Merge pull request #17062 from abpframework/liangshiwei/group3

Group3 Enable nullable annotations

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor.Theming/Volo.Abp.AspNetCore.Components.MauiBlazor.Theming.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFramework>net7.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
     </PropertyGroup>
 
     <ItemGroup>

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo.Abp.AspNetCore.Components.MauiBlazor.csproj

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

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/AbpAspNetCoreComponentsMauiBlazorModule.cs

@@ -51,7 +51,7 @@ public class AbpAspNetCoreComponentsMauiBlazorModule : AbpModule
         var cultureName = configuration.Localization?.CurrentCulture?.CultureName;
         if (!cultureName.IsNullOrEmpty())
         {
-            var culture = new CultureInfo(cultureName);
+            var culture = new CultureInfo(cultureName!);
             CultureInfo.DefaultThreadCurrentCulture = culture;
             CultureInfo.DefaultThreadCurrentUICulture = culture;
         }

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/AbpMauiBlazorClientHttpMessageHandler.cs

@@ -48,7 +48,7 @@ public class AbpMauiBlazorClientHttpMessageHandler : DelegatingHandler, ITransie
         if (!selectedLanguage.IsNullOrWhiteSpace())
         {
             request.Headers.AcceptLanguage.Clear();
-            request.Headers.AcceptLanguage.Add(new StringWithQualityHeaderValue(selectedLanguage));
+            request.Headers.AcceptLanguage.Add(new StringWithQualityHeaderValue(selectedLanguage!));
         }
     }
 }

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/ApplicationConfigurationCache.cs

@@ -7,11 +7,11 @@ namespace Volo.Abp.AspNetCore.Components.MauiBlazor;
 
 public class ApplicationConfigurationCache : ISingletonDependency
 {
-    protected ApplicationConfigurationDto Configuration { get; set; }
+    protected ApplicationConfigurationDto? Configuration { get; set; }
 
-    public event Action ApplicationConfigurationChanged;
+    public event Action? ApplicationConfigurationChanged;
 
-    public virtual ApplicationConfigurationDto Get()
+    public virtual ApplicationConfigurationDto? Get()
     {
         return Configuration;
     }

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/IMauiBlazorSelectedLanguageProvider.cs

@@ -4,5 +4,5 @@ namespace Volo.Abp.AspNetCore.Components.MauiBlazor;
 
 public interface IMauiBlazorSelectedLanguageProvider
 {
-    Task<string> GetSelectedLanguageAsync();
+    Task<string?> GetSelectedLanguageAsync();
 }

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/MauiBlazorCurrentTenantAccessor.cs

@@ -6,5 +6,5 @@ namespace Volo.Abp.AspNetCore.Components.MauiBlazor;
 [Dependency(ReplaceServices = true)]
 public class MauiBlazorCurrentTenantAccessor : ICurrentTenantAccessor, ISingletonDependency
 {
-    public BasicTenantInfo Current { get; set; }
+    public BasicTenantInfo? Current { get; set; }
 }

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/MauiBlazorRemoteTenantStore.cs

@@ -23,13 +23,13 @@ public class MauiBlazorRemoteTenantStore : ITenantStore, ITransientDependency
         Cache = cache;
     }
 
-    public async Task<TenantConfiguration> FindAsync(string name)
+    public async Task<TenantConfiguration?> FindAsync(string name)
     {
         var cacheKey = CreateCacheKey(name);
 
         var tenantConfiguration = await Cache.GetOrAddAsync(
             cacheKey,
-            async () => CreateTenantConfiguration(await TenantAppService.FindTenantByNameAsync(name)),
+            async () => CreateTenantConfiguration(await TenantAppService.FindTenantByNameAsync(name))!,
             () => new DistributedCacheEntryOptions
             {
                 AbsoluteExpirationRelativeToNow =
@@ -40,13 +40,13 @@ public class MauiBlazorRemoteTenantStore : ITenantStore, ITransientDependency
         return tenantConfiguration;
     }
 
-    public async Task<TenantConfiguration> FindAsync(Guid id)
+    public async Task<TenantConfiguration?> FindAsync(Guid id)
     {
         var cacheKey = CreateCacheKey(id);
 
         var tenantConfiguration = await Cache.GetOrAddAsync(
             cacheKey,
-            async () => CreateTenantConfiguration(await TenantAppService.FindTenantByIdAsync(id)),
+            async () => CreateTenantConfiguration(await TenantAppService.FindTenantByIdAsync(id))!,
             () => new DistributedCacheEntryOptions
             {
                 AbsoluteExpirationRelativeToNow =
@@ -57,13 +57,13 @@ public class MauiBlazorRemoteTenantStore : ITenantStore, ITransientDependency
         return tenantConfiguration;
     }
 
-    public TenantConfiguration Find(string name)
+    public TenantConfiguration? Find(string name)
     {
         var cacheKey = CreateCacheKey(name);
 
         var tenantConfiguration = Cache.GetOrAdd(
             cacheKey,
-            () => AsyncHelper.RunSync(async () => CreateTenantConfiguration(await TenantAppService.FindTenantByNameAsync(name))),
+            () => AsyncHelper.RunSync(async () => CreateTenantConfiguration(await TenantAppService.FindTenantByNameAsync(name)))!,
             () => new DistributedCacheEntryOptions
             {
                 AbsoluteExpirationRelativeToNow =
@@ -74,13 +74,13 @@ public class MauiBlazorRemoteTenantStore : ITenantStore, ITransientDependency
         return tenantConfiguration;
     }
 
-    public TenantConfiguration Find(Guid id)
+    public TenantConfiguration? Find(Guid id)
     {
         var cacheKey = CreateCacheKey(id);
 
         var tenantConfiguration = Cache.GetOrAdd(
             cacheKey,
-            () => AsyncHelper.RunSync(async () => CreateTenantConfiguration(await TenantAppService.FindTenantByIdAsync(id))),
+            () => AsyncHelper.RunSync(async () => CreateTenantConfiguration(await TenantAppService.FindTenantByIdAsync(id)))!,
             () => new DistributedCacheEntryOptions
             {
                 AbsoluteExpirationRelativeToNow =
@@ -91,7 +91,7 @@ public class MauiBlazorRemoteTenantStore : ITenantStore, ITransientDependency
         return tenantConfiguration;
     }
 
-    protected virtual TenantConfiguration CreateTenantConfiguration(FindTenantResultDto tenantResultDto)
+    protected virtual TenantConfiguration? CreateTenantConfiguration(FindTenantResultDto tenantResultDto)
     {
         if (!tenantResultDto.Success || tenantResultDto.TenantId == null)
         {

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/MauiBlazorServerUrlProvider.cs

@@ -17,7 +17,7 @@ public class MauiBlazorServerUrlProvider : IServerUrlProvider, ITransientDepende
         RemoteServiceConfigurationProvider = remoteServiceConfigurationProvider;
     }
 
-    public async Task<string> GetBaseUrlAsync(string remoteServiceName = null)
+    public async Task<string> GetBaseUrlAsync(string? remoteServiceName = null)
     {
         var remoteServiceConfiguration = await RemoteServiceConfigurationProvider.GetConfigurationOrDefaultAsync(
             remoteServiceName ?? RemoteServiceConfigurationDictionary.DefaultName

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/NullMauiBlazorSelectedLanguageProvider.cs

@@ -5,8 +5,8 @@ namespace Volo.Abp.AspNetCore.Components.MauiBlazor;
 
 public class NullMauiBlazorSelectedLanguageProvider : IMauiBlazorSelectedLanguageProvider, ITransientDependency
 {
-    public Task<string> GetSelectedLanguageAsync()
+    public Task<string?> GetSelectedLanguageAsync()
     {
-        return Task.FromResult((string)null);
+        return Task.FromResult((string?)null);
     }
 }

framework/src/Volo.Abp.AspNetCore.Components.Server.Theming/Volo.Abp.AspNetCore.Components.Server.Theming.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFramework>net7.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
         <IsPackable>true</IsPackable>
         <OutputType>Library</OutputType>
         <NoDefaultLaunchSettingsFile>true</NoDefaultLaunchSettingsFile>

framework/src/Volo.Abp.AspNetCore.Components.Server/Microsoft/AspNetCore/Authentication/Cookies/CookieAuthenticationOptionsExtensions.cs

