通过定时reload回发某页面请求避免因用户一直不操作而引起的Session过期-优快云博客

本文介绍了一种使用ASP.NET实现页面定时刷新的方法。通过设置隐藏域和JavaScript定时器配合服务器端逻辑，使得页面能够在指定时间内自动刷新，同时更新Session状态。

调用定时回发页面的主框架页面的Left菜单页面：

HTML部分
=======

Code
<from>
/*

*/
<iframe src="Message/RefreshMessage.aspx" height="0" runat="server" id="iframeRefresh" ></iframe>
</form>

.cs部分
=======

Code
protected void Page_Load(object sender, EventArgs e)
{

        if (Session["isRefresh"] != null && Session["isRefresh"].ToString() == "1")
        {
            this.iframeRefresh.Attributes["src"] = "ReloadOnTime.aspx";
        }
        else
        {
            this.iframeRefresh.Attributes["src"] = "OtherReloadOnTime.aspx";
        }
}

定时回发页面ReloadOnTime.aspx

HTML部分
=======

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

<!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>刷新Session</title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:TextBox ID="hidtxt_isRefresh" runat="server"></asp:TextBox>
    </form>
</body>
</html>
<script type="text/javascript" language='javascript'>
window.onload=function()
{
     if(document.all.hidtxt_isRefresh.value=="1")
     {
         window.setInterval("fn_BtnEventOnTime()",600000);
     }
}
function fn_BtnEventOnTime()
{
     window.location.reload();
}
</script>

.cs部分
=======

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;

public partial class ReloadOnTime : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //如果页面不让因用户不操作而过期
        if (Session["isRefresh"] != null)
        {
            if (Session["isRefresh"].ToString() == "1")
            {
                this.hidtxt_isRefresh.Text = "1";
            }
            else
            {
                this.hidtxt_isRefresh.Text = "0";
            }
        }
        else
        {
            this.hidtxt_isRefresh.Text = "0";
        }
    }
}