asp.net 使用事務

            SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());

            conn.Open();
            SqlTransaction tarns = conn.BeginTransaction();

            SqlCommand comm = new SqlCommand();
            comm.Transaction = tarns;
            comm.CommandText = "delete from UserInfo where id=4";
            comm.Connection = conn;
           
            comm.ExecuteNonQuery();
           
            tarns.Commit();//執行
            tarns.Rollback();//回滾
            conn.Dispose();