@@ -33,7 +33,7 @@ public static class CookieAuthenticationOptionsExtensions
                 var openIdConnectOptions = await GetOpenIdConnectOptions(principalContext, oidcAuthenticationScheme);
                 var response = await openIdConnectOptions.Backchannel.IntrospectTokenAsync(new TokenIntrospectionRequest
                 {
-                    Address = openIdConnectOptions.Configuration?.IntrospectionEndpoint ?? openIdConnectOptions.Authority.EnsureEndsWith('/') + "connect/introspect",
+                    Address = openIdConnectOptions.Configuration?.IntrospectionEndpoint ?? openIdConnectOptions.Authority!.EnsureEndsWith('/') + "connect/introspect",
                     ClientId = openIdConnectOptions.ClientId,
                     ClientSecret = openIdConnectOptions.ClientSecret,
                     Token = accessToken

framework/src/Volo.Abp.AspNetCore.Components.Server/Volo.Abp.AspNetCore.Components.Server.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFramework>net7.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
         <IsPackable>true</IsPackable>
         <OutputType>Library</OutputType>
         <NoDefaultLaunchSettingsFile>true</NoDefaultLaunchSettingsFile>

framework/src/Volo.Abp.AspNetCore.Components.Server/Volo/Abp/AspNetCore/Components/Server/Extensibility/BlazorServerLookupApiRequestService.cs

@@ -62,7 +62,7 @@ public class BlazorServerLookupApiRequestService : ILookupApiRequestService, ITr
             {
                 baseUrl = NavigationManager.BaseUri;
                 client.BaseAddress = new Uri(baseUrl);
-                foreach (var header in HttpContextAccessor.HttpContext.Request.Headers)
+                foreach (var header in HttpContextAccessor.HttpContext!.Request.Headers)
                 {
                     requestMessage.Headers.TryAddWithoutValidation(header.Key, header.Value.ToArray());
                 }

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Components/DynamicLayoutComponent.razor.cs

@@ -6,5 +6,5 @@ namespace Volo.Abp.AspNetCore.Components.Web.Theming.Components;
 public partial class DynamicLayoutComponent : ComponentBase
 {
     [Inject]
-    protected IOptions<AbpDynamicLayoutComponentOptions> AbpDynamicLayoutComponentOptions { get; set; }
+    protected IOptions<AbpDynamicLayoutComponentOptions> AbpDynamicLayoutComponentOptions { get; set; } = default!;
 }

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Components/LayoutHooks/LayoutHook.razor.cs

@@ -10,15 +10,15 @@ namespace Volo.Abp.AspNetCore.Components.Web.Theming.Components.LayoutHooks;
 public partial class LayoutHook : ComponentBase
 {
     [Parameter]
-    public string Name { get; set; }
+    public string Name { get; set; } = default!;
     
     [Parameter]
-    public string Layout { get; set; }
+    public string? Layout { get; set; }
 
     [Inject]
-    protected IOptions<AbpLayoutHookOptions> LayoutHookOptions { get; set; }
+    protected IOptions<AbpLayoutHookOptions> LayoutHookOptions { get; set; } = default!;
 
-    protected LayoutHookViewModel LayoutHookViewModel { get; private set; }
+    protected LayoutHookViewModel LayoutHookViewModel { get; private set; } = default!;
 
     protected override Task OnInitializedAsync()
     {

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Layout/PageHeader.razor.cs

@@ -13,13 +13,13 @@ public partial class PageHeader : ComponentBase
 {
     protected List<RenderFragment> ToolbarItemRenders { get; set; }
 
-    public IPageToolbarManager PageToolbarManager { get; set; }
+    public IPageToolbarManager PageToolbarManager { get; set; } = default!;
 
     [Inject]
-    public PageLayout PageLayout { get; private set; }
+    public PageLayout PageLayout { get; private set; } = default!;
 
     [Parameter] // TODO: Consider removing this property in future and use only PageLayout.
-    public string Title { get => PageLayout.Title; set => PageLayout.Title = value; }
+    public string? Title { get => PageLayout.Title; set => PageLayout.Title = value; }
 
     [Parameter]
     public bool BreadcrumbShowHome { get; set; } = true;
@@ -28,7 +28,7 @@ public partial class PageHeader : ComponentBase
     public bool BreadcrumbShowCurrent { get; set; } = true;
 
     [Parameter]
-    public RenderFragment ChildContent { get; set; }
+    public RenderFragment ChildContent { get; set; } = default!;
 
     [Parameter] // TODO: Consider removing this property in future and use only PageLayout.
     public List<BreadcrumbItem> BreadcrumbItems {
@@ -44,7 +44,7 @@ public partial class PageHeader : ComponentBase
     }
 
     [Parameter]
-    public PageToolbar Toolbar { get; set; }
+    public PageToolbar? Toolbar { get; set; }
 
     public PageHeader()
     {

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Layout/PageLayout.cs

@@ -9,10 +9,10 @@ namespace Volo.Abp.AspNetCore.Components.Web.Theming.Layout;
 
 public class PageLayout : IScopedDependency, INotifyPropertyChanged
 {
-    private string title;
+    private string? title;
 
     // TODO: Consider using this property for setting Page Title too.
-    public virtual string Title {
+    public virtual string? Title {
         get => title;
         set {
             title = value;
@@ -20,9 +20,9 @@ public class PageLayout : IScopedDependency, INotifyPropertyChanged
         }
     }
 
-    private string menuItemName;
+    private string? menuItemName;
 
-    public string MenuItemName {
+    public string? MenuItemName {
         get => menuItemName;
         set
         {
@@ -35,9 +35,9 @@ public class PageLayout : IScopedDependency, INotifyPropertyChanged
 
     public virtual ObservableCollection<PageToolbarItem> ToolbarItems { get; } = new();
 
-    public event PropertyChangedEventHandler PropertyChanged;
+    public event PropertyChangedEventHandler? PropertyChanged;
 
-    protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
+    protected void OnPropertyChanged([CallerMemberName] string? propertyName = null)
     {
         PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
     }

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/PageToolbars/PageToolbarExtensions.cs

@@ -11,9 +11,9 @@ public static class PageToolbarExtensions
 {
     public static PageToolbar AddComponent<TComponent>(
         this PageToolbar toolbar,
-        Dictionary<string, object> arguments = null,
+        Dictionary<string, object?>? arguments = null,
         int order = 0,
-        string requiredPolicyName = null)
+        string? requiredPolicyName = null)
     {
         return toolbar.AddComponent(
             typeof(TComponent),
@@ -26,9 +26,9 @@ public static class PageToolbarExtensions
     public static PageToolbar AddComponent(
         this PageToolbar toolbar,
         Type componentType,
-        Dictionary<string, object> arguments = null,
+        Dictionary<string, object?>? arguments = null,
         int order = 0,
-        string requiredPolicyName = null)
+        string? requiredPolicyName = null)
     {
         toolbar.Contributors.Add(
             new SimplePageToolbarContributor(
@@ -46,14 +46,14 @@ public static class PageToolbarExtensions
         this PageToolbar toolbar,
         string text,
         Func<Task> clicked,
-        object icon = null,
+        object? icon = null,
-        Color color = null,
+        Color? color = null,
         bool disabled = false,
         int order = 0,
-        string requiredPolicyName = null)
+        string? requiredPolicyName = null)
     {
         toolbar.AddComponent<ToolbarButton>(
-            new Dictionary<string, object>
+            new Dictionary<string, object?>
             {
                     { nameof(ToolbarButton.Color), color ?? Color.Primary},
                     { nameof(ToolbarButton.Text), text},

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/PageToolbars/PageToolbarItem.cs

@@ -9,14 +9,13 @@ public class PageToolbarItem
     [NotNull]
     public Type ComponentType { get; }
 
-    [CanBeNull]
+    public Dictionary<string, object?>? Arguments { get; set; }
-    public Dictionary<string, object> Arguments { get; set; }
 
     public int Order { get; set; }
 
     public PageToolbarItem(
         [NotNull] Type componentType,
-        [CanBeNull] Dictionary<string, object> arguments = null,
+        Dictionary<string, object?>? arguments = null,
         int order = 0)
     {
         ComponentType = Check.NotNull(componentType, nameof(componentType));

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/PageToolbars/SimplePageToolbarContributor.cs

@@ -10,17 +10,17 @@ public class SimplePageToolbarContributor : IPageToolbarContributor
 {
     public Type ComponentType { get; }
 
-    public Dictionary<string, object> Arguments { get; set; }
+    public Dictionary<string, object?>? Arguments { get; set; }
 
     public int Order { get; }
 
-    public string RequiredPolicyName { get; }
+    public string? RequiredPolicyName { get; }
 
     public SimplePageToolbarContributor(
         Type componentType,
-        Dictionary<string, object> arguments = null,
+        Dictionary<string, object?>? arguments = null,
         int order = 0,
-        string requiredPolicyName = null)
+        string? requiredPolicyName = null)
     {
         ComponentType = componentType;
         Arguments = arguments;

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Routing/AbpRouterOptions.cs

@@ -4,7 +4,7 @@ namespace Volo.Abp.AspNetCore.Components.Web.Theming.Routing;
 
 public class AbpRouterOptions
 {
-    public Assembly AppAssembly { get; set; }
+    public Assembly AppAssembly { get; set; } = default!;
 
     public RouterAssemblyList AdditionalAssemblies { get; }
 

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Theming/AbpThemingOptions.cs

@@ -4,7 +4,7 @@ public class AbpThemingOptions
 {
     public ThemeDictionary Themes { get; }
 
