,7 +35,7 @@ public class PermissionsSimpleStateCheckerSerializerContributor :
         return jsonObject.ToJsonString();
     }
 
-    public ISimpleStateChecker<TState> Deserialize<TState>(
+    public ISimpleStateChecker<TState>? Deserialize<TState>(
         JsonObject jsonObject,
         TState state)
         where TState : IHasSimpleStateCheckers<TState>
@@ -54,7 +54,7 @@ public class PermissionsSimpleStateCheckerSerializerContributor :
         return new RequirePermissionsSimpleStateChecker<TState>(
             new RequirePermissionsSimpleBatchStateCheckerModel<TState>(
                 state,
-                nameArray.Select(x => x.ToString()).ToArray(),
+                nameArray.Select(x => x!.ToString()).ToArray(),
                 (bool?)jsonObject["A"] ?? false
             )
         );

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/RequirePermissionsSimpleBatchStateChecker.cs

@@ -11,7 +11,7 @@ namespace Volo.Abp.Authorization.Permissions;
 public class RequirePermissionsSimpleBatchStateChecker<TState> : SimpleBatchStateCheckerBase<TState>
     where TState : IHasSimpleStateCheckers<TState>
 {
-    public static RequirePermissionsSimpleBatchStateChecker<TState> Current => _current.Value;
+    public static RequirePermissionsSimpleBatchStateChecker<TState> Current => _current.Value!;
     private static readonly AsyncLocal<RequirePermissionsSimpleBatchStateChecker<TState>> _current = new AsyncLocal<RequirePermissionsSimpleBatchStateChecker<TState>>();
 
     private readonly List<RequirePermissionsSimpleBatchStateCheckerModel<TState>> _models;

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/StaticPermissionDefinitionStore.cs

@@ -79,7 +79,7 @@ public class StaticPermissionDefinitionStore : IStaticPermissionDefinitionStore,
 
             var providers = Options
                 .DefinitionProviders
-                .Select(p => scope.ServiceProvider.GetRequiredService(p) as IPermissionDefinitionProvider)
+                .Select(p => (scope.ServiceProvider.GetRequiredService(p) as IPermissionDefinitionProvider)!)
                 .ToList();
 
             foreach (var provider in providers)
@@ -101,7 +101,7 @@ public class StaticPermissionDefinitionStore : IStaticPermissionDefinitionStore,
         }
     }
 
-    public Task<PermissionDefinition> GetOrNullAsync(string name)
+    public Task<PermissionDefinition?> GetOrNullAsync(string name)
     {
         return Task.FromResult(PermissionDefinitions.GetOrDefault(name));
     }

framework/src/Volo.Abp.AutoMapper/AutoMapper/AbpAutoMapperExtensibleDtoExtensions.cs

@@ -10,7 +10,7 @@ public static class AbpAutoMapperExtensibleDtoExtensions
     public static IMappingExpression<TSource, TDestination> MapExtraProperties<TSource, TDestination>(
         this IMappingExpression<TSource, TDestination> mappingExpression,
         MappingPropertyDefinitionChecks? definitionChecks = null,
-        string[] ignoredProperties = null,
+        string[]? ignoredProperties = null,
         bool mapToRegularProperties = false)
         where TDestination : IHasExtraProperties
         where TSource : IHasExtraProperties

framework/src/Volo.Abp.AutoMapper/Volo.Abp.AutoMapper.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.1</TargetFramework>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.AutoMapper</AssemblyName>
     <PackageId>Volo.Abp.AutoMapper</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.AutoMapper/Volo/Abp/AutoMapper/MapperAccessor.cs

@@ -4,5 +4,5 @@ namespace Volo.Abp.AutoMapper;
 
 internal class MapperAccessor : IMapperAccessor
 {
-    public IMapper Mapper { get; set; }
+    public IMapper Mapper { get; set; } = default!;
 }

framework/src/Volo.Abp.Cli/Volo.Abp.Cli.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <TargetFramework>net7.0</TargetFramework>
     <PackAsTool>true</PackAsTool>
     <ToolCommandName>abp</ToolCommandName>

framework/src/Volo.Abp.Emailing/Volo.Abp.Emailing.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.Emailing</AssemblyName>
     <PackageId>Volo.Abp.Emailing</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/BackgroundEmailSendingJob.cs

@@ -23,7 +23,7 @@ public class BackgroundEmailSendingJob : AsyncBackgroundJob<BackgroundEmailSendi
         }
         else
         {
-            await EmailSender.SendAsync(args.From, args.To, args.Subject, args.Body, args.IsBodyHtml);
+            await EmailSender.SendAsync(args.From!, args.To, args.Subject, args.Body, args.IsBodyHtml);
         }
     }
 }

framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/BackgroundEmailSendingJobArgs.cs

@@ -5,13 +5,13 @@ namespace Volo.Abp.Emailing;
 [Serializable]
 public class BackgroundEmailSendingJobArgs
 {
-    public string From { get; set; }
+    public string? From { get; set; }
 
-    public string To { get; set; }
+    public string To { get; set; } = default!;
 
-    public string Subject { get; set; }
+    public string? Subject { get; set; }
 
-    public string Body { get; set; }
+    public string? Body { get; set; }
 
     /// <summary>
     /// Default: true.

framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/EmailSenderBase.cs

@@ -24,7 +24,7 @@ public abstract class EmailSenderBase : IEmailSender
         BackgroundJobManager = backgroundJobManager;
     }
 
-    public virtual async Task SendAsync(string to, string subject, string body, bool isBodyHtml = true)
+    public virtual async Task SendAsync(string to, string? subject, string? body, bool isBodyHtml = true)
     {
         await SendAsync(new MailMessage
         {
@@ -35,7 +35,7 @@ public abstract class EmailSenderBase : IEmailSender
         });
     }
 
-    public virtual async Task SendAsync(string from, string to, string subject, string body, bool isBodyHtml = true)
+    public virtual async Task SendAsync(string from, string to, string? subject, string? body, bool isBodyHtml = true)
     {
         await SendAsync(new MailMessage(from, to, subject, body) { IsBodyHtml = isBodyHtml });
     }

framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/EmailSenderConfiguration.cs

@@ -44,6 +44,6 @@ public abstract class EmailSenderConfiguration : IEmailSenderConfiguration
             throw new AbpException($"Setting value for '{name}' is null or empty!");
         }
 
-        return value;
+        return value!;
     }
 }

framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/IEmailSender.cs

@@ -13,8 +13,8 @@ public interface IEmailSender
     /// </summary>
     Task SendAsync(
         string to,
-        string subject,
+        string? subject,
-        string body,
+        string? body,
         bool isBodyHtml = true
     );
 
@@ -24,8 +24,8 @@ public interface IEmailSender
     Task SendAsync(
         string from,
         string to,
-        string subject,
+        string? subject,
-        string body,
+        string? body,
         bool isBodyHtml = true
     );
 

framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/Smtp/ISmtpEmailSenderConfiguration.cs

@@ -30,7 +30,7 @@ public interface ISmtpEmailSenderConfiguration : IEmailSenderConfiguration
     /// <summary>
     /// Domain name to login to SMTP server.
     /// </summary>
-    Task<string> GetDomainAsync();
+    Task<string?> GetDomainAsync();
 
     /// <summary>
     /// Is SSL enabled?

framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/Smtp/SmtpEmailSenderConfiguration.cs

@@ -37,7 +37,7 @@ public class SmtpEmailSenderConfiguration : EmailSenderConfiguration, ISmtpEmail
         return GetNotEmptySettingValueAsync(EmailSettingNames.Smtp.Password);
     }
 
-    public Task<string> GetDomainAsync()
+    public Task<string?> GetDomainAsync()
     {
         return SettingProvider.GetOrNullAsync(EmailSettingNames.Smtp.Domain);
     }

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/EntityHistory/EntityHistoryHelper.cs

@@ -177,10 +177,10 @@ public class EntityHistoryHelper : IEntityHistoryHelper, ITransientDependency
             {
                 propertyChanges.Add(new EntityPropertyChangeInfo
                 {
-                    NewValue = isDeleted ? null : JsonSerializer.Serialize(propertyEntry.CurrentValue).TruncateWithPostfix(EntityPropertyChangeInfo.MaxValueLength),
+                    NewValue = isDeleted ? null : JsonSerializer.Serialize(propertyEntry.CurrentValue!).TruncateWithPostfix(EntityPropertyChangeInfo.MaxValueLength),
-                    OriginalValue = isCreated ? null : JsonSerializer.Serialize(propertyEntry.OriginalValue).TruncateWithPostfix(EntityPropertyChangeInfo.MaxValueLength),
+                    OriginalValue = isCreated ? null : JsonSerializer.Serialize(propertyEntry.OriginalValue!).TruncateWithPostfix(EntityPropertyChangeInfo.MaxValueLength),
                     PropertyName = property.Name,
-                    PropertyTypeFullName = property.ClrType.GetFirstGenericArgumentIfNullable().FullName
+                    PropertyTypeFullName = property.ClrType.GetFirstGenericArgumentIfNullable().FullName!
                 });
             }
         }

framework/src/Volo.Abp.Features/Volo.Abp.Features.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.Features</AssemblyName>
     <PackageId>Volo.Abp.Features</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.Features/Volo/Abp/Features/DefaultValueFeatureValueProvider.cs

@@ -14,8 +14,8 @@ public class DefaultValueFeatureValueProvider : FeatureValueProvider //TODO: Dir
 
     }
 
-    public override Task<string> GetOrNullAsync(FeatureDefinition setting)
+    public override Task<string?> GetOrNullAsync(FeatureDefinition setting)
     {
-        return Task.FromResult(setting.DefaultValue);
+        return Task.FromResult<string?>(setting.DefaultValue);
     }
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/EditionFeatureValueProvider.cs

@@ -18,7 +18,7 @@ public class EditionFeatureValueProvider : FeatureValueProvider
         PrincipalAccessor = principalAccessor;
     }
 
-    public override async Task<string> GetOrNullAsync(FeatureDefinition feature)
+    public override async Task<string?> GetOrNullAsync(FeatureDefinition feature)
     {
         var editionId = PrincipalAccessor.Principal?.FindEditionId();
         if (editionId == null)

