From c8667233b457984579cf558df1d021ddfc1b312c Mon Sep 17 00:00:00 2001
From: liangshiwei <deawback@hotmail.com>
Date: Tue, 11 Jul 2023 16:26:15 +0800
Subject: [PATCH] Enable nullable annotations for
 Volo.Abp.AspNetCore.Mvc.Contracts

---
 .../MauiBlazor/MauiBlazorRemoteTenantStore.cs   |  2 +-
 .../MvcCachedApplicationConfigurationClient.cs  |  4 ++--
 .../Mvc/Client/MvcRemoteTenantStore.cs          |  2 +-
 .../Volo.Abp.AspNetCore.Mvc.Contracts.csproj    |  2 ++
 .../ApplicationConfigurationDto.cs              | 16 ++++++++++++++++
 .../ApplicationLocalizationConfigurationDto.cs  |  5 ++++-
 .../ApplicationLocalizationDto.cs               |  5 +++++
 .../ApplicationLocalizationRequestDto.cs        |  2 +-
 .../ApplicationLocalizationResourceDto.cs       |  9 +++++++--
 .../ApplicationSettingConfigurationDto.cs       |  7 ++++++-
 .../Mvc/ApplicationConfigurations/ClockDto.cs   |  2 +-
 .../CurrentCultureDto.cs                        | 16 ++++++++--------
 .../ApplicationConfigurations/CurrentUserDto.cs | 16 ++++++++--------
 .../DateTimeFormatDto.cs                        | 14 +++++++-------
 .../ObjectExtending/EntityExtensionDto.cs       |  6 ++++++
 .../ObjectExtending/ExtensionEnumDto.cs         |  7 ++++++-
 .../ObjectExtending/ExtensionEnumFieldDto.cs    |  4 ++--
 .../ExtensionPropertyAttributeDto.cs            |  7 ++++++-
 .../ObjectExtending/ExtensionPropertyDto.cs     | 17 ++++++++++++-----
 .../ObjectExtending/ExtensionPropertyUiDto.cs   |  8 ++++++++
 .../ExtensionPropertyUiLookupDto.cs             | 10 +++++-----
 .../ObjectExtending/LocalizableStringDto.cs     |  5 ++---
 .../ObjectExtending/ModuleExtensionDto.cs       |  6 ++++++
 .../ObjectExtending/ObjectExtensionsDto.cs      |  6 ++++++
 .../Mvc/ApplicationConfigurations/TimingDto.cs  | 15 +++++++++++++--
 .../Mvc/MultiTenancy/CurrentTenantDto.cs        |  2 +-
 .../Mvc/MultiTenancy/FindTenantResultDto.cs     |  2 +-
 .../AbpApplicationConfigurationAppService.cs    |  6 +++---
 .../CachedObjectExtensionsDtoService.cs         |  4 ++--
 29 files changed, 148 insertions(+), 59 deletions(-)

diff --git a/framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/MauiBlazorRemoteTenantStore.cs b/framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/MauiBlazorRemoteTenantStore.cs
index 235fe74354..d17a2b6f87 100644
--- a/framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/MauiBlazorRemoteTenantStore.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor/Volo/Abp/AspNetCore/Components/MauiBlazor/MauiBlazorRemoteTenantStore.cs
@@ -98,7 +98,7 @@ public class MauiBlazorRemoteTenantStore : ITenantStore, ITransientDependency
             return null;
         }
 
-        return new TenantConfiguration(tenantResultDto.TenantId.Value, tenantResultDto.Name);
+        return new TenantConfiguration(tenantResultDto.TenantId.Value, tenantResultDto.Name!);
     }
 
     protected virtual string CreateCacheKey(string tenantName)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcCachedApplicationConfigurationClient.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcCachedApplicationConfigurationClient.cs
index eb3c84bc78..b7d8a0df40 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcCachedApplicationConfigurationClient.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcCachedApplicationConfigurationClient.cs
@@ -37,7 +37,7 @@ public class MvcCachedApplicationConfigurationClient : ICachedApplicationConfigu
         Cache = cache;
     }
 