-    public string DefaultThemeName { get; set; }
+    public string? DefaultThemeName { get; set; }
 
     public AbpThemingOptions()
     {

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Theming/DefaultThemeManager.cs

@@ -9,7 +9,7 @@ public class DefaultThemeManager : IThemeManager, IScopedDependency, IServicePro
     public IServiceProvider ServiceProvider { get; }
     public ITheme CurrentTheme => GetCurrentTheme();
     
-    private ITheme _currentTheme;
+    private ITheme? _currentTheme;
 
     protected IThemeSelector ThemeSelector { get; }
 

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Toolbars/IToolbarConfigurationContext.cs

@@ -17,8 +17,7 @@ public interface IToolbarConfigurationContext : IServiceProviderAccessor
 
     Task<bool> IsGrantedAsync(string policyName);
 
-    [CanBeNull]
+    IStringLocalizer? GetDefaultLocalizer();
-    IStringLocalizer GetDefaultLocalizer();
 
     [NotNull]
     public IStringLocalizer GetLocalizer<T>();

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Toolbars/ToolbarConfigurationContext.cs

@@ -32,8 +32,7 @@ public class ToolbarConfigurationContext : IToolbarConfigurationContext
         return AuthorizationService.IsGrantedAsync(policyName);
     }
 
-    [CanBeNull]
+    public IStringLocalizer? GetDefaultLocalizer()
-    public IStringLocalizer GetDefaultLocalizer()
     {
         return StringLocalizerFactory.CreateDefaultOrNull();
     }

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Toolbars/ToolbarItem.cs

@@ -9,7 +9,7 @@ public class ToolbarItem
         get => _componentType;
         set => _componentType = Check.NotNull(value, nameof(value));
     }
-    private Type _componentType;
+    private Type _componentType = default!;
 
     public int Order { get; set; }
 

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Volo.Abp.AspNetCore.Components.Web.Theming.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFramework>net7.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
   </PropertyGroup>
 
   <ItemGroup>

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo.Abp.AspNetCore.Components.Web.csproj

@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFramework>net7.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <RootNamespace />
   </PropertyGroup>
 

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/AbpBlazorClientHttpMessageHandler.cs

@@ -82,7 +82,7 @@ public class AbpBlazorClientHttpMessageHandler : DelegatingHandler, ITransientDe
 
         var selfUri = new Uri(_navigationManager.Uri);
 
-        if (request.RequestUri.Host != selfUri.Host || request.RequestUri.Port != selfUri.Port)
+        if (request.RequestUri!.Host != selfUri.Host || request.RequestUri.Port != selfUri.Port)
         {
             return;
         }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/AbpBlazorMessageLocalizerHelper.cs

@@ -14,12 +14,12 @@ public class AbpBlazorMessageLocalizerHelper<T>
         this.stringLocalizer = stringLocalizer;
     }
 
-    public string Localize(string message, [CanBeNull] IEnumerable<string> arguments)
+    public string Localize(string message, IEnumerable<string>? arguments)
     {
         try
         {
             return arguments?.Count() > 0
-                ? stringLocalizer[message, LocalizeMessageArguments(arguments)?.ToArray()]
+                ? stringLocalizer[message, LocalizeMessageArguments(arguments)?.ToArray()!]
                 : stringLocalizer[message];
         }
         catch

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/CookieOptions.cs

@@ -5,6 +5,6 @@ namespace Volo.Abp.AspNetCore.Components.Web;
 public class CookieOptions
 {
     public DateTimeOffset? ExpireDate { get; set; }
-    public string Path { get; set; }
+    public string? Path { get; set; }
     public bool Secure { get; set; }
 }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/CookieService.cs

@@ -14,7 +14,7 @@ public class CookieService : ICookieService, ITransientDependency
         JsRuntime = jsRuntime;
     }
 
-    public async ValueTask SetAsync(string key, string value, CookieOptions options)
+    public async ValueTask SetAsync(string key, string value, CookieOptions? options)
     {
         await JsRuntime.InvokeVoidAsync("abp.utils.setCookieValue", key, value, options?.ExpireDate?.ToString("r"), options?.Path, options?.Secure);
     }
@@ -24,7 +24,7 @@ public class CookieService : ICookieService, ITransientDependency
         return await JsRuntime.InvokeAsync<string>("abp.utils.getCookieValue", key);
     }
 
-    public async ValueTask DeleteAsync(string key, string path = null)
+    public async ValueTask DeleteAsync(string key, string? path = null)
     {
         await JsRuntime.InvokeVoidAsync("abp.utils.deleteCookie", key);
     }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/DefaultServerUrlProvider.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.AspNetCore.Components.Web;
 
 public class DefaultServerUrlProvider : IServerUrlProvider, ISingletonDependency
 {
-    public Task<string> GetBaseUrlAsync(string remoteServiceName = null)
+    public Task<string> GetBaseUrlAsync(string? remoteServiceName = null)
     {
         return Task.FromResult("/");
     }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/DependencyInjection/ComponentsClientScopeServiceProviderAccessor.cs

@@ -7,5 +7,5 @@ public class ComponentsClientScopeServiceProviderAccessor :
     IClientScopeServiceProviderAccessor,
     ISingletonDependency
 {
-    public IServiceProvider ServiceProvider { get; set; }
+    public IServiceProvider ServiceProvider { get; set; } = default!;
 }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/ExceptionHandling/AbpExceptionHandlingLogger.cs

@@ -8,7 +8,7 @@ namespace Volo.Abp.AspNetCore.Components.Web.ExceptionHandling;
 public class AbpExceptionHandlingLogger : ILogger
 {
     private readonly IServiceCollection _serviceCollection;
-    private IUserExceptionInformer _userExceptionInformer;
+    private IUserExceptionInformer? _userExceptionInformer;
 
     public AbpExceptionHandlingLogger(IServiceCollection serviceCollection)
     {
@@ -19,7 +19,7 @@ public class AbpExceptionHandlingLogger : ILogger
         LogLevel logLevel,
         EventId eventId,
         TState state,
-        Exception exception,
+        Exception? exception,
         Func<TState, Exception, string> formatter)
     {
         if (exception == null)
@@ -58,7 +58,7 @@ public class AbpExceptionHandlingLogger : ILogger
         return logLevel == LogLevel.Critical || logLevel == LogLevel.Error;
     }
 
-    public virtual IDisposable BeginScope<TState>(TState state)
+    public virtual IDisposable? BeginScope<TState>(TState state) where TState : notnull
     {
         return NullDisposable.Instance;
     }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/ExceptionHandling/AbpExceptionHandlingLoggerProvider.cs

@@ -5,7 +5,7 @@ namespace Volo.Abp.AspNetCore.Components.Web.ExceptionHandling;
 
 public class AbpExceptionHandlingLoggerProvider : ILoggerProvider
 {
-    private AbpExceptionHandlingLogger _logger;
+    private AbpExceptionHandlingLogger? _logger;
     private static readonly object SyncObj = new object();
     private readonly IServiceCollection _serviceCollection;
 

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/ExceptionHandling/UserExceptionInformer.cs

@@ -39,11 +39,11 @@ public class UserExceptionInformer : IUserExceptionInformer, IScopedDependency
 
         if (errorInfo.Details.IsNullOrEmpty())
         {
-            MessageService.Error(errorInfo.Message);
+            MessageService.Error(errorInfo.Message!);
         }
         else
         {
-            MessageService.Error(errorInfo.Details, errorInfo.Message);
+            MessageService.Error(errorInfo.Details!, errorInfo.Message);
         }
     }
 
@@ -53,11 +53,11 @@ public class UserExceptionInformer : IUserExceptionInformer, IScopedDependency
 
         if (errorInfo.Details.IsNullOrEmpty())
         {
-            await MessageService.Error(errorInfo.Message);
+            await MessageService.Error(errorInfo.Message!);
         }
         else
         {
-            await MessageService.Error(errorInfo.Details, errorInfo.Message);
+            await MessageService.Error(errorInfo.Details!, errorInfo.Message);
         }
     }
 

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/Extensibility/EntityActions/EntityAction.cs

@@ -5,15 +5,15 @@ namespace Volo.Abp.AspNetCore.Components.Web.Extensibility.EntityActions;
 
 public class EntityAction : IEquatable<EntityAction>
 {
-    public string Text { get; set; }
+    public string Text { get; set; } = default!;
-    public Func<object, Task> Clicked { get; set; }
+    public Func<object, Task> Clicked { get; set; } = default!;
-    public Func<object, string> ConfirmationMessage { get; set; }
+    public Func<object, string>? ConfirmationMessage { get; set; }
     public bool Primary { get; set; }
-    public object Color { get; set; }
+    public object? Color { get; set; }
-    public string Icon { get; set; }
+    public string? Icon { get; set; }
-    public Func<object, bool> Visible { get; set; }
+    public Func<object, bool>? Visible { get; set; }
     public bool Disabled { get; set; }
-    public bool Equals(EntityAction other)
+    public bool Equals(EntityAction? other)
     {
         return string.Equals(Text, other?.Text, StringComparison.OrdinalIgnoreCase);
     }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/Extensibility/EntityActions/EntityActionDictionary.cs