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureChecker.cs

@@ -29,13 +29,13 @@ public class FeatureChecker : FeatureCheckerBase
         _providers = new Lazy<List<IFeatureValueProvider>>(
             () => Options
                 .ValueProviders
-                .Select(type => ServiceProvider.GetRequiredService(type) as IFeatureValueProvider)
+                .Select(type => (ServiceProvider.GetRequiredService(type) as IFeatureValueProvider)!)
                 .ToList(),
             true
         );
     }
 
-    public override async Task<string> GetOrNullAsync(string name)
+    public override async Task<string?> GetOrNullAsync(string name)
     {
         var featureDefinition = await FeatureDefinitionManager.GetAsync(name);
         var providers = Enumerable
@@ -49,7 +49,7 @@ public class FeatureChecker : FeatureCheckerBase
         return await GetOrNullValueFromProvidersAsync(providers, featureDefinition);
     }
 
-    protected virtual async Task<string> GetOrNullValueFromProvidersAsync(
+    protected virtual async Task<string?> GetOrNullValueFromProvidersAsync(
         IEnumerable<IFeatureValueProvider> providers,
         FeatureDefinition feature)
     {

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureCheckerBase.cs

@@ -6,7 +6,7 @@ namespace Volo.Abp.Features;
 
 public abstract class FeatureCheckerBase : IFeatureChecker, ITransientDependency
 {
-    public abstract Task<string> GetOrNullAsync(string name);
+    public abstract Task<string?> GetOrNullAsync(string name);
 
     public virtual async Task<bool> IsEnabledAsync(string name)
     {
@@ -18,7 +18,7 @@ public abstract class FeatureCheckerBase : IFeatureChecker, ITransientDependency
 
         try
         {
-            return bool.Parse(value);
+            return bool.Parse(value!);
         }
         catch (Exception ex)
         {

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureDefinition.cs

@@ -20,17 +20,15 @@ public class FeatureDefinition : ICanCreateChildFeature
         get => _displayName;
         set => _displayName = Check.NotNull(value, nameof(value));
     }
-    private ILocalizableString _displayName;
+    private ILocalizableString _displayName = default!;
 
-    [CanBeNull]
+    public ILocalizableString? Description { get; set; }
-    public ILocalizableString Description { get; set; }
 
     /// <summary>
     /// Parent of this feature, if one exists.
     /// If set, this feature can be enabled only if the parent is enabled.
     /// </summary>
-    [CanBeNull]
+    public FeatureDefinition? Parent { get; private set; }
-    public FeatureDefinition Parent { get; private set; }
 
     /// <summary>
     /// List of child features.
@@ -41,8 +39,7 @@ public class FeatureDefinition : ICanCreateChildFeature
     /// <summary>
     /// Default value of the feature.
     /// </summary>
-    [CanBeNull]
+    public string? DefaultValue { get; set; }
-    public string DefaultValue { get; set; }
 
     /// <summary>
     /// Can clients see this feature and it's value.
@@ -71,8 +68,7 @@ public class FeatureDefinition : ICanCreateChildFeature
     /// Returns the value in the <see cref="Properties"/> dictionary by given <paramref name="name"/>.
     /// Returns null if given <paramref name="name"/> is not present in the <see cref="Properties"/> dictionary.
     /// </returns>
-    [CanBeNull]
+    public object? this[string name] {
-    public object this[string name] {
         get => Properties.GetOrDefault(name);
         set => Properties[name] = value;
     }
@@ -81,22 +77,21 @@ public class FeatureDefinition : ICanCreateChildFeature
     /// Can be used to get/set custom properties for this feature.
     /// </summary>
     [NotNull]
-    public Dictionary<string, object> Properties { get; }
+    public Dictionary<string, object?> Properties { get; }
 
     /// <summary>
     /// Input type.
     /// This can be used to prepare an input for changing this feature's value.
     /// Default: <see cref="ToggleStringValueType"/>.
     /// </summary>
-    [CanBeNull]
+    public IStringValueType? ValueType { get; set; }
-    public IStringValueType ValueType { get; set; }
 
     public FeatureDefinition(
         string name,
-        string defaultValue = null,
+        string? defaultValue = null,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
-        ILocalizableString description = null,
+        ILocalizableString? description = null,
-        IStringValueType valueType = null,
+        IStringValueType? valueType = null,
         bool isVisibleToClients = true,
         bool isAvailableToHost = true)
     {
@@ -108,7 +103,7 @@ public class FeatureDefinition : ICanCreateChildFeature
         IsVisibleToClients = isVisibleToClients;
         IsAvailableToHost = isAvailableToHost;
 
-        Properties = new Dictionary<string, object>();
+        Properties = new Dictionary<string, object?>();
         AllowedProviders = new List<string>();
         _children = new List<FeatureDefinition>();
     }
@@ -143,10 +138,10 @@ public class FeatureDefinition : ICanCreateChildFeature
     /// <returns>Returns a newly created child feature</returns>
     public FeatureDefinition CreateChild(
         string name,
-        string defaultValue = null,
+        string? defaultValue = null,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
-        ILocalizableString description = null,
+        ILocalizableString? description = null,
-        IStringValueType valueType = null,
+        IStringValueType? valueType = null,
         bool isVisibleToClients = true,
         bool isAvailableToHost = true)
     {
@@ -179,10 +174,10 @@ public class FeatureDefinition : ICanCreateChildFeature
     }
 
     public FeatureDefinition CreateChildFeature(string name,
-        string defaultValue = null,
+        string? defaultValue = null,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
-        ILocalizableString description = null,
+        ILocalizableString? description = null,
-        IStringValueType valueType = null,
+        IStringValueType? valueType = null,
         bool isVisibleToClients = true,
         bool isAvailableToHost = true)
     {

