思路：当点击提交按钮后， disabled该按钮直到执行完才enable按钮.响应事件initializeRequest
1. ASPX:
Code<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SumbitOnce.aspx.cs" Inherits="SumbitOnce" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<%= DateTime.Now.ToString() %>
<asp:Button ID="btnSubmit" runat="server" Text="提交" OnClick="btnSubmit_Click" />
</ContentTemplate>
</asp:UpdatePanel>
<script type="text/javascript" language="javascript">
//响应initializeRequest事件
Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(
function (sender,e)
{
//获得全局唯一的PageRequestManager实例
var prm = Sys.WebForms.PageRequestManager.getInstance();
//disabled按钮
document.all(e.get_postBackElement().id).disabled=true;
});
</script>
</form>
</body>
</html>
2. CS:
Codeusing System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Threading;
public partial class SumbitOnce : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
Thread.Sleep(3000);
}
}