@@ -6,6 +6,6 @@ public class EntityActionDictionary : Dictionary<string, List<EntityAction>>
 {
     public List<EntityAction> Get<T>()
     {
-        return this.GetOrAdd(typeof(T).FullName, () => new List<EntityAction>());
+        return this.GetOrAdd(typeof(T).FullName!, () => new List<EntityAction>());
     }
 }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/Extensibility/TableColumns/TableColumn.cs

@@ -8,23 +8,20 @@ namespace Volo.Abp.AspNetCore.Components.Web.Extensibility.TableColumns;
 
 public class TableColumn
 {
-    public string Title { get; set; }
+    public string Title { get; set; } = default!;
-    public string Data { get; set; }
+    public string Data { get; set; } = default!;
 
-    public string PropertyName { get; set; }
+    public string PropertyName { get; set; } = default!;
 
-    [CanBeNull]
+    public string? DisplayFormat { get; set; }
-    public string DisplayFormat { get; set; }
 
     public IFormatProvider DisplayFormatProvider { get; set; } = CultureInfo.CurrentCulture;
 
-    [CanBeNull]
+    public Type? Component { get; set; }
-    public Type Component { get; set; }
 
     public List<EntityAction> Actions { get; set; }
 
-    [CanBeNull]
+    public Func<object, string>? ValueConverter { get; set; }
-    public Func<object, string> ValueConverter { get; set; }
 
     public bool Sortable { get; set; }
 

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/Extensibility/TableColumns/TableColumnDictionary.cs

@@ -6,6 +6,6 @@ public class TableColumnDictionary : Dictionary<string, List<TableColumn>>
 {
     public List<TableColumn> Get<T>()
     {
-        return this.GetOrAdd(typeof(T).FullName, () => new List<TableColumn>());
+        return this.GetOrAdd(typeof(T).FullName!, () => new List<TableColumn>());
     }
 }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/ICookieService.cs

@@ -4,7 +4,7 @@ namespace Volo.Abp.AspNetCore.Components.Web;
 
 public interface ICookieService
 {
-    public ValueTask SetAsync(string key, string value, CookieOptions options = null);
+    public ValueTask SetAsync(string key, string value, CookieOptions? options = null);
     public ValueTask<string> GetAsync(string key);
-    public ValueTask DeleteAsync(string key, string path = null);
+    public ValueTask DeleteAsync(string key, string? path = null);
 }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/IServerUrlProvider.cs

@@ -4,5 +4,5 @@ namespace Volo.Abp.AspNetCore.Components.Web;
 
 public interface IServerUrlProvider
 {
-    Task<string> GetBaseUrlAsync(string remoteServiceName = null);
+    Task<string> GetBaseUrlAsync(string? remoteServiceName = null);
 }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/Messages/SimpleUiMessageService.cs

@@ -15,27 +15,27 @@ public class SimpleUiMessageService : IUiMessageService, ITransientDependency
         JsRuntime = jsRuntime;
     }
 
-    public async Task Info(string message, string title = null, Action<UiMessageOptions> options = null)
+    public async Task Info(string message, string? title = null, Action<UiMessageOptions>? options = null)
     {
         await JsRuntime.InvokeVoidAsync("alert", message);
     }
 
-    public async Task Success(string message, string title = null, Action<UiMessageOptions> options = null)
+    public async Task Success(string message, string? title = null, Action<UiMessageOptions>? options = null)
     {
         await JsRuntime.InvokeVoidAsync("alert", message);
     }
 
-    public async Task Warn(string message, string title = null, Action<UiMessageOptions> options = null)
+    public async Task Warn(string message, string? title = null, Action<UiMessageOptions>? options = null)
     {
         await JsRuntime.InvokeVoidAsync("alert", message);
     }
 
-    public async Task Error(string message, string title = null, Action<UiMessageOptions> options = null)
+    public async Task Error(string message, string? title = null, Action<UiMessageOptions>? options = null)
     {
         await JsRuntime.InvokeVoidAsync("alert", message);
     }
 
-    public async Task<bool> Confirm(string message, string title = null, Action<UiMessageOptions> options = null)
+    public async Task<bool> Confirm(string message, string? title = null, Action<UiMessageOptions>? options = null)
     {
         return await JsRuntime.InvokeAsync<bool>("confirm", message);
     }

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/Security/AbpComponentsClaimsCache.cs

@@ -9,10 +9,9 @@ namespace Volo.Abp.AspNetCore.Components.Web.Security;
 
 public class AbpComponentsClaimsCache : IScopedDependency
 {
-    public ClaimsPrincipal Principal { get; private set; }
+    public ClaimsPrincipal Principal { get; private set; } = default!;
 
-    [CanBeNull]
+    private readonly AuthenticationStateProvider? _authenticationStateProvider;
-    private readonly AuthenticationStateProvider _authenticationStateProvider;
 
     public AbpComponentsClaimsCache(
         IClientScopeServiceProviderAccessor serviceProviderAccessor)

framework/src/Volo.Abp.AspNetCore.Components.Web/Volo/Abp/AspNetCore/Components/Web/Security/ApplicationConfigurationChangedService.cs

@@ -6,7 +6,7 @@ public delegate void ApplicationConfigurationChangedHandler();
 
 public class ApplicationConfigurationChangedService : IScopedDependency
 {
-    public event ApplicationConfigurationChangedHandler Changed;
+    public event ApplicationConfigurationChangedHandler Changed = default!;
 
     public void NotifyChanged()
     {

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly.Theming/Volo.Abp.AspNetCore.Components.WebAssembly.Theming.csproj

@@ -5,6 +5,8 @@
 
     <PropertyGroup>
         <TargetFramework>net7.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <WarningsAsErrors>Nullable</WarningsAsErrors>
     </PropertyGroup>
 
     <ItemGroup>

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Microsoft/Extensions/DependencyInjection/EmptyWebAssemblyHostEnvironment.cs

@@ -4,7 +4,7 @@ namespace Microsoft.Extensions.DependencyInjection;
 
 public class EmptyWebAssemblyHostEnvironment : IWebAssemblyHostEnvironment
 {
-    public string Environment { get; set; }
+    public string Environment { get; set; } = default!;
 
-    public string BaseAddress { get; set; }
+    public string BaseAddress { get; set; } = default!;
 }

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Volo.Abp.AspNetCore.Components.WebAssembly.csproj

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

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Volo/Abp/AspNetCore/Components/WebAssembly/AbpAspNetCoreComponentsWebAssemblyModule.cs

@@ -67,7 +67,7 @@ public class AbpAspNetCoreComponentsWebAssemblyModule : AbpModule
         var cultureName = configuration.Localization?.CurrentCulture?.CultureName;
         if (!cultureName.IsNullOrEmpty())
         {
-            var culture = new CultureInfo(cultureName);
+            var culture = new CultureInfo(cultureName!);
             CultureInfo.DefaultThreadCurrentCulture = culture;
             CultureInfo.DefaultThreadCurrentUICulture = culture;
         }

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Volo/Abp/AspNetCore/Components/WebAssembly/ApplicationConfigurationCache.cs

@@ -5,9 +5,9 @@ namespace Volo.Abp.AspNetCore.Components.WebAssembly;
 
 public class ApplicationConfigurationCache : ISingletonDependency
 {
-    protected ApplicationConfigurationDto Configuration { get; set; }
+    protected ApplicationConfigurationDto? Configuration { get; set; }
 
-    public virtual ApplicationConfigurationDto Get()
+    public virtual ApplicationConfigurationDto? Get()
     {
         return Configuration;
     }

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Volo/Abp/AspNetCore/Components/WebAssembly/WebAssemblyCurrentTenantAccessor.cs

@@ -6,5 +6,5 @@ namespace Volo.Abp.AspNetCore.Components.WebAssembly;
 [Dependency(ReplaceServices = true)]
 public class WebAssemblyCurrentTenantAccessor : ICurrentTenantAccessor, ISingletonDependency
 {
-    public BasicTenantInfo Current { get; set; }
+    public BasicTenantInfo? Current { get; set; }
 }

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Volo/Abp/AspNetCore/Components/WebAssembly/WebAssemblyServerUrlProvider.cs

@@ -17,7 +17,7 @@ public class WebAssemblyServerUrlProvider : IServerUrlProvider, ITransientDepend
         RemoteServiceConfigurationProvider = remoteServiceConfigurationProvider;
     }
 
-    public async Task<string> GetBaseUrlAsync(string remoteServiceName = null)
+    public async Task<string> GetBaseUrlAsync(string? remoteServiceName = null)
     {
         var remoteServiceConfiguration = await RemoteServiceConfigurationProvider.GetConfigurationOrDefaultAsync(
             remoteServiceName ?? RemoteServiceConfigurationDictionary.DefaultName

framework/src/Volo.Abp.AspNetCore.Components/Volo.Abp.AspNetCore.Components.csproj