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureDefinitionContext.cs

@@ -12,7 +12,7 @@ public class FeatureDefinitionContext : IFeatureDefinitionContext
         Groups = new Dictionary<string, FeatureGroupDefinition>();
     }
 
-    public FeatureGroupDefinition AddGroup(string name, ILocalizableString displayName = null)
+    public FeatureGroupDefinition AddGroup(string name, ILocalizableString? displayName = null)
     {
         Check.NotNull(name, nameof(name));
 
@@ -24,7 +24,7 @@ public class FeatureDefinitionContext : IFeatureDefinitionContext
         return Groups[name] = new FeatureGroupDefinition(name, displayName);
     }
 
-    public FeatureGroupDefinition GetGroupOrNull(string name)
+    public FeatureGroupDefinition? GetGroupOrNull(string name)
     {
         Check.NotNull(name, nameof(name));
 

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureDefinitionManager.cs

@@ -31,7 +31,7 @@ public class FeatureDefinitionManager : IFeatureDefinitionManager, ISingletonDep
         return permission;
     }
 
-    public virtual async Task<FeatureDefinition> GetOrNullAsync(string name)
+    public virtual async Task<FeatureDefinition?> GetOrNullAsync(string name)
     {
         Check.NotNull(name, nameof(name));
 

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureGroupDefinition.cs

@@ -12,13 +12,13 @@ public class FeatureGroupDefinition : ICanCreateChildFeature
     /// </summary>
     public string Name { get; }
 
-    public Dictionary<string, object> Properties { get; }
+    public Dictionary<string, object?> Properties { get; }
 
     public ILocalizableString DisplayName {
         get => _displayName;
         set => _displayName = Check.NotNull(value, nameof(value));
     }
-    private ILocalizableString _displayName;
+    private ILocalizableString _displayName = default!;
 
     public IReadOnlyList<FeatureDefinition> Features => _features.ToImmutableList();
     private readonly List<FeatureDefinition> _features;
@@ -31,28 +31,28 @@ public class FeatureGroupDefinition : ICanCreateChildFeature
     /// Returns the value in the <see cref="Properties"/> dictionary by given <paramref name="name"/>.
     /// Returns null if given <paramref name="name"/> is not present in the <see cref="Properties"/> dictionary.
     /// </returns>
-    public object this[string name] {
+    public object? this[string name] {
         get => Properties.GetOrDefault(name);
         set => Properties[name] = value;
     }
 
     protected internal FeatureGroupDefinition(
         string name,
-        ILocalizableString displayName = null)
+        ILocalizableString? displayName = null)
     {
         Name = name;
         DisplayName = displayName ?? new FixedLocalizableString(Name);
 
-        Properties = new Dictionary<string, object>();
+        Properties = new Dictionary<string, object?>();
         _features = new List<FeatureDefinition>();
     }
 
     public virtual FeatureDefinition AddFeature(
         string name,
-        string defaultValue = null,
+        string? defaultValue = null,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
-        ILocalizableString description = null,
+        ILocalizableString? description = null,
-        IStringValueType valueType = null,
+        IStringValueType? valueType = null,
         bool isVisibleToClients = true,
         bool isAvailableToHost = true)
     {
@@ -72,10 +72,10 @@ public class FeatureGroupDefinition : ICanCreateChildFeature
     }
 
     public FeatureDefinition CreateChildFeature(string name,
-        string defaultValue = null,
+        string? defaultValue = null,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
-        ILocalizableString description = null,
+        ILocalizableString? description = null,
-        IStringValueType valueType = null,
+        IStringValueType? valueType = null,
         bool isVisibleToClients = true,
         bool isAvailableToHost = true)
     {

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeatureValueProvider.cs

@@ -14,5 +14,5 @@ public abstract class FeatureValueProvider : IFeatureValueProvider, ITransientDe
         FeatureStore = featureStore;
     }
 
-    public abstract Task<string> GetOrNullAsync(FeatureDefinition feature);
+    public abstract Task<string?> GetOrNullAsync(FeatureDefinition feature);
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/FeaturesSimpleStateCheckerSerializerContributor.cs

@@ -11,7 +11,7 @@ public class FeaturesSimpleStateCheckerSerializerContributor :
 {
     public const string CheckerShortName = "F";
     
-    public string SerializeToJson<TState>(ISimpleStateChecker<TState> checker)
+    public string? SerializeToJson<TState>(ISimpleStateChecker<TState> checker)
         where TState : IHasSimpleStateCheckers<TState>
     {
         if (checker is not RequireFeaturesSimpleStateChecker<TState> featuresSimpleStateChecker)
@@ -34,7 +34,7 @@ public class FeaturesSimpleStateCheckerSerializerContributor :
         return jsonObject.ToJsonString();
     }
 