-    public async Task<ApplicationConfigurationDto?> GetAsync()
+    public async Task<ApplicationConfigurationDto> GetAsync()
     {
         var cacheKey = CreateCacheKey();
         var httpContext = HttpContextAccessor?.HttpContext;
@@ -85,7 +85,7 @@ public class MvcCachedApplicationConfigurationClient : ICachedApplicationConfigu
         return config;
     }
 
-    public ApplicationConfigurationDto? Get()
+    public ApplicationConfigurationDto Get()
     {
         var cacheKey = CreateCacheKey();
         var httpContext = HttpContextAccessor?.HttpContext;
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcRemoteTenantStore.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcRemoteTenantStore.cs
index 7b3670eb2a..aa9fc4beb8 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcRemoteTenantStore.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/MvcRemoteTenantStore.cs
@@ -146,7 +146,7 @@ public class MvcRemoteTenantStore : ITenantStore, ITransientDependency
             return null;
         }
 
-        return new TenantConfiguration(tenantResultDto.TenantId.Value, tenantResultDto.Name);
+        return new TenantConfiguration(tenantResultDto.TenantId.Value, tenantResultDto.Name!);
     }
 
     protected virtual string CreateCacheKey(string tenantName)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo.Abp.AspNetCore.Mvc.Contracts.csproj b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo.Abp.AspNetCore.Mvc.Contracts.csproj
index a89f7c60a7..e0ddc7cdbe 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo.Abp.AspNetCore.Mvc.Contracts.csproj
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo.Abp.AspNetCore.Mvc.Contracts.csproj
@@ -5,6 +5,8 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net7.0</TargetFrameworks>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>Nullable</WarningsAsErrors>
     <AssemblyName>Volo.Abp.AspNetCore.Mvc.Contracts</AssemblyName>
     <PackageId>Volo.Abp.AspNetCore.Mvc.Contracts</PackageId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationConfigurationDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationConfigurationDto.cs
index 61b5ec18db..e9c079cc84 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationConfigurationDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationConfigurationDto.cs
@@ -31,4 +31,20 @@ public class ApplicationConfigurationDto : IHasExtraProperties
     public ObjectExtensionsDto ObjectExtensions { get; set; }
 
     public ExtraPropertyDictionary ExtraProperties { get; set; }
+
+    public ApplicationConfigurationDto()
+    {
+        Localization = new ApplicationLocalizationConfigurationDto();
+        Auth = new ApplicationAuthConfigurationDto();
+        Setting = new ApplicationSettingConfigurationDto();
+        CurrentUser = new CurrentUserDto();
+        Features = new ApplicationFeatureConfigurationDto();
+        GlobalFeatures = new ApplicationGlobalFeatureConfigurationDto();
+        MultiTenancy = new MultiTenancyInfoDto();
+        CurrentTenant = new CurrentTenantDto();
+        Timing = new TimingDto();
+        Clock = new ClockDto();
+        ObjectExtensions = new ObjectExtensionsDto();
+        ExtraProperties = new ExtraPropertyDictionary();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationConfigurationDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationConfigurationDto.cs
index b1c0c16e76..5ae2a8ed2d 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationConfigurationDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationConfigurationDto.cs
@@ -28,7 +28,7 @@ public class ApplicationLocalizationConfigurationDto
 
     public CurrentCultureDto CurrentCulture { get; set; }
 
-    public string DefaultResourceName { get; set; }
+    public string? DefaultResourceName { get; set; }
 
