用ADO.NET来使用事务

先把代码段记下来，省得到时候要用的时候再去翻硬盘中的源文件

代码

string  connString  =  WebConfigurationManager.ConnectionStrings[ " NorthwindConnectionString " ].ConnectionString;
        SqlConnection conn  =   new  SqlConnection(connString);
        conn.Open();
        SqlTransaction tran  =  conn.BeginTransaction();     // 创建事务Transaction

         string  strSQL  =   " INSERT INTO Employees(FirstName, LastName, City, Address) values (@paramFirstName,@paramLastName,@paramCity,@paramAddress) " ;
        SqlCommand cmd  =   new  SqlCommand(strSQL, conn,tran);         // 创建SqlCommand

         try
        {
            cmd.Parameters.Add( " @paramFirstName " , SqlDbType.NVarChar,  20 ).Value  =  txtFirstName.Text;
            cmd.Parameters.Add( " @paramLastName " , SqlDbType.NVarChar,  10 ).Value  =  txtLastName.Text;
            cmd.Parameters.Add( " @paramCity " , SqlDbType.NVarChar,  15 ).Value  =  txtCity.Text;
            cmd.Parameters.Add( " @paramAddress " , SqlDbType.NVarChar,  60 ).Value  =  txtAddress.Text;
            cmd.ExecuteNonQuery();
            tran.Commit();         // 确认事务
            txtMsg.Text  =   " 新增数据成功,事务确认! " ;
        }
         catch
        {
            tran.Rollback();    // 事务回滚
            txtMsg.Text  =   " 新增数据失败,事务Rollback! " ;
        }

         finally
        {
            conn.Close();
            conn.Dispose();
            tran.Dispose();
            cmd.Dispose();
        }