-    public ISimpleStateChecker<TState> Deserialize<TState>(JsonObject jsonObject, TState state)
+    public ISimpleStateChecker<TState>? Deserialize<TState>(JsonObject jsonObject, TState state)
         where TState : IHasSimpleStateCheckers<TState>
     {
         if (jsonObject["T"]?.ToString() != CheckerShortName)
@@ -50,7 +50,7 @@ public class FeaturesSimpleStateCheckerSerializerContributor :
 
         return new RequireFeaturesSimpleStateChecker<TState>(
             (bool?)jsonObject["A"] ?? false,
-            nameArray.Select(x => x.ToString()).ToArray()
+            nameArray.Select(x => x!.ToString()).ToArray()
         );
     }
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/ICanCreateChildFeature.cs

@@ -7,10 +7,10 @@ public interface ICanCreateChildFeature
 {
     FeatureDefinition CreateChildFeature(
         string name,
-        string defaultValue = null,
+        string? defaultValue = null,
-        ILocalizableString displayName = null,
+        ILocalizableString? displayName = null,
-        ILocalizableString description = null,
+        ILocalizableString? description = null,
-        IStringValueType valueType = null,
+        IStringValueType? valueType = null,
         bool isVisibleToClients = true,
         bool isAvailableToHost = true);
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/IDynamicFeatureDefinitionStore.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.Features;
 
 public interface IDynamicFeatureDefinitionStore
 {
-    Task<FeatureDefinition> GetOrNullAsync(string name);
+    Task<FeatureDefinition?> GetOrNullAsync(string name);
 
     Task<IReadOnlyList<FeatureDefinition>> GetFeaturesAsync();
 

framework/src/Volo.Abp.Features/Volo/Abp/Features/IFeatureChecker.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.Features;
 
 public interface IFeatureChecker
 {
-    Task<string> GetOrNullAsync([NotNull] string name);
+    Task<string?> GetOrNullAsync([NotNull] string name);
 
     Task<bool> IsEnabledAsync(string name);
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/IFeatureDefinitionContext.cs

@@ -5,9 +5,9 @@ namespace Volo.Abp.Features;
 
 public interface IFeatureDefinitionContext
 {
-    FeatureGroupDefinition AddGroup([NotNull] string name, ILocalizableString displayName = null);
+    FeatureGroupDefinition AddGroup([NotNull] string name, ILocalizableString? displayName = null);
 
-    FeatureGroupDefinition GetGroupOrNull(string name);
+    FeatureGroupDefinition? GetGroupOrNull(string name);
 
     void RemoveGroup(string name);
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/IFeatureDefinitionManager.cs

@@ -11,7 +11,7 @@ public interface IFeatureDefinitionManager
 
     Task<IReadOnlyList<FeatureDefinition>> GetAllAsync();
 
-    Task<FeatureDefinition> GetOrNullAsync(string name);
+    Task<FeatureDefinition?> GetOrNullAsync(string name);
 
     Task<IReadOnlyList<FeatureGroupDefinition>> GetGroupsAsync();
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/IFeatureStore.cs

@@ -5,9 +5,9 @@ namespace Volo.Abp.Features;
 
 public interface IFeatureStore
 {
-    Task<string> GetOrNullAsync(
+    Task<string?> GetOrNullAsync(
         [NotNull] string name,
-        [CanBeNull] string providerName,
+        string? providerName,
-        [CanBeNull] string providerKey
+        string? providerKey
     );
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/IFeatureValueProvider.cs

@@ -7,5 +7,5 @@ public interface IFeatureValueProvider
 {
     string Name { get; }
 
-    Task<string> GetOrNullAsync([NotNull] FeatureDefinition feature);
+    Task<string?> GetOrNullAsync([NotNull] FeatureDefinition feature);
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/IStaticFeatureDefinitionStore.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.Features;
 
 public interface IStaticFeatureDefinitionStore
 {
-    Task<FeatureDefinition> GetOrNullAsync(string name);
+    Task<FeatureDefinition?> GetOrNullAsync(string name);
 
     Task<IReadOnlyList<FeatureDefinition>> GetFeaturesAsync();
 

framework/src/Volo.Abp.Features/Volo/Abp/Features/MethodInvocationFeatureCheckerService.cs

@@ -47,7 +47,7 @@ public class MethodInvocationFeatureCheckerService : IMethodInvocationFeatureChe
         {
             attributes = attributes
                 .Union(
-                    methodInfo.DeclaringType
+                    methodInfo.DeclaringType!
                         .GetCustomAttributes(true)
                         .OfType<RequiresFeatureAttribute>()
                 );

framework/src/Volo.Abp.Features/Volo/Abp/Features/NullDynamicFeatureDefinitionStore.cs

@@ -8,7 +8,7 @@ namespace Volo.Abp.Features;
 
 public class NullDynamicFeatureDefinitionStore : IDynamicFeatureDefinitionStore, ISingletonDependency
 {
-    private static readonly Task<FeatureDefinition> CachedFeatureResult = Task.FromResult((FeatureDefinition)null);
+    private static readonly Task<FeatureDefinition?> CachedFeatureResult = Task.FromResult((FeatureDefinition?)null);
 
     private static readonly Task<IReadOnlyList<FeatureDefinition>> CachedFeaturesResult =
         Task.FromResult((IReadOnlyList<FeatureDefinition>)Array.Empty<FeatureDefinition>().ToImmutableList());
@@ -16,7 +16,7 @@ public class NullDynamicFeatureDefinitionStore : IDynamicFeatureDefinitionStore,
     private static readonly Task<IReadOnlyList<FeatureGroupDefinition>> CachedGroupsResult =
         Task.FromResult((IReadOnlyList<FeatureGroupDefinition>)Array.Empty<FeatureGroupDefinition>().ToImmutableList());
 
