另类办法,实现点击按钮后禁用,直到操作完成后恢复,防止重复操作,实用

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DisableButton.aspx.cs" Inherits="DisableButton" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="btn1" runat="server" Text="提交数据" onclick="btn1_Click" />
    </div>
    </form>
</body>
</html>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class DisableButton : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        btn1.Attributes["onclick"] = this.GetPostBackEventReference(this.btn1) + ";this.value='处理中...';this.disabled=true;";
    }


    protected void btn1_Click(object sender, EventArgs e)
    {
        System.Threading.Thread.Sleep(3000); //三秒后恢复按钮
        btn1.Style.Remove("disabled");
    }
}