     public Dictionary<string, List<NameValue>> LanguagesMap { get; set; }
 
@@ -38,5 +38,8 @@ public class ApplicationLocalizationConfigurationDto
     {
         Values = new Dictionary<string, Dictionary<string, string>>();
         Languages = new List<LanguageInfo>();
+        CurrentCulture = new CurrentCultureDto();
+        LanguagesMap = new Dictionary<string, List<NameValue>>();
+        LanguageFilesMap = new Dictionary<string, List<NameValue>>();
     }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationDto.cs
index d301490bed..2bbc604c95 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationDto.cs
@@ -7,4 +7,9 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
 public class ApplicationLocalizationDto
 {
     public Dictionary<string, ApplicationLocalizationResourceDto> Resources { get; set; }
+
+    public ApplicationLocalizationDto()
+    {
+        Resources = new Dictionary<string, ApplicationLocalizationResourceDto>();
+    }
 }
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationRequestDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationRequestDto.cs
index 535d572b3f..3b6debe695 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationRequestDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationRequestDto.cs
@@ -5,7 +5,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
 public class ApplicationLocalizationRequestDto
 {
     [Required]
-    public string CultureName { get; set; }
+    public string CultureName { get; set; } = default!;
     
     public bool OnlyDynamics { get; set; }
 }
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationResourceDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationResourceDto.cs
index a7200423d2..bca4ccd8ee 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationResourceDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationLocalizationResourceDto.cs
@@ -7,6 +7,11 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
 public class ApplicationLocalizationResourceDto
 {
     public Dictionary<string, string> Texts { get; set; }
-    
-    public string[] BaseResources { get; set; }
+
+    public string[] BaseResources { get; set; } = default!;
+
+    public ApplicationLocalizationResourceDto()
+    {
+        Texts = new Dictionary<string, string>();
+    }
 }
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationSettingConfigurationDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationSettingConfigurationDto.cs
index a1fbba2bbf..1ae30828cf 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationSettingConfigurationDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ApplicationSettingConfigurationDto.cs
@@ -6,5 +6,10 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
 [Serializable]
 public class ApplicationSettingConfigurationDto
 {
-    public Dictionary<string, string> Values { get; set; }
+    public Dictionary<string, string?> Values { get; set; }
+
+    public ApplicationSettingConfigurationDto()
+    {
+        Values = new Dictionary<string, string?>();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ClockDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ClockDto.cs
index 5112ac80ed..96cd5bd38b 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ClockDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ClockDto.cs
@@ -2,5 +2,5 @@
 
 public class ClockDto
 {
-    public string Kind { get; set; }
+    public string Kind { get; set; } = default!;
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentCultureDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentCultureDto.cs
index 83f1e0c803..054e626844 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentCultureDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentCultureDto.cs
@@ -5,21 +5,21 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
 [Serializable]
 public class CurrentCultureDto
 {
-    public string DisplayName { get; set; }
+    public string DisplayName { get; set; } = default!;
 
-    public string EnglishName { get; set; }
+    public string EnglishName { get; set; } = default!;
 
-    public string ThreeLetterIsoLanguageName { get; set; }
+    public string ThreeLetterIsoLanguageName { get; set; } = default!;
 
-    public string TwoLetterIsoLanguageName { get; set; }
+    public string TwoLetterIsoLanguageName { get; set; } = default!;
 
     public bool IsRightToLeft { get; set; }
 
-    public string CultureName { get; set; }
+    public string CultureName { get; set; } = default!;
 
-    public string Name { get; set; }
+    public string Name { get; set; } = default!;
 
-    public string NativeName { get; set; }
+    public string NativeName { get; set; } = default!;
 
-    public DateTimeFormatDto DateTimeFormat { get; set; }
+    public DateTimeFormatDto DateTimeFormat { get; set; } = default!;
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentUserDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentUserDto.cs
index 08a8c4c873..63a4b7a0e9 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentUserDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/CurrentUserDto.cs
@@ -15,23 +15,23 @@ public class CurrentUserDto
 
     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 string UserName { get; set; }
+    public string? UserName { get; set; }
 
-    public string Name { get; set; }
+    public string? Name { get; set; }
 
-    public string SurName { get; set; }
+    public string? SurName { get; set; }
 
