关于在多线程中访问session的问题（能解决给100）

mtxnyfz 2009-03-30 07:36:41

我用ajax发送一个异步请求到某个asp.net页面，这个页面开启一个多线程处理请求，但在这个线程中却不能访问session变量，如果不是用ajax发送请求则可以正常访问，向各位高手请教一下原因，感激不尽！！！！

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Jinglecat 2009-03-31

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应该是能够用的，但是你得保证主线程还没被回收掉

你的代码呢 ....

mtxnyfz 2009-03-31

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在线等啊

mtxnyfz 2009-03-31

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aspx文件代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="e2s2_province_cxtj_test" EnableSessionState="True" %>

<!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>无标题页</title>
</head>

<body>
<form id="form1" runat="server">
<div>
<input id="text1" type="text" onchange="add()" />
<input id="Button3" type="button" style="left: 27px; position: relative; top: 223px; width: 87px;" onclick="Button3_onclick()" />

<input id="Button2" type="button" value="button" />
<input id="text2" type="text" onchange="add()" />
=
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /><span id="result"></span></div>
<script type="text/javascript" >
var sign=0;

function add()
{
var a=window.document.getElementById('text1').value;
var b=window.document.getElementById('text2').value;
var a1=parseInt(a);
var b1=parseInt(b);
window.document.getElementById('result').innerHTML=e2s2_province_cxtj_test.AddTwo(a1,b1).value;

}
function getadd(rel)
{
//var k=rel.value;;
if(rel.value!=-1)
window.document.getElementById('text2').value=rel.value;
else
{ window.document.getElementById('text2').value="结束";}

}

function getadd1(rel)
{

window.document.getElementById('result').innerText=rel.value;
//send()
//e2s2_province_cxtj_test.js(getadd);
}

function xxx()
{

}

function Button3_onclick() {
//sendRequest("longrun.aspx");
e2s2_province_cxtj_test.js(xxx);

setInterval('send()',500);

}

function send(){
sign=sign+1;

e2s2_province_cxtj_test.Message(getadd);
//sendRequest("getmessage.aspx");
window.document.getElementById('text1').value=sign;

}

</script>
</form>
</body>
</html>

cs代码：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web.Caching;
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;
using System.Data.SqlClient;
using System.IO;
public partial class e2s2_province_cxtj_test : System.Web.UI.Page,System.Web.SessionState.IRequiresSessionState
{

protected void Page_Load(object sender, EventArgs e)
{
AjaxPro.Utility.RegisterTypeForAjax(typeof(e2s2_province_cxtj_test));
if (!IsPostBack)
{
Session["sign"] = 1;

}

}
[AjaxPro.AjaxMethod]
public int AddTwo(int firstint,int secondint)
{
return firstint + secondint;
}
protected void Button1_Click(object sender, EventArgs e)
{

js();
}

[AjaxPro.AjaxMethod(AjaxPro.HttpSessionStateRequirement.ReadWrite)]

public int Message( )
{

//Session["sign"] = ((int)Session["sign"]) + 1;
return (int)HttpContext.Current.Session["sign"];

//if(HttpContext.Current.Application[Session["sign"].ToString()]!=null)
// return (int)HttpContext.Current.Application[Session["sign"].ToString()];
//else
// return -1;
}

[AjaxPro.AjaxMethod(AjaxPro.HttpSessionStateRequirement.ReadWrite)]
public void js( )
{

Thread tr1 = new Thread(new ThreadStart(js1));
tr1.Start();

}
[AjaxPro.AjaxMethod(AjaxPro.HttpSessionStateRequirement.ReadWrite)]
private void js1()
{
//Session["sign"] = 0;
for (int i = 0; i <= 5; i++)
{
System.Threading.Thread.Sleep(500);

Session["sign"] = (int)Session["sign"] + 1;

//Application[id] = (int)Application[id] + 1;

}

}

public void start()
{

}

}