-    public Task<FeatureDefinition> GetOrNullAsync(string name)
+    public Task<FeatureDefinition?> GetOrNullAsync(string name)
     {
         return CachedFeatureResult;
     }

framework/src/Volo.Abp.Features/Volo/Abp/Features/NullFeatureStore.cs

@@ -15,8 +15,8 @@ public class NullFeatureStore : IFeatureStore, ISingletonDependency
         Logger = NullLogger<NullFeatureStore>.Instance;
     }
 
-    public Task<string> GetOrNullAsync(string name, string providerName, string providerKey)
+    public Task<string?> GetOrNullAsync(string name, string? providerName, string? providerKey)
     {
-        return Task.FromResult((string)null);
+        return Task.FromResult((string?)null);
     }
 }

framework/src/Volo.Abp.Features/Volo/Abp/Features/StaticFeatureDefinitionStore.cs

@@ -92,7 +92,7 @@ public class StaticFeatureDefinitionStore: IStaticFeatureDefinitionStore, ISingl
         {
             var providers = Options
                 .DefinitionProviders
-                .Select(p => scope.ServiceProvider.GetRequiredService(p) as IFeatureDefinitionProvider)
+                .Select(p => (scope.ServiceProvider.GetRequiredService(p) as IFeatureDefinitionProvider)!)
                 .ToList();
 
             foreach (var provider in providers)
@@ -104,7 +104,7 @@ public class StaticFeatureDefinitionStore: IStaticFeatureDefinitionStore, ISingl
         return context.Groups;
     }
 
-    public virtual Task<FeatureDefinition> GetOrNullAsync(string name)
+    public virtual Task<FeatureDefinition?> GetOrNullAsync(string name)
     {
         return Task.FromResult(FeatureDefinitions.GetOrDefault(name));
     }

framework/src/Volo.Abp.Features/Volo/Abp/Features/TenantFeatureValueProvider.cs

@@ -17,7 +17,7 @@ public class TenantFeatureValueProvider : FeatureValueProvider
         CurrentTenant = currentTenant;
     }
 
-    public override async Task<string> GetOrNullAsync(FeatureDefinition feature)
+    public override async Task<string?> GetOrNullAsync(FeatureDefinition feature)
     {
         return await FeatureStore.GetOrNullAsync(feature.Name, Name, CurrentTenant.Id?.ToString());
     }

framework/src/Volo.Abp.FluentValidation/Volo.Abp.FluentValidation.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.FluentValidation</AssemblyName>
     <PackageId>Volo.Abp.FluentValidation</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.FluentValidation/Volo/Abp/FluentValidation/AbpFluentValidationConventionalRegistrar.cs

@@ -24,11 +24,11 @@ public class AbpFluentValidationConventionalRegistrar : DefaultConventionalRegis
     {
         return new List<Type>()
             {
-                typeof(IValidator<>).MakeGenericType(GetFirstGenericArgumentOrNull(type, 1))
+                typeof(IValidator<>).MakeGenericType(GetFirstGenericArgumentOrNull(type, 1)!)
             };
     }
 
-    private static Type GetFirstGenericArgumentOrNull(Type type, int depth)
+    private static Type? GetFirstGenericArgumentOrNull(Type type, int depth)
     {
         const int maxFindDepth = 8;
 
@@ -42,6 +42,6 @@ public class AbpFluentValidationConventionalRegistrar : DefaultConventionalRegis
             return type.GetGenericArguments()[0];
         }
 
-        return GetFirstGenericArgumentOrNull(type.BaseType, depth + 1);
+        return GetFirstGenericArgumentOrNull(type.BaseType!, depth + 1);
     }
 }

framework/src/Volo.Abp.FluentValidation/Volo/Abp/FluentValidation/FluentObjectValidationContributor.cs

@@ -29,7 +29,7 @@ public class FluentObjectValidationContributor : IObjectValidationContributor, I
 
         var result = await validator.ValidateAsync((IValidationContext)Activator.CreateInstance(
             typeof(ValidationContext<>).MakeGenericType(context.ValidatingObject.GetType()),
-            context.ValidatingObject));
+            context.ValidatingObject)!);
 
         if (!result.IsValid)
         {

framework/src/Volo.Abp.Gdpr.Abstractions/Volo.Abp.Gdpr.Abstractions.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
         <RootNamespace />
     </PropertyGroup>
     

framework/src/Volo.Abp.Gdpr.Abstractions/Volo/Abp/Gdpr/GdprUserDataPreparedEto.cs

@@ -7,7 +7,7 @@ public class GdprUserDataPreparedEto
 {
     public Guid RequestId { get; set; }
 
-    public string Provider { get; set; }
+    public string Provider { get; set; } = default!;
     
