diff --git a/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Fixtures/BaseFixture.cs b/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Fixtures/BaseFixture.cs
index 6588b9e..7c50ba4 100644
--- a/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Fixtures/BaseFixture.cs
+++ b/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Fixtures/BaseFixture.cs
@@ -19,8 +19,8 @@ public static async Task<IServiceProvider> Init(int port, int? whiteLabelPort, A
         //app.Services.AddTransient<IUnitOfWork>((serviceProvider) => new UnitOfWork(serviceProvider));
         app.Services.AddTransient(serviceProvider => new MyTestContext(serviceProvider.GetService<IEntityFrameworkCoreDatabaseBuilder>()));
         app.Services.AddTransient<IEntityFrameworkCoreDatabaseBuilder, DatabaseBuilder>();
-        app.Services.AddSingleton(service => new WhiteLabelManager(service));
-        app.Services.AddSingleton<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
+        app.Services.AddTransient(service => new WhiteLabelManager(service));
+        app.Services.AddTransient<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
         {
             return new DefaultUniqueIdentityManager(provider.GetService<WhiteLabelManager>().CurrentWhiteLabel);
         });
diff --git a/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Program.cs b/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Program.cs
index e726124..34abca2 100644
--- a/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Program.cs
+++ b/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Program.cs
@@ -20,8 +20,8 @@ public static async Task Main(string[] args)
             app.Services.AddScoped((serviceProvider) => new UnitOfWork(serviceProvider).GetLongContractLogic<UserEntity, UserEntity, UserEntity, UserEntity>());
             app.Services.AddTransient(serviceProvider => new MyTestContext(serviceProvider.GetService<IEntityFrameworkCoreDatabaseBuilder>()));
             app.Services.AddScoped<IEntityFrameworkCoreDatabaseBuilder, DatabaseBuilder>();
-            app.Services.AddSingleton(service => new WhiteLabelManager(service));
-            app.Services.AddSingleton<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
+            app.Services.AddTransient(service => new WhiteLabelManager(service));
+            app.Services.AddTransient<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
             {
                 return new DefaultUniqueIdentityManager(provider.GetService<WhiteLabelManager>().CurrentWhiteLabel);
             });
diff --git a/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Startup.cs b/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Startup.cs
index e579027..d2da504 100644
--- a/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Startup.cs
+++ b/src/CSharp/EasyMicroservices.Cores.AspCore.Tests/Startup.cs
@@ -22,8 +22,8 @@ static WebApplicationBuilder CreateBuilder(long port)
             app.Services.AddTransient<IUnitOfWork>((serviceProvider) => new UnitOfWork(serviceProvider));
             app.Services.AddTransient(serviceProvider => new MyTestContext(serviceProvider.GetService<IEntityFrameworkCoreDatabaseBuilder>()));
             app.Services.AddTransient<IEntityFrameworkCoreDatabaseBuilder, DatabaseBuilder>();
-            app.Services.AddSingleton(service => new WhiteLabelManager(service));
-            app.Services.AddSingleton<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
+            app.Services.AddTransient(service => new WhiteLabelManager(service));
+            app.Services.AddTransient<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
             {
                 return new DefaultUniqueIdentityManager(provider.GetService<WhiteLabelManager>().CurrentWhiteLabel);
             });
diff --git a/src/CSharp/EasyMicroservices.Cores.AspCoreApi/EasyMicroservices.Cores.AspCoreApi.csproj b/src/CSharp/EasyMicroservices.Cores.AspCoreApi/EasyMicroservices.Cores.AspCoreApi.csproj
index 791f2c7..cb83a66 100644
--- a/src/CSharp/EasyMicroservices.Cores.AspCoreApi/EasyMicroservices.Cores.AspCoreApi.csproj
