diff --git a/Mango.Nop.Core/Interfaces/IMgDbContextBase.cs b/Mango.Nop.Core/Interfaces/IMgDbContextBase.cs
index 8985c31..6e3ac79 100644
--- a/Mango.Nop.Core/Interfaces/IMgDbContextBase.cs
+++ b/Mango.Nop.Core/Interfaces/IMgDbContextBase.cs
@@ -1,6 +1,17 @@
-namespace Mango.Nop.Core.Interfaces;
+using Mango.Nop.Core.Loggers;
+using Nop.Data;
+using System.Transactions;
+
+namespace Mango.Nop.Core.Interfaces;
 
 public interface IMgDbContextBase //: IAcDbContextBase
 {
+    ILogger Logger { get; init; }
+    INopDataProvider DataProvider { get; init; }
 
+    bool Transaction(Func<TransactionScope, bool> callbackTransactionBody, bool throwException = false);
+    bool TransactionSafe(Func<TransactionScope, bool> callbackTransactionBody, bool throwException = false);
+
+    Task<bool> TransactionAsync(Func<TransactionScope, Task<bool>> callbackTransactionBody, bool throwException = false);
+    Task<bool> TransactionSafeAsync(Func<TransactionScope, Task<bool>> callbackTransactionBody, bool throwException = false);
 }
\ No newline at end of file
diff --git a/Mango.Nop.Core/Mango.Nop.Core.csproj b/Mango.Nop.Core/Mango.Nop.Core.csproj
index 0ca51c8..2919bda 100644
--- a/Mango.Nop.Core/Mango.Nop.Core.csproj
+++ b/Mango.Nop.Core/Mango.Nop.Core.csproj
@@ -37,6 +37,9 @@
     <Reference Include="AyCode.Interfaces.Server">
       <HintPath>..\..\..\..\..\..\Aycode\Source\AyCode.Core\AyCode.Services.Server\bin\FruitBank\Debug\net9.0\AyCode.Interfaces.Server.dll</HintPath>
     </Reference>
+    <Reference Include="AyCode.Utils">
+      <HintPath>..\..\..\..\..\..\Aycode\Source\AyCode.Core\AyCode.Services.Server\bin\FruitBank\Debug\net9.0\AyCode.Utils.dll</HintPath>
+    </Reference>
   </ItemGroup>
 
 </Project>
diff --git a/Mango.Nop.Core/Models/MgLoginModelResponse.cs b/Mango.Nop.Core/Models/MgLoginModelResponse.cs
index 2511b1c..4d60518 100644
--- a/Mango.Nop.Core/Models/MgLoginModelResponse.cs
+++ b/Mango.Nop.Core/Models/MgLoginModelResponse.cs
@@ -1,4 +1,5 @@
 using AyCode.Interfaces;
+using AyCode.Utils.Extensions;
 using Mango.Nop.Core.Dtos;
 using Nop.Core.Domain.Customers;
 
@@ -6,7 +7,7 @@ namespace Mango.Nop.Core.Models;
 
 public class MgLoginModelResponse : IAcModelDtoBaseEmpty
 {
-    public CustomerDto CustomerDto { get; set; }
+    public CustomerDto? CustomerDto { get; set; }
     public string ErrorMessage { get; set; }
 
     public MgLoginModelResponse()
@@ -18,4 +19,6 @@ public class MgLoginModelResponse : IAcModelDtoBaseEmpty
         CustomerDto = customerDto;
         ErrorMessage = errorMessage;
     }
+
+    public bool IsSuccesLogin => CustomerDto != null && ErrorMessage.IsNullOrWhiteSpace();
 }
\ No newline at end of file
diff --git a/Mango.Nop.Core/Repositories/MgDbContextBase.cs b/Mango.Nop.Core/Repositories/MgDbContextBase.cs
index 9493ae3..8b9678f 100644
--- a/Mango.Nop.Core/Repositories/MgDbContextBase.cs
+++ b/Mango.Nop.Core/Repositories/MgDbContextBase.cs
@@ -1,12 +1,13 @@
-using AyCode.Core.Loggers;
+using System.Transactions;
+using AyCode.Core.Consts;
+using AyCode.Core.Helpers;
+using AyCode.Core.Loggers;
+using AyCode.Utils.Extensions;
 using Mango.Nop.Core.Interfaces;
 using Mango.Nop.Core.Loggers;
-using Microsoft.AspNetCore.Http;
+using Mango.Nop.Services;
 using Nop.Core.Caching;
-using Nop.Core.Domain.Catalog;
-using Nop.Core.Events;
 using Nop.Data;
-using Nop.Services.Events;
 
 namespace Mango.Nop.Core.Repositories;
 