-    public string Email { get; set; }
+    public string? Email { get; set; }
 
     public bool EmailVerified { get; set; }
 
-    public string PhoneNumber { get; set; }
+    public string? PhoneNumber { get; set; }
 
     public bool PhoneNumberVerified { get; set; }
 
-    public string[] Roles { get; set; }
+    public string[] Roles { get; set; } = default!;
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/DateTimeFormatDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/DateTimeFormatDto.cs
index 5f5ad14a5a..a16282efdd 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/DateTimeFormatDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/DateTimeFormatDto.cs
@@ -2,17 +2,17 @@
 
 public class DateTimeFormatDto
 {
-    public string CalendarAlgorithmType { get; set; }
+    public string CalendarAlgorithmType { get; set; } = default!;
 
-    public string DateTimeFormatLong { get; set; }
+    public string DateTimeFormatLong { get; set; } = default!;
 
-    public string ShortDatePattern { get; set; }
+    public string ShortDatePattern { get; set; } = default!;
 
-    public string FullDateTimePattern { get; set; }
+    public string FullDateTimePattern { get; set; } = default!;
 
-    public string DateSeparator { get; set; }
+    public string DateSeparator { get; set; } = default!;
 
-    public string ShortTimePattern { get; set; }
+    public string ShortTimePattern { get; set; } = default!;
 
-    public string LongTimePattern { get; set; }
+    public string LongTimePattern { get; set; } = default!;
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/EntityExtensionDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/EntityExtensionDto.cs
index 742da779f6..533349527c 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/EntityExtensionDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/EntityExtensionDto.cs
@@ -9,4 +9,10 @@ public class EntityExtensionDto
     public Dictionary<string, ExtensionPropertyDto> Properties { get; set; }
 
     public Dictionary<string, object> Configuration { get; set; }
+
+    public EntityExtensionDto()
+    {
+        Properties = new Dictionary<string, ExtensionPropertyDto>();
+        Configuration = new Dictionary<string, object>();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumDto.cs
index 24e9ec9a2f..cd1d210005 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumDto.cs
@@ -8,5 +8,10 @@ public class ExtensionEnumDto
 {
     public List<ExtensionEnumFieldDto> Fields { get; set; }
 
-    public string LocalizationResource { get; set; }
+    public string? LocalizationResource { get; set; }
+
+    public ExtensionEnumDto()
+    {
+        Fields = new List<ExtensionEnumFieldDto>();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumFieldDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumFieldDto.cs
index 13728d8409..03c0213015 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumFieldDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionEnumFieldDto.cs
@@ -5,7 +5,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations.ObjectExtending;
 [Serializable]
 public class ExtensionEnumFieldDto
 {
-    public string Name { get; set; }
+    public string? Name { get; set; }
 
-    public object Value { get; set; }
+    public object? Value { get; set; }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyAttributeDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyAttributeDto.cs
index 492756168d..ea28fb3cb9 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyAttributeDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyAttributeDto.cs
@@ -6,7 +6,12 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations.ObjectExtending;
 [Serializable]
 public class ExtensionPropertyAttributeDto
 {
-    public string TypeSimple { get; set; }
+    public string TypeSimple { get; set; } = default!;
 
     public Dictionary<string, object> Config { get; set; }
+
+    public ExtensionPropertyAttributeDto()
+    {
+        Config = new Dictionary<string, object>();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyDto.cs
index a1fb628e1a..68a915309d 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyDto.cs
@@ -7,12 +7,11 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations.ObjectExtending;
 [Serializable]
 public class ExtensionPropertyDto
 {
-    public string Type { get; set; }
+    public string Type { get; set; } = default!;
 
-    public string TypeSimple { get; set; }
+    public string TypeSimple { get; set; } = default!;
 