+++ b/src/CSharp/EasyMicroservices.Cores.AspCoreApi/EasyMicroservices.Cores.AspCoreApi.csproj
@@ -4,7 +4,7 @@
     <TargetFrameworks>netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <Authors>EasyMicroservices</Authors>
-    <Version>0.0.1.43</Version>
+    <Version>0.0.1.44</Version>
     <Description>asp core servces.</Description>
     <Copyright>EasyMicroservices@gmail.com</Copyright>
     <PackageTags>core,cores,base,database,services,asp,aspnet</PackageTags>
diff --git a/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/EasyMicroservices.Cores.AspEntityFrameworkCoreApi.csproj b/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/EasyMicroservices.Cores.AspEntityFrameworkCoreApi.csproj
index f41b3d7..44a91a7 100644
--- a/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/EasyMicroservices.Cores.AspEntityFrameworkCoreApi.csproj
+++ b/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/EasyMicroservices.Cores.AspEntityFrameworkCoreApi.csproj
@@ -4,7 +4,7 @@
     <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <Authors>EasyMicroservices</Authors>
-    <Version>0.0.1.43</Version>
+    <Version>0.0.1.44</Version>
     <Description>asp core servces.</Description>
     <Copyright>EasyMicroservices@gmail.com</Copyright>
     <PackageTags>core,cores,base,database,services,asp,aspnet,aspcore,efcore</PackageTags>
diff --git a/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/StartUpExtensions.cs b/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/StartUpExtensions.cs
index 8559edc..5e24fa1 100644
--- a/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/StartUpExtensions.cs
+++ b/src/CSharp/EasyMicroservices.Cores.AspEntityFrameworkCoreApi/StartUpExtensions.cs
@@ -77,8 +77,8 @@ public static IServiceCollection Builder<TContext>(this IServiceCollection servi
             services.AddHttpContextAccessor();
             services.AddScoped<IUnitOfWork>(service => new UnitOfWork(service));
             services.AddScoped<IBaseUnitOfWork, UnitOfWork>();
-            services.AddSingleton(service => new WhiteLabelManager(service));
-            services.AddSingleton<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
+            services.AddTransient(service => new WhiteLabelManager(service));
+            services.AddTransient<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
             {
                 return new DefaultUniqueIdentityManager(provider.GetService<WhiteLabelManager>().CurrentWhiteLabel);
             });
diff --git a/src/CSharp/EasyMicroservices.Cores.Clients/EasyMicroservices.Cores.Clients.csproj b/src/CSharp/EasyMicroservices.Cores.Clients/EasyMicroservices.Cores.Clients.csproj
index 7713e19..51a1d53 100644
--- a/src/CSharp/EasyMicroservices.Cores.Clients/EasyMicroservices.Cores.Clients.csproj
+++ b/src/CSharp/EasyMicroservices.Cores.Clients/EasyMicroservices.Cores.Clients.csproj
@@ -4,7 +4,7 @@
     <TargetFrameworks>netstandard2.0;netstandard2.1;net6.0;net8.0</TargetFrameworks>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <Authors>EasyMicroservices</Authors>
-    <Version>0.0.1.43</Version>
+    <Version>0.0.1.44</Version>
     <Description>core of database.</Description>
     <Copyright>EasyMicroservices@gmail.com</Copyright>
     <PackageTags>core,cores,base,client,clients</PackageTags>
diff --git a/src/CSharp/EasyMicroservices.Cores.Contracts/EasyMicroservices.Cores.Contracts.csproj b/src/CSharp/EasyMicroservices.Cores.Contracts/EasyMicroservices.Cores.Contracts.csproj
index d43e37d..2e46c54 100644
--- a/src/CSharp/EasyMicroservices.Cores.Contracts/EasyMicroservices.Cores.Contracts.csproj
+++ b/src/CSharp/EasyMicroservices.Cores.Contracts/EasyMicroservices.Cores.Contracts.csproj
@@ -4,7 +4,7 @@
     <TargetFrameworks>netstandard2.0;netstandard2.1;net45;net6.0;net8.0</TargetFrameworks>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <Authors>EasyMicroservices</Authors>
-    <Version>0.0.1.43</Version>
+    <Version>0.0.1.44</Version>
     <Description>core contracts.</Description>
     <Copyright>EasyMicroservices@gmail.com</Copyright>