-    public GdprDataInfo Data { get; set; }
+    public GdprDataInfo Data { get; set; } = default!;
 }

framework/src/Volo.Abp.GlobalFeatures/Volo.Abp.GlobalFeatures.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
         <AssemblyName>Volo.Abp.GlobalFeatures</AssemblyName>
         <PackageId>Volo.Abp.GlobalFeatures</PackageId>
         <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.GlobalFeatures/Volo/Abp/GlobalFeatures/AbpGlobalFeatureNotEnabledException.cs

@@ -6,9 +6,9 @@ namespace Volo.Abp.GlobalFeatures;
 [Serializable]
 public class AbpGlobalFeatureNotEnabledException : AbpException, IHasErrorCode
 {
-    public string Code { get; }
+    public string? Code { get; }
 
-    public AbpGlobalFeatureNotEnabledException(string message = null, string code = null, Exception innerException = null)
+    public AbpGlobalFeatureNotEnabledException(string? message = null, string? code = null, Exception? innerException = null)
         : base(message, innerException)
     {
         Code = code;

framework/src/Volo.Abp.GlobalFeatures/Volo/Abp/GlobalFeatures/GlobalFeatureHelper.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.GlobalFeatures;
 
 public static class GlobalFeatureHelper
 {
-    public static bool IsGlobalFeatureEnabled(Type type, out RequiresGlobalFeatureAttribute attribute)
+    public static bool IsGlobalFeatureEnabled(Type type, out RequiresGlobalFeatureAttribute? attribute)
     {
         attribute = ReflectionHelper.GetSingleAttributeOrDefault<RequiresGlobalFeatureAttribute>(type);
         return attribute == null || GlobalFeatureManager.Instance.IsEnabled(attribute.GetFeatureName());

framework/src/Volo.Abp.GlobalFeatures/Volo/Abp/GlobalFeatures/GlobalFeatureInterceptor.cs

@@ -18,8 +18,8 @@ public class GlobalFeatureInterceptor : AbpInterceptor, ITransientDependency
         if (!GlobalFeatureHelper.IsGlobalFeatureEnabled(invocation.TargetObject.GetType(), out var attribute))
         {
             throw new AbpGlobalFeatureNotEnabledException(code: AbpGlobalFeatureErrorCodes.GlobalFeatureIsNotEnabled)
-                .WithData("ServiceName", invocation.TargetObject.GetType().FullName)
+                .WithData("ServiceName", invocation.TargetObject.GetType().FullName!)
-                .WithData("GlobalFeatureName", attribute.Name);
+                .WithData("GlobalFeatureName", attribute!.Name!);
         }
 
         await invocation.ProceedAsync();

framework/src/Volo.Abp.GlobalFeatures/Volo/Abp/GlobalFeatures/GlobalFeaturesSimpleStateCheckerSerializerContributor.cs

@@ -11,7 +11,7 @@ public class GlobalFeaturesSimpleStateCheckerSerializerContributor :
 {
     public const string CheckerShortName = "G";
 
-    public string SerializeToJson<TState>(ISimpleStateChecker<TState> checker)
+    public string? SerializeToJson<TState>(ISimpleStateChecker<TState> checker)
         where TState : IHasSimpleStateCheckers<TState>
     {
         if (checker is not RequireGlobalFeaturesSimpleStateChecker<TState> globalFeaturesSimpleStateChecker)
@@ -34,7 +34,7 @@ public class GlobalFeaturesSimpleStateCheckerSerializerContributor :
         return jsonObject.ToJsonString();
     }
 
-    public ISimpleStateChecker<TState> Deserialize<TState>(JsonObject jsonObject, TState state)
+    public ISimpleStateChecker<TState>? Deserialize<TState>(JsonObject jsonObject, TState state)
         where TState : IHasSimpleStateCheckers<TState>
     {
         if (jsonObject["T"]?.ToString() != CheckerShortName)
@@ -50,7 +50,7 @@ public class GlobalFeaturesSimpleStateCheckerSerializerContributor :
 
         return new RequireGlobalFeaturesSimpleStateChecker<TState>(
             (bool?)jsonObject["A"] ?? false,
-            nameArray.Select(x => x.ToString()).ToArray()
+            nameArray.Select(x => x!.ToString()).ToArray()
         );
     }
 }

framework/src/Volo.Abp.GlobalFeatures/Volo/Abp/GlobalFeatures/RequiresGlobalFeatureAttribute.cs

@@ -6,9 +6,9 @@ namespace Volo.Abp.GlobalFeatures;
 [AttributeUsage(AttributeTargets.Class)]
 public class RequiresGlobalFeatureAttribute : Attribute
 {
-    public Type Type { get; }
+    public Type? Type { get; }
 
-    public string Name { get; }
+    public string? Name { get; }
 
     public RequiresGlobalFeatureAttribute([NotNull] Type type)
     {
@@ -22,6 +22,6 @@ public class RequiresGlobalFeatureAttribute : Attribute
 
     public virtual string GetFeatureName()
     {
-        return Name ?? GlobalFeatureNameAttribute.GetName(Type);
+        return Name ?? GlobalFeatureNameAttribute.GetName(Type!);
     }
 }

framework/src/Volo.Abp.MailKit/Volo.Abp.MailKit.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.MailKit</AssemblyName>
     <PackageId>Volo.Abp.MailKit</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.ObjectMapping/Volo.Abp.ObjectMapping.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.ObjectMapping</AssemblyName>
     <PackageId>Volo.Abp.ObjectMapping</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>

framework/src/Volo.Abp.ObjectMapping/Volo/Abp/ObjectMapping/DefaultObjectMapper.cs

