C#執行SQL事務用法實例

2020-01-24 02:10:22

字體：大中小

來源：轉載

供稿：網友

本文實例講述了C#執行SQL事務用法。分享給大家供大家參考。具體分析如下：

1.通過存儲過程。

2.通過C#中提供的Transaction。這里就來演示一下通過C#中提供的Transaction 執行SQL事務。

WebForm3.aspx.cs頁面

復制代碼代碼如下:

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 用戶激活  
{  
    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()) //開始數據庫事務。即創建一個事務對象tran  
                {  
                    using (SqlCommand cmd =new SqlCommand())  
                    {  
                        cmd.Connection = conn;  
                        cmd.Transaction = tran; //獲取或設置將要其執行的事務  
                        try  
                        {  
                            //在try{}塊里執行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(); //如果兩條sql命令都執行成功，則執行commit這個方法來執行這些操作。  
  
                            Msg.Text = "轉賬成功";  
                        }  
                        catch  
                        {  
                            Msg.Text = "轉賬失敗";  
                            tran.Rollback();//如果執行不成功，發送異常，則執行rollback方法，回滾到事務操作開始之前。  
                        }  
                    }  
                }  
            }  
        }  
    }  
}

WebForm3.aspx頁面

復制代碼代碼如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm3.aspx.cs" Inherits="用戶激活.WebForm3" %>  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head id="Head1" runat="server">  
    <title></title>  
</head>  
<body>  
    <form id="form1" runat="server">  
    轉賬賬戶：<asp:TextBox ID="ToID" runat="server"></asp:TextBox></br>  
    接收賬戶：<asp:TextBox ID="FromID" runat="server"></asp:TextBox></br>  
    轉賬金額：<asp:TextBox ID="Money" runat="server"></asp:TextBox></br>  
    轉賬是否成功：<asp:Label ID="Msg" runat="server" Text=""></asp:Label></br>  
  
    <asp:Button ID="Button1" runat="server" Text="提交轉賬" onclick="Button1_Click" />  
    </form>  
</body>  
</html>

運行結果如下圖所示：