     <PackageTags>core,cores,base,contract,contracts,dto,dtos</PackageTags>
diff --git a/src/CSharp/EasyMicroservices.Cores.Database/EasyMicroservices.Cores.Database.csproj b/src/CSharp/EasyMicroservices.Cores.Database/EasyMicroservices.Cores.Database.csproj
index 5253481..d008ddc 100644
--- a/src/CSharp/EasyMicroservices.Cores.Database/EasyMicroservices.Cores.Database.csproj
+++ b/src/CSharp/EasyMicroservices.Cores.Database/EasyMicroservices.Cores.Database.csproj
@@ -4,7 +4,7 @@
     <TargetFrameworks>netstandard2.0;netstandard2.1;net45;net6.0;net8.0</TargetFrameworks>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <Authors>EasyMicroservices</Authors>
-    <Version>0.0.1.43</Version>
+    <Version>0.0.1.44</Version>
     <Description>core of database.</Description>
     <Copyright>EasyMicroservices@gmail.com</Copyright>
     <PackageTags>core,cores,base,database</PackageTags>
diff --git a/src/CSharp/EasyMicroservices.Cores.EntityFrameworkCore/EasyMicroservices.Cores.EntityFrameworkCore.csproj b/src/CSharp/EasyMicroservices.Cores.EntityFrameworkCore/EasyMicroservices.Cores.EntityFrameworkCore.csproj
index 44fe2a9..9f87dff 100644
--- a/src/CSharp/EasyMicroservices.Cores.EntityFrameworkCore/EasyMicroservices.Cores.EntityFrameworkCore.csproj
+++ b/src/CSharp/EasyMicroservices.Cores.EntityFrameworkCore/EasyMicroservices.Cores.EntityFrameworkCore.csproj
@@ -4,7 +4,7 @@
     <TargetFrameworks>netstandard2.1;net6.0;net8.0</TargetFrameworks>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <Authors>EasyMicroservices</Authors>
-    <Version>0.0.1.43</Version>
+    <Version>0.0.1.44</Version>
     <Description>ef core of database.</Description>
     <Copyright>EasyMicroservices@gmail.com</Copyright>
     <PackageTags>core,cores,base,database,ef,efcore</PackageTags>
diff --git a/src/CSharp/EasyMicroservices.Cores.Relational.EntityFrameworkCore/EasyMicroservices.Cores.Relational.EntityFrameworkCore.csproj b/src/CSharp/EasyMicroservices.Cores.Relational.EntityFrameworkCore/EasyMicroservices.Cores.Relational.EntityFrameworkCore.csproj
index f5ac325..be3e983 100644
--- a/src/CSharp/EasyMicroservices.Cores.Relational.EntityFrameworkCore/EasyMicroservices.Cores.Relational.EntityFrameworkCore.csproj
+++ b/src/CSharp/EasyMicroservices.Cores.Relational.EntityFrameworkCore/EasyMicroservices.Cores.Relational.EntityFrameworkCore.csproj
@@ -4,7 +4,7 @@
     <TargetFrameworks>netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <Authors>EasyMicroservices</Authors>
-    <Version>0.0.1.43</Version>
+    <Version>0.0.1.44</Version>
     <Description>ef core of Relational database.</Description>
     <Copyright>EasyMicroservices@gmail.com</Copyright>
     <PackageTags>core,cores,base,database,ef,efcore,Relational</PackageTags>
diff --git a/src/CSharp/EasyMicroservices.Cores.Tests/Fixtures/ServiceProviderFixture.cs b/src/CSharp/EasyMicroservices.Cores.Tests/Fixtures/ServiceProviderFixture.cs
index 6b57dca..13ece8f 100644
--- a/src/CSharp/EasyMicroservices.Cores.Tests/Fixtures/ServiceProviderFixture.cs
+++ b/src/CSharp/EasyMicroservices.Cores.Tests/Fixtures/ServiceProviderFixture.cs
@@ -30,8 +30,8 @@ public async Task InitializeAsync()
             serviceCollection.AddTransient(serviceProvider => new MyTestContext(serviceProvider.GetService<IEntityFrameworkCoreDatabaseBuilder>()));
             serviceCollection.AddTransient<RelationalCoreContext>(serviceProvider => new MyTestContext(serviceProvider.GetService<IEntityFrameworkCoreDatabaseBuilder>()));
             serviceCollection.AddTransient<IEntityFrameworkCoreDatabaseBuilder, DatabaseBuilder>();
-            serviceCollection.AddSingleton(service => new WhiteLabelManager(service));
-            serviceCollection.AddSingleton<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
+            serviceCollection.AddTransient(service => new WhiteLabelManager(service));
+            serviceCollection.AddTransient<IUniqueIdentityManager, DefaultUniqueIdentityManager>((provider) =>
             {
                 return new DefaultUniqueIdentityManager(provider.GetService<WhiteLabelManager>().CurrentWhiteLabel);
             });