SqlTransaction

 SqlCommand myCommand = myConnection.CreateCommand();
    SqlTransaction myTrans;
    myTrans = myConnection.BeginTransaction();
    myCommand.Connection = myConnection;
    myCommand.Transaction = myTrans;
    try
    {
      myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (100, ´Description´)";
      myCommand.ExecuteNonQuery();
      myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (101, ´Description´)";
      myCommand.ExecuteNonQuery();
      myTrans.Commit();
      Console.WriteLine("Both records are written to database.");
    }
    catch(Exception e)
    {
      try
      {
        myTrans.Rollback();
      }
      catch (SqlException ex)
      {
        if (myTrans.Connection != null)
        {
          Console.WriteLine("An exception of type " + ex.GetType() +
                            " was encountered while attempting to roll back the transaction.");
        }
      }
      Console.WriteLine("An exception of type " + e.GetType() +
                        " was encountered while inserting the data.");
      Console.WriteLine("Neither record was written to database.");
    }
    finally
    {
      myConnection.Close();
    }