-    [CanBeNull]
-    public LocalizableStringDto DisplayName { get; set; }
+    public LocalizableStringDto? DisplayName { get; set; }
 
     public ExtensionPropertyApiDto Api { get; set; }
 
@@ -22,5 +21,13 @@ public class ExtensionPropertyDto
 
     public Dictionary<string, object> Configuration { get; set; }
 
-    public object DefaultValue { get; set; }
+    public object? DefaultValue { get; set; }
+
+    public ExtensionPropertyDto()
+    {
+        Api = new ExtensionPropertyApiDto();
+        Ui = new ExtensionPropertyUiDto();
+        Attributes = new List<ExtensionPropertyAttributeDto>();
+        Configuration = new Dictionary<string, object>();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiDto.cs
index cd43df5446..2c90299b15 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiDto.cs
@@ -9,4 +9,12 @@ public class ExtensionPropertyUiDto
     public ExtensionPropertyUiFormDto OnCreateForm { get; set; }
     public ExtensionPropertyUiFormDto OnEditForm { get; set; }
     public ExtensionPropertyUiLookupDto Lookup { get; set; }
+    
+    public ExtensionPropertyUiDto()
+    {
+        OnTable = new ExtensionPropertyUiTableDto();
+        OnCreateForm = new ExtensionPropertyUiFormDto();
+        OnEditForm = new ExtensionPropertyUiFormDto();
+        Lookup = new ExtensionPropertyUiLookupDto();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiLookupDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiLookupDto.cs
index b9bc94399c..ae5fd451de 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiLookupDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ExtensionPropertyUiLookupDto.cs
@@ -5,9 +5,9 @@ namespace Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations.ObjectExtending;
 [Serializable]
 public class ExtensionPropertyUiLookupDto
 {
-    public string Url { get; set; }
-    public string ResultListPropertyName { get; set; }
-    public string DisplayPropertyName { get; set; }
-    public string ValuePropertyName { get; set; }
-    public string FilterParamName { get; set; }
+    public string Url { get; set; } = default!;
+    public string ResultListPropertyName { get; set; } = default!;
+    public string DisplayPropertyName { get; set; } = default!;
+    public string ValuePropertyName { get; set; } = default!;
+    public string FilterParamName { get; set; } = default!;
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/LocalizableStringDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/LocalizableStringDto.cs
index 8127a90bd7..2fc1989ad5 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/LocalizableStringDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/LocalizableStringDto.cs
@@ -9,10 +9,9 @@ public class LocalizableStringDto
     [NotNull]
     public string Name { get; private set; }
 
-    [CanBeNull]
-    public string Resource { get; set; }
+    public string? Resource { get; set; }
 
-    public LocalizableStringDto([NotNull] string name, string resource = null)
+    public LocalizableStringDto([NotNull] string name, string? resource = null)
     {
         Name = Check.NotNullOrEmpty(name, nameof(name));
         Resource = resource;
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ModuleExtensionDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ModuleExtensionDto.cs
index aadd08cd28..50c944f6ec 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ModuleExtensionDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ModuleExtensionDto.cs
@@ -9,4 +9,10 @@ public class ModuleExtensionDto
     public Dictionary<string, EntityExtensionDto> Entities { get; set; }
 
     public Dictionary<string, object> Configuration { get; set; }
+
+    public ModuleExtensionDto()
+    {
+        Entities = new Dictionary<string, EntityExtensionDto>();
+        Configuration = new Dictionary<string, object>();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ObjectExtensionsDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ObjectExtensionsDto.cs
index f63935847b..b07855057b 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ObjectExtensionsDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/ObjectExtensionsDto.cs
@@ -9,4 +9,10 @@ public class ObjectExtensionsDto
     public Dictionary<string, ModuleExtensionDto> Modules { get; set; }
 
     public Dictionary<string, ExtensionEnumDto> Enums { get; set; }
+
+    public ObjectExtensionsDto()
+    {
+        Modules = new Dictionary<string, ModuleExtensionDto>();
+        Enums = new Dictionary<string, ExtensionEnumDto>();
+    }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/TimingDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/TimingDto.cs
index ca03407ee5..7aa38ede79 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/TimingDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/TimingDto.cs
@@ -3,6 +3,11 @@
 public class TimingDto
 {
     public TimeZone TimeZone { get; set; }
+
+    public TimingDto()
+    {
+        TimeZone = new TimeZone();
+    }
 }
 
 public class TimeZone
@@ -10,14 +15,20 @@ public class TimeZone
     public IanaTimeZone Iana { get; set; }
 