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

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/AbpComponentBase.cs

@@ -20,8 +20,8 @@ namespace Volo.Abp.AspNetCore.Components;
 
 public abstract class AbpComponentBase : OwningComponentBase
 {
-    protected IStringLocalizerFactory StringLocalizerFactory => LazyGetRequiredService(ref _stringLocalizerFactory);
+    protected IStringLocalizerFactory StringLocalizerFactory => LazyGetRequiredService(ref _stringLocalizerFactory)!;
-    private IStringLocalizerFactory _stringLocalizerFactory;
+    private IStringLocalizerFactory? _stringLocalizerFactory;
 
     protected IStringLocalizer L {
         get {
@@ -33,46 +33,46 @@ public abstract class AbpComponentBase : OwningComponentBase
             return _localizer;
         }
     }
-    private IStringLocalizer _localizer;
+    private IStringLocalizer? _localizer;
 
-    protected Type LocalizationResource {
+    protected Type? LocalizationResource {
         get => _localizationResource;
         set {
             _localizationResource = value;
             _localizer = null;
         }
     }
-    private Type _localizationResource = typeof(DefaultResource);
+    private Type? _localizationResource = typeof(DefaultResource);
 
     protected ILogger Logger => _lazyLogger.Value;
-    private Lazy<ILogger> _lazyLogger => new Lazy<ILogger>(() => LoggerFactory?.CreateLogger(GetType().FullName) ?? NullLogger.Instance, true);
+    private Lazy<ILogger> _lazyLogger => new Lazy<ILogger>(() => LoggerFactory?.CreateLogger(GetType().FullName!) ?? NullLogger.Instance, true);
 
-    protected ILoggerFactory LoggerFactory => LazyGetRequiredService(ref _loggerFactory);
+    protected ILoggerFactory LoggerFactory => LazyGetRequiredService(ref _loggerFactory)!;
-    private ILoggerFactory _loggerFactory;
+    private ILoggerFactory? _loggerFactory;
 
-    protected IAuthorizationService AuthorizationService => LazyGetRequiredService(ref _authorizationService);
+    protected IAuthorizationService AuthorizationService => LazyGetRequiredService(ref _authorizationService)!;
-    private IAuthorizationService _authorizationService;
+    private IAuthorizationService? _authorizationService;
 
-    protected ICurrentUser CurrentUser => LazyGetRequiredService(ref _currentUser);
+    protected ICurrentUser CurrentUser => LazyGetRequiredService(ref _currentUser)!;
-    private ICurrentUser _currentUser;
+    private ICurrentUser? _currentUser;
 
-    protected ICurrentTenant CurrentTenant => LazyGetRequiredService(ref _currentTenant);
+    protected ICurrentTenant CurrentTenant => LazyGetRequiredService(ref _currentTenant)!;
-    private ICurrentTenant _currentTenant;
+    private ICurrentTenant? _currentTenant;
 
-    protected IUiMessageService Message => LazyGetNonScopedRequiredService(ref _message);
+    protected IUiMessageService Message => LazyGetNonScopedRequiredService(ref _message)!;
-    private IUiMessageService _message;
+    private IUiMessageService? _message;
 
-    protected IUiNotificationService Notify => LazyGetNonScopedRequiredService(ref _notify);
+    protected IUiNotificationService Notify => LazyGetNonScopedRequiredService(ref _notify)!;
-    private IUiNotificationService _notify;
+    private IUiNotificationService? _notify;
 
-    protected IUserExceptionInformer UserExceptionInformer => LazyGetNonScopedRequiredService(ref _userExceptionInformer);
+    protected IUserExceptionInformer UserExceptionInformer => LazyGetNonScopedRequiredService(ref _userExceptionInformer)!;
-    private IUserExceptionInformer _userExceptionInformer;
+    private IUserExceptionInformer? _userExceptionInformer;
 
-    protected IAlertManager AlertManager => LazyGetNonScopedRequiredService(ref _alertManager);
+    protected IAlertManager AlertManager => LazyGetNonScopedRequiredService(ref _alertManager)!;
-    private IAlertManager _alertManager;
+    private IAlertManager? _alertManager;
 
-    protected IClock Clock => LazyGetNonScopedRequiredService(ref _clock);
+    protected IClock Clock => LazyGetNonScopedRequiredService(ref _clock)!;
-    private IClock _clock;
+    private IClock? _clock;
 
     protected AlertList Alerts => AlertManager.Alerts;
 
@@ -85,19 +85,19 @@ public abstract class AbpComponentBase : OwningComponentBase
 
             if (ObjectMapperContext == null)
             {
-                return LazyGetRequiredService(ref _objectMapper);
+                return LazyGetRequiredService(ref _objectMapper)!;
             }
 
             return LazyGetRequiredService(
                 typeof(IObjectMapper<>).MakeGenericType(ObjectMapperContext),
                 ref _objectMapper
-            );
+            )!;
         }
     }
 
-    private IObjectMapper _objectMapper;
+    private IObjectMapper? _objectMapper;
 
-    protected Type ObjectMapperContext { get; set; }
+    protected Type? ObjectMapperContext { get; set; }
 
     protected TService LazyGetRequiredService<TService>(ref TService reference) => LazyGetRequiredService(typeof(TService), ref reference);
 
@@ -111,13 +111,13 @@ public abstract class AbpComponentBase : OwningComponentBase
         return reference;
     }
 
-    protected TService LazyGetService<TService>(ref TService reference) => LazyGetService(typeof(TService), ref reference);
+    protected TService? LazyGetService<TService>(ref TService? reference) => LazyGetService(typeof(TService), ref reference);
 
-    protected TRef LazyGetService<TRef>(Type serviceType, ref TRef reference)
+    protected TRef? LazyGetService<TRef>(Type serviceType, ref TRef? reference)
     {
         if (reference == null)
         {
-            reference = (TRef)ScopedServices.GetService(serviceType);
+            reference = (TRef?)ScopedServices.GetService(serviceType);
         }
 
         return reference;
@@ -135,20 +135,20 @@ public abstract class AbpComponentBase : OwningComponentBase
         return reference;
     }
 
-    protected TService LazyGetNonScopedService<TService>(ref TService reference) => LazyGetNonScopedService(typeof(TService), ref reference);
+    protected TService? LazyGetNonScopedService<TService>(ref TService? reference) => LazyGetNonScopedService(typeof(TService), ref reference);
 
-    protected TRef LazyGetNonScopedService<TRef>(Type serviceType, ref TRef reference)
+    protected TRef? LazyGetNonScopedService<TRef>(Type serviceType, ref TRef? reference)
     {
         if (reference == null)
         {
-            reference = (TRef)NonScopedServices.GetService(serviceType);
+            reference = (TRef?)NonScopedServices.GetService(serviceType);
         }
 
         return reference;
     }
 
     [Inject]
-    protected IServiceProvider NonScopedServices { get; set; }
+    protected IServiceProvider NonScopedServices { get; set; } = default!;
 
     protected virtual IStringLocalizer CreateLocalizer()
     {

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Alerts/AlertList.cs

@@ -9,27 +9,27 @@ namespace Volo.Abp.AspNetCore.Components.Alerts;
 
 public class AlertList : ObservableCollection<AlertMessage>
 {
-    public void Add(AlertType type, string text, string title = null, bool dismissible = true)
+    public void Add(AlertType type, string text, string? title = null, bool dismissible = true)
     {
         Add(new AlertMessage(type, text, title, dismissible));
     }
 
-    public void Info(string text, string title = null, bool dismissible = true)
+    public void Info(string text, string? title = null, bool dismissible = true)
     {
         Add(new AlertMessage(AlertType.Info, text, title, dismissible));
     }
 
-    public void Warning(string text, string title = null, bool dismissible = true)
+    public void Warning(string text, string? title = null, bool dismissible = true)
     {
         Add(new AlertMessage(AlertType.Warning, text, title, dismissible));
     }
 
-    public void Danger(string text, string title = null, bool dismissible = true)
+    public void Danger(string text, string? title = null, bool dismissible = true)
     {
         Add(new AlertMessage(AlertType.Danger, text, title, dismissible));
     }
 
-    public void Success(string text, string title = null, bool dismissible = true)
+    public void Success(string text, string? title = null, bool dismissible = true)
     {
         Add(new AlertMessage(AlertType.Success, text, title, dismissible));
     }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Alerts/AlertMessage.cs

@@ -9,16 +9,15 @@ public class AlertMessage
         get => _text;
         set => _text = Check.NotNullOrWhiteSpace(value, nameof(value));
     }
-    private string _text;
+    private string _text = default!;
 
     public AlertType Type { get; set; }
 
-    [CanBeNull]
+    public string? Title { get; set; }
-    public string Title { get; set; }
 
     public bool Dismissible { get; set; }
 
-    public AlertMessage(AlertType type, [NotNull] string text, string title = null, bool dismissible = true)
+    public AlertMessage(AlertType type, [NotNull] string text, string? title = null, bool dismissible = true)
     {
         Type = type;
         Text = Check.NotNullOrWhiteSpace(text, nameof(text));

