C#执行SQL事务用法实例

2020-01-24 02:10:22

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本文实例讲述了C#执行SQL事务用法。分享给大家供大家参考。具体分析如下：

1.通过存储过程。

2.通过C#中提供的Transaction。这里就来演示一下通过C#中提供的Transaction 执行SQL事务。

WebForm3.aspx.cs页面

复制代码代码如下:

using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Web;  
using System.Web.UI;  
using System.Web.UI.WebControls;  
using System.Configuration;  
using System.Data.SqlClient;  
  
namespace 用户激活  
{  
    public partial class WebForm3 : System.Web.UI.Page  
    {  
        protected void Page_Load(object sender, EventArgs e)  
        {  
  
        }  
  
        protected void Button1_Click(object sender, EventArgs e)  
        {  
            string connStr=ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString;  
            using(SqlConnection conn=new SqlConnection(connStr))  
            {  
                conn.Open();  
                using (SqlTransaction tran = conn.BeginTransaction()) //开始数据库事务。即创建一个事务对象tran  
                {  
                    using (SqlCommand cmd =new SqlCommand())  
                    {  
                        cmd.Connection = conn;  
                        cmd.Transaction = tran; //获取或设置将要其执行的事务  
                        try  
                        {  
                            //在try{}块里执行sqlconnection命令  
                            cmd.CommandText = "update bb set Moneys=Moneys-" + Money.Text + " where ID=" + ToID.Text;  
                            cmd.ExecuteNonQuery();  
                            cmd.CommandText = "update bb set Moneys=Moneys+" + Money.Text + " where ID=" + FromID.Text;  
                            cmd.ExecuteNonQuery();  
  
                            tran.Commit(); //如果两条sql命令都执行成功，则执行commit这个方法来执行这些操作。  
  
                            Msg.Text = "转账成功";  
                        }  
                        catch  
                        {  
                            Msg.Text = "转账失败";  
                            tran.Rollback();//如果执行不成功，发送异常，则执行rollback方法，回滚到事务操作开始之前。  
                        }  
                    }  
                }  
            }  
        }  
    }  
}

WebForm3.aspx页面

复制代码代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm3.aspx.cs" Inherits="用户激活.WebForm3" %>  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head id="Head1" runat="server">  
    <title></title>  
</head>  
<body>  
    <form id="form1" runat="server">  
    转账账户：<asp:TextBox ID="ToID" runat="server"></asp:TextBox></br>  
    接收账户：<asp:TextBox ID="FromID" runat="server"></asp:TextBox></br>  
    转账金额：<asp:TextBox ID="Money" runat="server"></asp:TextBox></br>  
    转账是否成功：<asp:Label ID="Msg" runat="server" Text=""></asp:Label></br>  
  
    <asp:Button ID="Button1" runat="server" Text="提交转账" onclick="Button1_Click" />  
    </form>  
</body>  
</html>

运行结果如下图所示：