避免重複提交:置灰按鈕

來源:互聯網
上載者:User

思路:當點擊提交按鈕後, disabled該按鈕直到執行完才enable按鈕.響應事件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">
        //響應initializeRequest事件
        Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(
        function (sender,e)
        {
            //獲得全域唯一的PageRequestManager執行個體
            var prm = Sys.WebForms.PageRequestManager.getInstance();
            //disabled按鈕
            document.all(e.get_postBackElement().id).disabled=true;
        });
        </script>
    </form>
</body>
</html>

 

2. CS:

 

Code
using 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);
    }
}

 

 

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