     public WindowsTimeZone Windows { get; set; }
+
+    public TimeZone()
+    {
+        Iana = new IanaTimeZone();
+        Windows = new WindowsTimeZone();
+    }
 }
 
 public class WindowsTimeZone
 {
-    public string TimeZoneId { get; set; }
+    public string? TimeZoneId { get; set; }
 }
 
 public class IanaTimeZone
 {
-    public string TimeZoneName { get; set; }
+    public string? TimeZoneName { get; set; }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/CurrentTenantDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/CurrentTenantDto.cs
index b8b361e7c8..d8c1351b3e 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/CurrentTenantDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/CurrentTenantDto.cs
@@ -8,7 +8,7 @@ public class CurrentTenantDto
 {
     public Guid? Id { get; set; }
 
-    public string Name { get; set; }
+    public string? Name { get; set; }
 
     public bool IsAvailable { get; set; }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/FindTenantResultDto.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/FindTenantResultDto.cs
index 64bcc77554..599b0b8a67 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/FindTenantResultDto.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Contracts/Volo/Abp/AspNetCore/Mvc/MultiTenancy/FindTenantResultDto.cs
@@ -9,7 +9,7 @@ public class FindTenantResultDto
 
     public Guid? TenantId { get; set; }
 
-    public string Name { get; set; }
+    public string? Name { get; set; }
 
     public bool IsActive { get; set; }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/AbpApplicationConfigurationAppService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/AbpApplicationConfigurationAppService.cs
index 4a6560b08a..e15bc7c136 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/AbpApplicationConfigurationAppService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/AbpApplicationConfigurationAppService.cs
@@ -127,7 +127,7 @@ public class AbpApplicationConfigurationAppService : ApplicationService, IAbpApp
         return new CurrentTenantDto()
         {
             Id = CurrentTenant.Id,
-            Name = CurrentTenant.Name,
+            Name = CurrentTenant.Name!,
             IsAvailable = CurrentTenant.IsAvailable
         };
     }
@@ -286,7 +286,7 @@ public class AbpApplicationConfigurationAppService : ApplicationService, IAbpApp
     {
         var result = new ApplicationSettingConfigurationDto
         {
-            Values = new Dictionary<string, string>()
+            Values = new Dictionary<string, string?>()
         };
 
         var settingDefinitions = _settingDefinitionManager.GetAll().Where(x => x.IsVisibleToClients);
@@ -356,7 +356,7 @@ public class AbpApplicationConfigurationAppService : ApplicationService, IAbpApp
     {
         return new ClockDto
         {
-            Kind = Enum.GetName(typeof(DateTimeKind), _abpClockOptions.Kind)
+            Kind = Enum.GetName(typeof(DateTimeKind), _abpClockOptions.Kind)!
         };
     }
 }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/CachedObjectExtensionsDtoService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/CachedObjectExtensionsDtoService.cs
index 6b99451b77..66232802c0 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/CachedObjectExtensionsDtoService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ApplicationConfigurations/ObjectExtending/CachedObjectExtensionsDtoService.cs
@@ -231,7 +231,7 @@ public class CachedObjectExtensionsDtoService : ICachedObjectExtensionsDtoServic
         foreach (var enumProperty in enumProperties)
         {
             // ReSharper disable once AssignNullToNotNullAttribute (enumProperty.Type.FullName can not be null for this case)
-            objectExtensionsDto.Enums[enumProperty.Type.FullName] = CreateExtensionEnumDto(enumProperty);
+            objectExtensionsDto.Enums[enumProperty.Type.FullName!] = CreateExtensionEnumDto(enumProperty);
         }
     }
 
@@ -248,7 +248,7 @@ public class CachedObjectExtensionsDtoService : ICachedObjectExtensionsDtoServic
             extensionEnumDto.Fields.Add(
                 new ExtensionEnumFieldDto
                 {
-                    Name = enumProperty.Type.GetEnumName(enumValue),
+                    Name = enumProperty.Type.GetEnumName(enumValue)!,
                     Value = enumValue
                 }
             );