@@ -36,7 +36,7 @@ public class DefaultObjectMapper : IObjectMapper, ITransientDependency
     {
         if (source == null)
         {
-            return default;
+            return default!;
         }
 
         using (var scope = ServiceProvider.CreateScope())
@@ -60,7 +60,7 @@ public class DefaultObjectMapper : IObjectMapper, ITransientDependency
                 //TODO: Check if TDestination has a proper constructor which takes TSource
                 //TODO: Check if TDestination has an empty constructor (in this case, use MapFrom)
 
-                return (TDestination)Activator.CreateInstance(typeof(TDestination), source);
+                return (TDestination)Activator.CreateInstance(typeof(TDestination), source)!;
             }
             catch
             {
@@ -75,7 +75,7 @@ public class DefaultObjectMapper : IObjectMapper, ITransientDependency
     {
         if (source == null)
         {
-            return default;
+            return default!;
         }
 
         using (var scope = ServiceProvider.CreateScope())

framework/src/Volo.Abp.ObjectMapping/Volo/Abp/ObjectMapping/ObjectMapperExtensions.cs

@@ -5,8 +5,8 @@ namespace Volo.Abp.ObjectMapping;
 
 public static class ObjectMapperExtensions
 {
-    private static readonly MethodInfo MapToNewObjectMethod;
+    private static readonly MethodInfo MapToNewObjectMethod = default!;
-    private static readonly MethodInfo MapToExistingObjectMethod;
+    private static readonly MethodInfo MapToExistingObjectMethod = default!;
 
     static ObjectMapperExtensions()
     {
@@ -32,13 +32,13 @@ public static class ObjectMapperExtensions
     {
         return MapToNewObjectMethod
             .MakeGenericMethod(sourceType, destinationType)
-            .Invoke(objectMapper, new[] { source });
+            .Invoke(objectMapper, new[] { source })!;
     }
 
     public static object Map(this IObjectMapper objectMapper, Type sourceType, Type destinationType, object source, object destination)
     {
         return MapToExistingObjectMethod
             .MakeGenericMethod(sourceType, destinationType)
-            .Invoke(objectMapper, new[] { source, destination });
+            .Invoke(objectMapper, new[] { source, destination })!;
     }
 }

framework/src/Volo.Abp.Swashbuckle/Microsoft/AspNetCore/Builder/AbpSwaggerUIBuilderExtensions.cs

@@ -9,7 +9,7 @@ public static class AbpSwaggerUIBuilderExtensions
 {
     public static IApplicationBuilder UseAbpSwaggerUI(
         this IApplicationBuilder app,
-        Action<SwaggerUIOptions> setupAction = null)
+        Action<SwaggerUIOptions>? setupAction = null)
     {
         var resolver = app.ApplicationServices.GetService<ISwaggerHtmlResolver>();
 
@@ -17,7 +17,7 @@ public static class AbpSwaggerUIBuilderExtensions
         {
             options.InjectJavascript("ui/abp.js");
             options.InjectJavascript("ui/abp.swagger.js");
-            options.IndexStream = () => resolver.Resolver();
+            options.IndexStream = () => resolver?.Resolver();
 
             setupAction?.Invoke(options);
         });

framework/src/Volo.Abp.Swashbuckle/Microsoft/Extensions/DependencyInjection/AbpSwaggerGenServiceCollectionExtensions.cs

@@ -12,7 +12,7 @@ public static class AbpSwaggerGenServiceCollectionExtensions
 {
     public static IServiceCollection AddAbpSwaggerGen(
         this IServiceCollection services,
-        Action<SwaggerGenOptions> setupAction = null)
+        Action<SwaggerGenOptions>? setupAction = null)
     {
         return services.AddSwaggerGen(
             options =>
@@ -34,7 +34,7 @@ public static class AbpSwaggerGenServiceCollectionExtensions
         this IServiceCollection services,
         [NotNull] string authority,
         [NotNull] Dictionary<string, string> scopes,
-        Action<SwaggerGenOptions> setupAction = null,
+        Action<SwaggerGenOptions>? setupAction = null,
         string authorizationEndpoint = "/connect/authorize",
         string tokenEndpoint = "/connect/token")
     {
@@ -82,10 +82,10 @@ public static class AbpSwaggerGenServiceCollectionExtensions
     public static IServiceCollection AddAbpSwaggerGenWithOidc(
         this IServiceCollection services,
         [NotNull] string authority,
-        string[] scopes = null,
+        string[]? scopes = null,
-        string[] flows = null,
+        string[]? flows = null,
-        string discoveryEndpoint = null,
+        string? discoveryEndpoint = null,
-        Action<SwaggerGenOptions> setupAction = null)
+        Action<SwaggerGenOptions>? setupAction = null)
     {
         var discoveryUrl = discoveryEndpoint != null ?
             new Uri(discoveryEndpoint) :

framework/src/Volo.Abp.Swashbuckle/Volo.Abp.Swashbuckle.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFramework>net7.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
         <AssemblyName>Volo.Abp.Swashbuckle</AssemblyName>
         <PackageId>Volo.Abp.Swashbuckle</PackageId>
         <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>