@@ -17,14 +18,111 @@ public class MgDbContextBase : IMgDbContextBase
     private readonly CacheKey _auctionAllKey = new("Nop.auction.all-{0}", AUCTION_PATTERN_KEY);
     public const string AUCTION_PATTERN_KEY = "Nop.auction.";
 
+    protected readonly IMgLockService LockService;
 
-    protected ILogger Logger;
-    protected INopDataProvider DataProvider;
-    //protected IHttpContextAccessor HttpContextAccessor;
+    public ILogger Logger { get; init; }
+    public INopDataProvider DataProvider { get; init; }
 
-    public MgDbContextBase(INopDataProvider dataProvider, IEnumerable<IAcLogWriterBase> logWriters)
+    //public IHttpContextAccessor HttpContextAccessor { get; init; }
+
+    public MgDbContextBase(INopDataProvider dataProvider, IMgLockService lockService, IEnumerable<IAcLogWriterBase> logWriters)
     {
+        LockService = lockService;
+
         Logger = new Logger<MgDbContextBase>(logWriters.ToArray());
         DataProvider = dataProvider;
     }
+
+    public bool Transaction(Func<TransactionScope, bool> callbackTransactionBody, bool throwException = false)
+        => TransactionInner(callbackTransactionBody, throwException);
+
+    /// <summary>
+    /// Using LoskService, global lock!
+    /// </summary>
+    /// <param name="callbackTransactionBody"></param>
+    /// <param name="throwException"></param>
+    /// <returns></returns>
+    public bool TransactionSafe(Func<TransactionScope, bool> callbackTransactionBody, bool throwException = false)
+    {
+        using (LockService.SemaphoreSlim.UseWait())
+        {
+            return TransactionInner(callbackTransactionBody, throwException);
+        }
+    }
+
+    public Task<bool> TransactionAsync(Func<TransactionScope, Task<bool>> callbackTransactionBody, bool throwException = false)
+        => TaskHelper.ToThreadPoolTask(() => TransactionInnerAsync(callbackTransactionBody, throwException));
+
+    /// <summary>
+    /// Using LoskService, global lock!
+    /// </summary>
+    /// <param name="callbackTransactionBody"></param>
+    /// <param name="throwException"></param>
+    /// <returns></returns>
+    public Task<bool> TransactionSafeAsync(Func<TransactionScope, Task<bool>> callbackTransactionBody, bool throwException = false)
+    {
+        return TaskHelper.ToThreadPoolTask(async () =>
+        {
+            using (await LockService.SemaphoreSlim.UseWaitAsync())
+            {
+                return await TransactionInnerAsync(callbackTransactionBody, throwException);
+            }
+        });
+    }
+
+    private async Task<bool> TransactionInnerAsync(Func<TransactionScope, Task<bool>> callbackTransactionBody, bool throwException = false)
+    {
+        bool result;
+
+        try
+        {
+            using (var transaction = new TransactionScope( /*TransactionScopeOption.RequiresNew, */TransactionScopeAsyncFlowOption.Enabled))
+            {
+                result = await callbackTransactionBody(transaction);
+
+                if (result) transaction.Complete();
+            }
+
+            if (!result) Logger.Warning($"TransactionInnerAsync({this}) transaction ROLLBACK!");
+        }
+        catch (Exception ex)
+        {
+            if (throwException) throw;
+
+            result = false;
+            Logger.Error($"TransactionInnerAsync({this}) transaction error! ex: {ex.Message}{AcEnv.NL}", ex);
+        }
+
+        return result;
+    }
+
+    private bool TransactionInner(Func<TransactionScope, bool> callbackTransactionBody, bool throwException = false)
+    {
+        bool result;
+
+        try
+        {
+            using var transaction = new TransactionScope( /*TransactionScopeOption.RequiresNew, */TransactionScopeAsyncFlowOption.Enabled);
+
+            result = callbackTransactionBody(transaction);
+
+            if (result) transaction.Complete();
+            else Logger.Warning($"TransactionInner({this}) transaction ROLLBACK!");
+        }
+        catch (Exception ex)
+        {
+            if (throwException) throw;
+
+            result = false;
+            Logger.Error($"TransactionInnerAsync({this}) transaction error! ex: {ex.Message}{AcEnv.NL}", ex);
+        }
+
+        return result;
+    }
+
+
+    public override string ToString()
+    {
+        return GetType().Name;
+    }
 }
\ No newline at end of file
diff --git a/Mango.Nop.Services/IMgLockService.cs b/Mango.Nop.Core/Services/IMgLockService.cs
similarity index 100%
rename from Mango.Nop.Services/IMgLockService.cs
rename to Mango.Nop.Core/Services/IMgLockService.cs