Save DataBase records in unit test’s using AOP in C#

In test cases I change some rows, add and remove. how to restore it. I try use this way: using PostSharp -AOP framework + TransactionScope objects. on OnEntry in testcase method I create transaction on OnExit from testcase method I remove it:

[Serializable]
   class DoNotMakeChangesInBase : OnMethodBoundaryAspect {
      public override void OnEntry(MethodExecutionEventArgs context) {
         context.MethodExecutionTag = new TransactionScope();
      }
      public override void OnExit(MethodExecutionEventArgs context) {
         using (context.MethodExecutionTag as IDisposable) ;
      }
   }

///using this as:

[DoNotMakeChangesInBase ]

[Test]

public void MyTestCase(){....}