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Messages/IUiMessageService.cs

@@ -5,13 +5,13 @@ namespace Volo.Abp.AspNetCore.Components.Messages;
 
 public interface IUiMessageService
 {
-    Task Info(string message, string title = null, Action<UiMessageOptions> options = null);
+    Task Info(string message, string? title = null, Action<UiMessageOptions>? options = null);
 
-    Task Success(string message, string title = null, Action<UiMessageOptions> options = null);
+    Task Success(string message, string? title = null, Action<UiMessageOptions>? options = null);
 
-    Task Warn(string message, string title = null, Action<UiMessageOptions> options = null);
+    Task Warn(string message, string? title = null, Action<UiMessageOptions>? options = null);
 
-    Task Error(string message, string title = null, Action<UiMessageOptions> options = null);
+    Task Error(string message, string? title = null, Action<UiMessageOptions>? options = null);
 
-    Task<bool> Confirm(string message, string title = null, Action<UiMessageOptions> options = null);
+    Task<bool> Confirm(string message, string? title = null, Action<UiMessageOptions>? options = null);
 }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Messages/UiMessageEventArgs.cs

@@ -30,5 +30,5 @@ public class UiMessageEventArgs : EventArgs
 
     public UiMessageOptions Options { get; }
 
-    public TaskCompletionSource<bool> Callback { get; }
+    public TaskCompletionSource<bool> Callback { get; } = default!;
 }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Messages/UiMessageOptions.cs

@@ -18,35 +18,35 @@ public class UiMessageOptions
     /// <summary>
     /// Overrides the build-in message icon.
     /// </summary>
-    public object MessageIcon { get; set; }
+    public object? MessageIcon { get; set; }
 
     /// <summary>
     /// Custom text for the Ok button.
     /// </summary>
-    public string OkButtonText { get; set; }
+    public string? OkButtonText { get; set; }
 
     /// <summary>
     /// Custom icon for the Ok button.
     /// </summary>
-    public object OkButtonIcon { get; set; }
+    public object? OkButtonIcon { get; set; }
 
     /// <summary>
     /// Custom text for the Confirmation button.
     /// </summary>
-    public string ConfirmButtonText { get; set; }
+    public string? ConfirmButtonText { get; set; }
 
     /// <summary>
     /// Custom icon for the Confirmation button.
     /// </summary>
-    public object ConfirmButtonIcon { get; set; }
+    public object? ConfirmButtonIcon { get; set; }
 
     /// <summary>
     /// Custom text for the Cancel button.
     /// </summary>
-    public string CancelButtonText { get; set; }
+    public string? CancelButtonText { get; set; }
 
     /// <summary>
     /// Custom icon for the Cancel button.
     /// </summary>
-    public object CancelButtonIcon { get; set; }
+    public object? CancelButtonIcon { get; set; }
 }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Notifications/IUiNotificationService.cs

@@ -5,11 +5,11 @@ namespace Volo.Abp.AspNetCore.Components.Notifications;
 
 public interface IUiNotificationService
 {
-    Task Info(string message, string title = null, Action<UiNotificationOptions> options = null);
+    Task Info(string message, string? title = null, Action<UiNotificationOptions>? options = null);
 
-    Task Success(string message, string title = null, Action<UiNotificationOptions> options = null);
+    Task Success(string message, string? title = null, Action<UiNotificationOptions>? options = null);
 
-    Task Warn(string message, string title = null, Action<UiNotificationOptions> options = null);
+    Task Warn(string message, string? title = null, Action<UiNotificationOptions>? options = null);
 
-    Task Error(string message, string title = null, Action<UiNotificationOptions> options = null);
+    Task Error(string message, string? title = null, Action<UiNotificationOptions>? options = null);
 }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Notifications/NullUiNotificationService.cs

@@ -6,21 +6,21 @@ namespace Volo.Abp.AspNetCore.Components.Notifications;
 
 public class NullUiNotificationService : IUiNotificationService, ITransientDependency
 {
-    public Task Info(string message, string title = null, Action<UiNotificationOptions> options = null)
+    public Task Info(string message, string? title = null, Action<UiNotificationOptions>? options = null)
     {
         return Task.CompletedTask;
     }
 
-    public Task Success(string message, string title = null, Action<UiNotificationOptions> options = null)
+    public Task Success(string message, string? title = null, Action<UiNotificationOptions>? options = null)
     {
         return Task.CompletedTask;
     }
 
-    public Task Warn(string message, string title = null, Action<UiNotificationOptions> options = null)
+    public Task Warn(string message, string? title = null, Action<UiNotificationOptions>? options = null)
     {
         return Task.CompletedTask;
     }
-    public Task Error(string message, string title = null, Action<UiNotificationOptions> options = null)
+    public Task Error(string message, string? title = null, Action<UiNotificationOptions>? options = null)
     {
         return Task.CompletedTask;
     }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Notifications/UiNotificationOptions.cs

@@ -10,10 +10,10 @@ public class UiNotificationOptions
     /// <summary>
     /// Custom text for the Ok button.
     /// </summary>
-    public ILocalizableString OkButtonText { get; set; }
+    public ILocalizableString? OkButtonText { get; set; }
 
     /// <summary>
     /// Custom icon for the Ok button.
     /// </summary>
-    public object OkButtonIcon { get; set; }
+    public object? OkButtonIcon { get; set; }
 }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Progression/IUiPageProgressService.cs

@@ -16,5 +16,5 @@ public interface IUiPageProgressService
     /// <param name="percentage">Value of the progress from 0 to 100, or null for indeterminate progress.</param>
     /// <param name="options">Additional options.</param>
     /// <returns>Awaitable task.</returns>
-    Task Go(int? percentage, Action<UiPageProgressOptions> options = null);
+    Task Go(int? percentage, Action<UiPageProgressOptions>? options = null);
 }

framework/src/Volo.Abp.AspNetCore.Components/Volo/Abp/AspNetCore/Components/Progression/NullUiPageProgressService.cs

@@ -6,9 +6,9 @@ namespace Volo.Abp.AspNetCore.Components.Progression;
 
 public class NullUiPageProgressService : IUiPageProgressService, ISingletonDependency
 {
-    public event EventHandler<UiPageProgressEventArgs> ProgressChanged;
+    public event EventHandler<UiPageProgressEventArgs> ProgressChanged = default!;
 
-    public Task Go(int? percentage, Action<UiPageProgressOptions> options = null)
+    public Task Go(int? percentage, Action<UiPageProgressOptions>? options = null)
     {
         return Task.CompletedTask;
     }

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/Builder/AbpApplicationBuilderExtensions.cs

@@ -82,7 +82,7 @@ public static class AbpApplicationBuilderExtensions
     }
 
     public static IApplicationBuilder UseAbpRequestLocalization(this IApplicationBuilder app,
-        Action<RequestLocalizationOptions> optionsAction = null)
+        Action<RequestLocalizationOptions>? optionsAction = null)
     {
         app.ApplicationServices
             .GetRequiredService<IAbpRequestLocalizationOptionsProvider>()

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/Builder/AbpAspNetCoreApplicationBuilderExtensions.cs

@@ -17,7 +17,7 @@ public static class AbpAspNetCoreApplicationBuilderExtensions
     /// <returns></returns>
     public static IApplicationBuilder UseConfiguredEndpoints(
         this IApplicationBuilder app,
-        Action<IEndpointRouteBuilder> additionalConfigurationAction = null)
+        Action<IEndpointRouteBuilder>? additionalConfigurationAction = null)
     {
         var options = app.ApplicationServices
             .GetRequiredService<IOptions<AbpEndpointRouterOptions>>()

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/Builder/VirtualFileSystemApplicationBuilderExtensions.cs

@@ -7,7 +7,7 @@ namespace Microsoft.AspNetCore.Builder;
 public static class VirtualFileSystemApplicationBuilderExtensions
 {
     [Obsolete("Use UseStaticFiles() instead. UseVirtualFiles is not needed anymore.")]
-    public static IApplicationBuilder UseVirtualFiles(this IApplicationBuilder app, Action<StaticFileOptions> configure = null)
+    public static IApplicationBuilder UseVirtualFiles(this IApplicationBuilder app, Action<StaticFileOptions>? configure = null)
     {
         if (configure != null)
         {

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/Hosting/AbpHostingEnvironmentExtensions.cs

@@ -7,7 +7,7 @@ public static class AbpHostingEnvironmentExtensions
 {
     public static IConfigurationRoot BuildConfiguration(
         this IWebHostEnvironment env,
-        AbpConfigurationBuilderOptions options = null)
+        AbpConfigurationBuilderOptions? options = null)
     {
         options ??= new AbpConfigurationBuilderOptions();
 

