--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Source/Data/Linq/DataContextTransaction.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,95 @@
+using System;
+using System.Data;
+
+using JetBrains.Annotations;
+
+namespace BLToolkit.Data.Linq
+{
+	public class DataContextTransaction : IDisposable
+	{
+		public DataContextTransaction([NotNull] DataContext dataContext)
+		{
+			if (dataContext == null) throw new ArgumentNullException("dataContext");
+
+			DataContext = dataContext;
+		}
+
+		public DataContext DataContext { get; set; }
+
+		int _transactionCounter;
+
+		public void BeginTransaction()
+		{
+			var db = DataContext.GetDBManager();
+
+			db.BeginTransaction();
+
+			if (_transactionCounter == 0)
+				DataContext.LockDbManagerCounter++;
+
+			_transactionCounter++;
+		}
+
+		public void BeginTransaction(IsolationLevel level)
+		{
+			var db = DataContext.GetDBManager();
+
+			db.BeginTransaction(level);
+
+			if (_transactionCounter == 0)
+				DataContext.LockDbManagerCounter++;
+
+			_transactionCounter++;
+		}
+
+		public void CommitTransaction()
+		{
+			if (_transactionCounter > 0)
+			{
+				var db = DataContext.GetDBManager();
+
+				db.CommitTransaction();
+
+				_transactionCounter--;
+
+				if (_transactionCounter == 0)
+				{
+					DataContext.LockDbManagerCounter--;
+					DataContext.ReleaseQuery();
+				}
+			}
+		}
+
+		public void RollbackTransaction()
+		{
+			if (_transactionCounter > 0)
+			{
+				var db = DataContext.GetDBManager();
+
+				db.RollbackTransaction();
+
+				_transactionCounter--;
+
+				if (_transactionCounter == 0)
+				{
+					DataContext.LockDbManagerCounter--;
+					DataContext.ReleaseQuery();
+				}
+			}
+		}
+
+		public void Dispose()
+		{
+			if (_transactionCounter > 0)
+			{
+				var db = DataContext.GetDBManager();
+
+				db.RollbackTransaction();
+
+				_transactionCounter = 0;
+
+				DataContext.LockDbManagerCounter--;
+			}
+		}
+	}
+}