diff --git a/DI/XDIHelperExtension.cs b/DI/XDIHelperExtension.cs
index cb1eb57..ee2089f 100644
--- a/DI/XDIHelperExtension.cs
+++ b/DI/XDIHelperExtension.cs
@@ -177,7 +177,7 @@ namespace xStringService.DI
                 //
                 descriptor = typeof(XStringServiceHelper)
                     .InvokeGenericMethod<XRepositoryDescriptor>(
-                        methodName: "GetXStringEfRepositoryDescriptor",
+                        methodName: "GetXStringEFRepositoryDescriptor",
                         runtimeType: contextType,
                         args: null
                 );
diff --git a/Configurations/.gitkeep b/Extensions/.gitkeep
similarity index 100%
rename from Configurations/.gitkeep
rename to Extensions/.gitkeep
diff --git a/Extensions/XModelExtensions.cs b/Extensions/XModelExtensions.cs
index 5a2ec58..26cda9a 100644
--- a/Extensions/XModelExtensions.cs
+++ b/Extensions/XModelExtensions.cs
@@ -9,51 +9,6 @@ namespace xStringService.Extensions
 {
     public static class XModelExtensions
     {
-        /// <summary>
-        /// Converts an Entity to Dto Representation ...
-        /// </summary>
-        /// <param name="source"></param>
-        /// <returns></returns>
-        public static XStringDto ToXStringDto(this XString source)
-        {
-            //
-            XStringDto result = new XStringDto();
-
-            //
-            result.Id = source.Id;
-            result.Language = source.Language;
-            result.ResourceTitle = source.ResourceTitle;
-            result.TranslatedValue = source.TranslatedValue;
-
-            //
-            return result;
-        }
-
-        /// <summary>
-        /// Converts a Collection of Entities to Dto ...
-        /// </summary>
-        /// <param name="source"></param>
-        /// <returns></returns>
-        public static IEnumerable<XStringDto> ToXStringDtos(this IEnumerable<XString> source)
-        {
-            //
-            var list = new List<XStringDto>();
-
-            //
-            // Validate ...
-            bool isValid = source.HasChild();
-            if (!isValid)
-            {
-                return list.AsEnumerable();
-            }
-
-            //
-            var result = source.Select(e => ToXStringDto(e));
-
-            //
-            return result;
-        }
-
         /// <summary>
         /// Converts an Entity to LocaleResource Dto ...
         /// </summary>
diff --git a/Helpers/.gitkeep b/Helpers/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/Helpers/XStringServiceHelper.cs b/Helpers/XStringServiceHelper.cs
index 1614812..7ab0732 100644
--- a/Helpers/XStringServiceHelper.cs
+++ b/Helpers/XStringServiceHelper.cs
@@ -1,5 +1,4 @@
 using GraphQL.Types;
-using MongoDB.Bson.Serialization.Serializers;
 using xDataHelper.Providers.GraphQL;
 using xDataService.Db;
 using xDataService.Models;
@@ -32,7 +31,7 @@ namespace xStringService.Helpers
             IXStringRepository,
             XStringEFRepository<TContext>,
             TContext
-        > GetXStringEfRepositoryDescriptor<TContext>()
+        > GetXStringEFRepositoryDescriptor<TContext>()
         where TContext : XDbContext
         {
             //
@@ -76,7 +75,7 @@ namespace xStringService.Helpers
             TContext,
             IXStringSeeder,
             TSeederImplementation
-        > GetXStringEfRepositoryDescriptor<TContext, TSeederImplementation>()
+        > GetXStringEFRepositoryDescriptor<TContext, TSeederImplementation>()
         where TContext : XDbContext
         where TSeederImplementation : XBaseDbSeeder<XString, int>
         {
diff --git a/Interfaces/.gitkeep b/Interfaces/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/Interfaces/Entities/IXStringRepositoryProvider.cs b/Interfaces/Entities/IXStringRepositoryProvider.cs
index cf3fa52..8fccaa4 100644
--- a/Interfaces/Entities/IXStringRepositoryProvider.cs
+++ b/Interfaces/Entities/IXStringRepositoryProvider.cs
@@ -4,6 +4,6 @@ using xStringService.Providers.Entities;
 
 namespace xStringService.Interfaces.Entities
 {
-    public interface IXStringRepositoryProvider : IXBaseEntityProviderr<XString, int, XStringEntityHub>
+    public interface IXStringRepositoryProvider : IXBaseEntityProvider<XString, int, XStringEntityHub>
     { }
 }
\ No newline at end of file
diff --git a/Models/.gitkeep b/Models/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/Providers/.gitkeep b/Providers/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/README.md b/README.md
index 378e671..c3ff7a5 100644
--- a/README.md
+++ b/README.md
@@ -6,11 +6,8 @@ it is a Part of xDashboard on SaherElm IT Center which provides:
 
 this module has following dependencies :
 
-- xModels
-- xCommons
 - xDataService
 - xPushService
-- xIdentityModels
 - xIdentityService
 
 for configure and use this Module refer to DI.XDIHelperExtension.cs file.
@@ -615,6 +612,53 @@ public abstract class XBaseStringResourceProvider : IXBaseStringResourceProvider
 }
 ```
 
+### Controllers
+
+there are some abstraction Layer of Controller Implementation for using Provided Services for managing data.
+
+- **XStringRepositoryControllerBase**: an abstract Controller for Provide Repository Actions (using Entity).
+- **XStringRepositoryProviderControllerBase**: an abstract Controller for Provide Repository Actions (using Entity and XEntityHub).
+- **XStringServiceControllerBase**: an abstract Controller for Provide Service Actions (using Dto).
+- **XStringServiceProviderControllerBase**: an abstract Controller for Provide Service Actions (using Dto and XDtoHub).
+- **XBaseStringResourceProviderControllerBase**: an abstract Controller for Provide Actions for Base String Resources.
+
+## Implementation
+
+you have to follow these steps for using this Module.
+
+- **DI Registration**: in this phase, all Provided Services Registered in DI.
+- **Middleware Usage**: in this phase, Service Middlewares Use to Handle Features.
+
+```C#
+public class Startup
+{
+    //
+    public void ConfigureServices(IServiceCollection services)
+    {
+        ...
+        //
+        // Register String Service ...
+        services.AddXStringService<XApiDbContext>(
+            lifeTime: lifeTime,
+            repositoryType: xDataService.Constants.XRepositoryType.EF
+        );
+        ...
+    }
+
+    //
+    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+    {
+        ...
+        //
+        // Using String Service ...
+        app.UseXStringService(
+            isDevelopmentEnvironment: isDevelopmentEnvironment
+        );
+        ...
+    }
+}
+```
+
 ## Maintainer
 
 Hadi Khazaee asl