diff --git a/DI/XDIHelperExtension.cs b/DI/XDIHelperExtension.cs
index 30c248d..fcd86f0 100644
--- a/DI/XDIHelperExtension.cs
+++ b/DI/XDIHelperExtension.cs
@@ -12,9 +12,11 @@ using xPushService.DI;
 using xPushService.Helpers;
 using xServices.Configurations;
 using xServices.Constants;
+using xServices.Databases;
 using xServices.Interfaces;
 using xServices.Providers;
 using xStorageService.DI;
+using xStringService.DI;
 
 namespace xServices.DI
 {
@@ -179,6 +181,12 @@ namespace xServices.DI
             //
             app.UseXPushService(pushHelper);
             #endregion
+
+            //
+            // Using String Service ...
+            app.UseXStringService(
+                isDevelopmentEnvironment: isDevelopmentEnvironment
+            );
         }
 
         //
@@ -235,7 +243,7 @@ namespace xServices.DI
                         //
                         // Register DataBase ...
                         services.AddXDatabase(
-                            lifetime: lifeTime,
+                            lifeTime: lifeTime,
                             descriptor: database,
                             configuration: configuration
                         );
@@ -264,6 +272,13 @@ namespace xServices.DI
             services.AddScoped<IXTestServiceProvider, XTestServiceProvider>();
             services.AddScoped<IXTestRepositoryProvider, XTestRepositoryProvider>();
             #endregion
+
+            //
+            // String Service ...
+            services.AddXStringService<XApiDbContext>(
+                lifeTime: lifeTime,
+                repositoryType: xDataService.Constants.XRepositoryType.EF
+            );
         }
         #endregion        
     }
diff --git a/xServices.csproj b/xServices.csproj
index 20817f3..9f481fe 100644
--- a/xServices.csproj
+++ b/xServices.csproj
@@ -34,6 +34,7 @@
     <!-- <ProjectReference Include="..\XAiService\XAiService.csproj" /> -->
     <!-- <ProjectReference Include="..\xDataHelper\xDataHelper.csproj" /> -->
     <!-- <ProjectReference Include="..\xPushHelper\xPushHelper.csproj" /> -->
+    <ProjectReference Include="..\xStringService\xStringService.csproj" />
     <ProjectReference Include="..\xIdentityHelper\xIdentityHelper.csproj" />
     <ProjectReference Include="..\xMessageService\xMessageService.csproj" />
     <ProjectReference Include="..\xStorageService\xStorageService.csproj" />