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/Internal/ResponseContentTypeHelper.cs

@@ -28,7 +28,7 @@ public static class ResponseContentTypeHelper
         string? actionResultContentType,
         string? httpResponseContentType,
         (string defaultContentType, Encoding defaultEncoding) @default,
-        Func<string, Encoding> getEncoding,
+        Func<string, Encoding?> getEncoding,
         out string resolvedContentType,
         out Encoding resolvedContentTypeEncoding)
     {
@@ -66,7 +66,7 @@ public static class ResponseContentTypeHelper
         resolvedContentTypeEncoding = defaultContentTypeEncoding;
     }
 
-    public static Encoding GetEncoding(string mediaType)
+    public static Encoding? GetEncoding(string mediaType)
     {
         if (MediaTypeHeaderValue.TryParse(mediaType, out var parsed))
         {

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/RequestLocalization/AbpRequestLocalizationOptionsManager.cs

@@ -7,7 +7,7 @@ namespace Microsoft.AspNetCore.RequestLocalization;
 
 public class AbpRequestLocalizationOptionsManager : AbpDynamicOptionsManager<RequestLocalizationOptions>
 {
-    private RequestLocalizationOptions _options;
+    private RequestLocalizationOptions? _options;
 
     private readonly IAbpRequestLocalizationOptionsProvider _abpRequestLocalizationOptionsProvider;
 
@@ -19,7 +19,7 @@ public class AbpRequestLocalizationOptionsManager : AbpDynamicOptionsManager<Req
         _abpRequestLocalizationOptionsProvider = abpRequestLocalizationOptionsProvider;
     }
 
-    public override RequestLocalizationOptions Get(string name)
+    public override RequestLocalizationOptions Get(string? name)
     {
         return _options ?? base.Get(name);
     }

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/RequestLocalization/DefaultAbpRequestLocalizationOptionsProvider.cs

@@ -19,8 +19,8 @@ public class DefaultAbpRequestLocalizationOptionsProvider : IAbpRequestLocalizat
 {
     private readonly IServiceScopeFactory _serviceProviderFactory;
     private readonly SemaphoreSlim _syncSemaphore;
-    private Action<RequestLocalizationOptions> _optionsAction;
+    private Action<RequestLocalizationOptions>? _optionsAction;
-    private RequestLocalizationOptions _requestLocalizationOptions;
+    private RequestLocalizationOptions? _requestLocalizationOptions;
 
     public DefaultAbpRequestLocalizationOptionsProvider(IServiceScopeFactory serviceProviderFactory)
     {
@@ -28,7 +28,7 @@ public class DefaultAbpRequestLocalizationOptionsProvider : IAbpRequestLocalizat
         _syncSemaphore = new SemaphoreSlim(1, 1);
     }
 
-    public void InitLocalizationOptions(Action<RequestLocalizationOptions> optionsAction = null)
+    public void InitLocalizationOptions(Action<RequestLocalizationOptions>? optionsAction = null)
     {
         _optionsAction = optionsAction;
     }
@@ -85,7 +85,7 @@ public class DefaultAbpRequestLocalizationOptionsProvider : IAbpRequestLocalizat
         return _requestLocalizationOptions;
     }
 
-    private static RequestCulture DefaultGetRequestCulture(string defaultLanguage, IReadOnlyList<LanguageInfo> languages)
+    private static RequestCulture DefaultGetRequestCulture(string? defaultLanguage, IReadOnlyList<LanguageInfo> languages)
     {
         if (defaultLanguage == null)
         {

framework/src/Volo.Abp.AspNetCore/Microsoft/AspNetCore/RequestLocalization/IAbpRequestLocalizationOptionsProvider.cs

@@ -6,7 +6,7 @@ namespace Microsoft.AspNetCore.RequestLocalization;
 
 public interface IAbpRequestLocalizationOptionsProvider
 {
-    void InitLocalizationOptions(Action<RequestLocalizationOptions> optionsAction = null);
+    void InitLocalizationOptions(Action<RequestLocalizationOptions>? optionsAction = null);
 
     Task<RequestLocalizationOptions> GetLocalizationOptionsAsync();
 }

framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/CookieAuthenticationOptionsExtensions.cs

@@ -47,7 +47,7 @@ public static class CookieAuthenticationOptionsExtensions
 
                     var response = await openIdConnectOptions.Backchannel.IntrospectTokenAsync(new TokenIntrospectionRequest
                     {
-                        Address = openIdConnectOptions.Configuration?.IntrospectionEndpoint ?? openIdConnectOptions.Authority.EnsureEndsWith('/') + "connect/introspect",
+                        Address = openIdConnectOptions.Configuration?.IntrospectionEndpoint ?? openIdConnectOptions.Authority!.EnsureEndsWith('/') + "connect/introspect",
                         ClientId = openIdConnectOptions.ClientId,
                         ClientSecret = openIdConnectOptions.ClientSecret,
                         Token = accessToken

framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/EmptyHostingEnvironment.cs

@@ -5,15 +5,15 @@ namespace Microsoft.Extensions.DependencyInjection;
 
 internal class EmptyHostingEnvironment : IWebHostEnvironment
 {
-    public string EnvironmentName { get; set; }
+    public string EnvironmentName { get; set; } = default!;
 
-    public string ApplicationName { get; set; }
+    public string ApplicationName { get; set; } = default!;
 
-    public string WebRootPath { get; set; }
+    public string WebRootPath { get; set; } = default!;
 
-    public IFileProvider WebRootFileProvider { get; set; }
+    public IFileProvider WebRootFileProvider { get; set; } = default!;
 
-    public string ContentRootPath { get; set; }
+    public string ContentRootPath { get; set; } = default!;
 
-    public IFileProvider ContentRootFileProvider { get; set; }
+    public IFileProvider ContentRootFileProvider { get; set; } = default!;
 }

framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/WebApplicationBuilderExtensions.cs

@@ -11,7 +11,7 @@ public static class WebApplicationBuilderExtensions
 {
     public static async Task<IAbpApplicationWithExternalServiceProvider> AddApplicationAsync<TStartupModule>(
         [NotNull] this WebApplicationBuilder builder,
-        [CanBeNull] Action<AbpApplicationCreationOptions> optionsAction = null)
+        Action<AbpApplicationCreationOptions>? optionsAction = null)
         where TStartupModule : IAbpModule
     {
         return await builder.Services.AddApplicationAsync<TStartupModule>(options =>
@@ -28,7 +28,7 @@ public static class WebApplicationBuilderExtensions
     public static async Task<IAbpApplicationWithExternalServiceProvider> AddApplicationAsync(
         [NotNull] this WebApplicationBuilder builder,
         [NotNull] Type startupModuleType,
-        [CanBeNull] Action<AbpApplicationCreationOptions> optionsAction = null)
+        Action<AbpApplicationCreationOptions>? optionsAction = null)
     {
         return await builder.Services.AddApplicationAsync(startupModuleType, options =>
         {

framework/src/Volo.Abp.AspNetCore/Volo.Abp.AspNetCore.csproj

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

framework/src/Volo.Abp.AspNetCore/Volo/Abp/ApplicationInitializationContextExtensions.cs

@@ -12,7 +12,7 @@ public static class ApplicationInitializationContextExtensions
 {
     public static IApplicationBuilder GetApplicationBuilder(this ApplicationInitializationContext context)
     {
-        return context.ServiceProvider.GetRequiredService<IObjectAccessor<IApplicationBuilder>>().Value;
+        return context.ServiceProvider.GetRequiredService<IObjectAccessor<IApplicationBuilder>>().Value!;
     }
 
     public static IWebHostEnvironment GetEnvironment(this ApplicationInitializationContext context)
@@ -20,8 +20,7 @@ public static class ApplicationInitializationContextExtensions
         return context.ServiceProvider.GetRequiredService<IWebHostEnvironment>();
     }
 
-    [CanBeNull]
+    public static IWebHostEnvironment? GetEnvironmentOrNull(this ApplicationInitializationContext context)
-    public static IWebHostEnvironment GetEnvironmentOrNull(this ApplicationInitializationContext context)
     {
         return context.ServiceProvider.GetService<IWebHostEnvironment>();
     }

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/ExceptionHandling/AbpAuthorizationExceptionHandlerOptions.cs

@@ -2,5 +2,5 @@
 
 public class AbpAuthorizationExceptionHandlerOptions
 {
-    public string AuthenticationScheme { get; set; }
+    public string? AuthenticationScheme { get; set; }
 }

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/ExceptionHandling/DefaultAbpAuthorizationExceptionHandler.cs

@@ -17,11 +17,11 @@ public class DefaultAbpAuthorizationExceptionHandler : IAbpAuthorizationExceptio
         var isAuthenticated = httpContext.User.Identity?.IsAuthenticated ?? false;
         var authenticationSchemeProvider = httpContext.RequestServices.GetRequiredService<IAuthenticationSchemeProvider>();
 
