System.Transactions.TransactionOptions op = new System.Transactions.TransactionOptions();
                    op.IsolationLevel = System.Transactions.IsolationLevel.Serializable;
                    op.Timeout = TimeSpan.Parse("00:30:00");
                    System.Transactions.CommittableTransaction ctx = new System.Transactions.CommittableTransaction(op);

                    try
                    {
                        SHTableAdapter.Update(shDataSet.ALISH);
                        ctx.Commit();
                    }
                    catch (Exception ee)
                    {
                        ctx.Rollback();
                        string msg = ee.Message;
                        MessageBox.Show(msg);
                    }
                    finally
                    {
                        ctx.Dispose();
                        myDV.Dispose();
                    }

using System.Transactions;