c# 数据库回滚

SqlConnection conn = new SqlConnection("Data Source = DATABASE-VPC\\SQL2005; User ID = sa; password = admin; Initial Catalog = Jiang; Pooling=true");

                SqlTransaction mytran;//引用

                conn.Open();

                mytran = conn.BeginTransaction();//形如数据事务

                try

                {

                    SqlCommand cmd = new SqlCommand();

      

                    cmd.Transaction = mytran;

                    cmd.Connection = conn;

                    cmd.CommandType = CommandType.Text;

                    cmd.CommandText = "insert into [member] values('admin')";

                    cmd.ExecuteNonQuery();

                    cmd.CommandType = CommandType.Text;

                    cmd.CommandText = "insert into [memberw] values('jiang')";

                    cmd.ExecuteNonQuery();

                    mytran.Commit();//提交数据库事务

                    conn.Close();

                }

                catch (Exception ex)

                {

                    mytran.Rollback();//回滚（出错的时候)

                }