-        AuthenticationScheme scheme = null;
+        AuthenticationScheme? scheme = null;
 
         if (!handlerOptions.AuthenticationScheme.IsNullOrWhiteSpace())
         {
-            scheme = await authenticationSchemeProvider.GetSchemeAsync(handlerOptions.AuthenticationScheme);
+            scheme = await authenticationSchemeProvider.GetSchemeAsync(handlerOptions.AuthenticationScheme!);
             if (scheme == null)
             {
                 throw new AbpException($"No authentication scheme named {handlerOptions.AuthenticationScheme} was found.");

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/ExceptionHandling/DefaultHttpExceptionStatusCodeFinder.cs

@@ -32,7 +32,7 @@ public class DefaultHttpExceptionStatusCodeFinder : IHttpExceptionStatusCodeFind
         if (exception is IHasErrorCode exceptionWithErrorCode &&
             !exceptionWithErrorCode.Code.IsNullOrWhiteSpace())
         {
-            if (Options.ErrorCodeToHttpStatusCodeMappings.TryGetValue(exceptionWithErrorCode.Code, out var status))
+            if (Options.ErrorCodeToHttpStatusCodeMappings.TryGetValue(exceptionWithErrorCode.Code!, out var status))
             {
                 return status;
             }
@@ -40,7 +40,7 @@ public class DefaultHttpExceptionStatusCodeFinder : IHttpExceptionStatusCodeFind
 
         if (exception is AbpAuthorizationException)
         {
-            return httpContext.User.Identity.IsAuthenticated
+            return httpContext.User.Identity!.IsAuthenticated
                 ? HttpStatusCode.Forbidden
                 : HttpStatusCode.Unauthorized;
         }

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/Security/AbpSecurityHeadersMiddleware.cs

@@ -32,7 +32,7 @@ public class AbpSecurityHeadersMiddleware : IMiddleware, ITransientDependency
         AddHeader(context, "X-Frame-Options", "SAMEORIGIN");
 
         var requestAcceptTypeHtml = context.Request.Headers["Accept"].Any(x =>
-            x.Contains("text/html") || x.Contains("*/*") || x.Contains("application/xhtml+xml"));
+            x!.Contains("text/html") || x.Contains("*/*") || x.Contains("application/xhtml+xml"));
             
         var endpoint = context.GetEndpoint();
 
@@ -109,7 +109,7 @@ public class AbpSecurityHeadersMiddleware : IMiddleware, ITransientDependency
 
     protected virtual string BuildContentSecurityPolicyValue(HttpContext context)
     {
-        var cspValue = Options.Value.ContentSecurityPolicyValue.IsNullOrWhiteSpace() ? DefaultValue : Options.Value.ContentSecurityPolicyValue;
+        var cspValue = Options.Value.ContentSecurityPolicyValue.IsNullOrWhiteSpace() ? DefaultValue : Options.Value.ContentSecurityPolicyValue!;
         if (!(Options.Value.UseContentSecurityPolicyScriptNonce &&
               context.Items.TryGetValue(AbpAspNetCoreConsts.ScriptNonceKey, out var nonce) &&
               nonce is string nonceValue && !string.IsNullOrEmpty(nonceValue)))
@@ -128,7 +128,7 @@ public class AbpSecurityHeadersMiddleware : IMiddleware, ITransientDependency
         }
 
         var newScriptSrcValue = scriptSrcValue + nonceStr;
-        return Options.Value.ContentSecurityPolicyValue.Replace(scriptSrcValue, newScriptSrcValue);
+        return Options.Value.ContentSecurityPolicyValue!.Replace(scriptSrcValue!, newScriptSrcValue);
     }
     
 

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/Security/AbpSecurityHeadersOptions.cs

@@ -11,7 +11,7 @@ public class AbpSecurityHeadersOptions
     
     public bool UseContentSecurityPolicyScriptNonce { get; set; }
     
-    public string ContentSecurityPolicyValue { get; set; }
+    public string? ContentSecurityPolicyValue { get; set; }
 
     public Dictionary<string, string> Headers { get; }
     

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/Tracing/AbpCorrelationIdMiddleware.cs

@@ -38,14 +38,14 @@ public class AbpCorrelationIdMiddleware : IMiddleware, ITransientDependency
 
     protected virtual string GetCorrelationIdFromRequest(HttpContext context)
     {
-        string correlationId = context.Request.Headers[_options.HttpHeaderName];
+        string? correlationId = context.Request.Headers[_options.HttpHeaderName];
         if (correlationId.IsNullOrEmpty())
         {
             correlationId = Guid.NewGuid().ToString("N");
             context.Request.Headers[_options.HttpHeaderName] = correlationId;
         }
 
-        return correlationId;
+        return correlationId!;
     }
 
     protected virtual void CheckAndSetCorrelationIdOnResponse(

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/VirtualFileSystem/AbpFileExtensionContentTypeProvider.cs

@@ -18,14 +18,14 @@ public class AbpFileExtensionContentTypeProvider : IContentTypeProvider, ITransi
         var extension = GetExtension(subpath);
         if (extension == null)
         {
-            contentType = null;
+            contentType = null!;
             return false;
         }
 
-        return Options.ContentTypeMaps.TryGetValue(extension, out contentType);
+        return Options.ContentTypeMaps.TryGetValue(extension, out contentType!);
     }
 
-    protected virtual string GetExtension(string path)
+    protected virtual string? GetExtension(string path)
     {
         if (string.IsNullOrWhiteSpace(path))
         {

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/VirtualFileSystem/RazorViewEngineVirtualFileProvider.cs

@@ -16,7 +16,7 @@ public class RazorViewEngineVirtualFileProvider : IFileProvider
     {
         _serviceProviderAccessor = serviceProviderAccessor;
         _fileProvider = new Lazy<IFileProvider>(
-            () => serviceProviderAccessor.Value.GetRequiredService<IVirtualFileProvider>(),
+            () => serviceProviderAccessor.Value!.GetRequiredService<IVirtualFileProvider>(),
             true
         );
     }

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/WebClientInfo/HttpContextWebClientInfoProvider.cs

@@ -18,16 +18,16 @@ public class HttpContextWebClientInfoProvider : IWebClientInfoProvider, ITransie
         HttpContextAccessor = httpContextAccessor;
     }
 
-    public string BrowserInfo => GetBrowserInfo();
+    public string? BrowserInfo => GetBrowserInfo();
 
-    public string ClientIpAddress => GetClientIpAddress();
+    public string? ClientIpAddress => GetClientIpAddress();
 
-    protected virtual string GetBrowserInfo()
+    protected virtual string? GetBrowserInfo()
     {
         return HttpContextAccessor.HttpContext?.Request?.Headers?["User-Agent"];
     }
 
-    protected virtual string GetClientIpAddress()
+    protected virtual string? GetClientIpAddress()
     {
         try
         {

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/WebClientInfo/IWebClientInfoProvider.cs

@@ -2,7 +2,7 @@
 
 public interface IWebClientInfoProvider
 {
-    string BrowserInfo { get; }
+    string? BrowserInfo { get; }
 
-    string ClientIpAddress { get; }
+    string? ClientIpAddress { get; }
 }

framework/src/Volo.Abp.AspNetCore/Volo/Abp/ServiceProviderAccessorExtensions.cs

@@ -7,8 +7,7 @@ namespace Volo.Abp;
 
 public static class ServiceProviderAccessorExtensions
 {
-    [CanBeNull]
+    public static HttpContext? GetHttpContext(this IServiceProviderAccessor serviceProviderAccessor)
-    public static HttpContext GetHttpContext(this IServiceProviderAccessor serviceProviderAccessor)
     {
         return serviceProviderAccessor.ServiceProvider.GetRequiredService<IHttpContextAccessor>().HttpContext;
     }

framework/src/Volo.Abp.RemoteServices/Volo/Abp/Http/Client/RemoteServiceConfiguration.cs

@@ -7,8 +7,8 @@ public class RemoteServiceConfiguration : Dictionary<string, string?>
     /// <summary>
     /// Base Url.
     /// </summary>
-    public string? BaseUrl {
+    public string BaseUrl {
-        get => this.GetOrDefault(nameof(BaseUrl));
+        get => this.GetOrDefault(nameof(BaseUrl))!;
         set => this[nameof(BaseUrl)] = value;
     }
 

framework/src/Volo.Abp.UI/Volo/Abp/Ui/LayoutHooks/LayoutHookViewModel.cs

@@ -4,9 +4,9 @@ public class LayoutHookViewModel
 {
     public LayoutHookInfo[] Hooks { get; }
 
-    public string Layout { get; }
+    public string? Layout { get; }
 
-    public LayoutHookViewModel(LayoutHookInfo[] hooks, string layout)
+    public LayoutHookViewModel(LayoutHookInfo[] hooks, string? layout)
     {
         Hooks = hooks;
         Layout = layout;