|zyciis| 为什么我在进程中的Session赋的值勤没有效果呢， 急 谢谢

[zyciis320]

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

namespace web
{
    public partial class WebForm5 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void tmUpdate_Tick(object sender, EventArgs e)
        {
            if (Session[Session.SessionID] != null)
            {
                TextBox1.Text = Session[Session.SessionID].ToString();
                if (TextBox1.Text == "100")
                {
                    Session.Remove(Session.SessionID);
                    tmUpdate.Enabled = false;
                }
            }

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            //Session[Request.Url.ToString()] = DateTime.Now;

            //这里是启动多线程
            System.Threading.Thread NewTh = new System.Threading.Thread(new System.Threading.ParameterizedThreadStart(Update));
            //System.Threading.Thread NewTh = new System.Threading.Thread(new System.Threading.ThreadStart(Update));
            NewTh.SetApartmentState(System.Threading.ApartmentState.STA);
            NewTh.Start(Session);
            tmUpdate.Enabled = true;
            //while (NewTh.ThreadState == System.Threading.ThreadState.Running)
            //{
            //}
        }

        void Update(Object _Session)
        {
            //System.Web.HttpContext.Current.Session["1"] = DateTime.Now;
            System.Web.SessionState.HttpSessionState session = (System.Web.SessionState.HttpSessionState)_Session;
            session[session.SessionID] = "10";
            System.Threading.Thread.Sleep(3000);
            Session[session.SessionID] = "30";
            System.Threading.Thread.Sleep(3000);
            Session[session.SessionID] = "50";
            System.Threading.Thread.Sleep(3000);
            Session[session.SessionID] = "80";
            System.Threading.Thread.Sleep(3000);
            Session[session.SessionID] = "100";
            System.Threading.Thread.Sleep(3000);
        }
    }
}

因为我在进程里面怎么取Session都为null
所以我就把Session传进来，
但是这样的话在线程Update中对Session进行赋值后
在TImer中根本就取不到他的值

这是怎么回事啊。。

谢谢

[itcrazyman]

mark up 帮顶

[zzxap]

多线程是访问不到Session的. 采用Cache解决.

[cpp2017]

可以取到

[cpp2017]

protected void Button1_Click(object sender, EventArgs e)
{
//Session[Request.Url.ToString()] = DateTime.Now;

Session[Session.SessionID] = "123214444444444";
//这里是启动多线程
System.Threading.Thread NewTh = new System.Threading.Thread(new System.Threading.ParameterizedThreadStart(Update));
//System.Threading.Thread NewTh = new System.Threading.Thread(new System.Threading.ThreadStart(Update));
NewTh.SetApartmentState(System.Threading.ApartmentState.STA);
NewTh.Start(Session);

//while (NewTh.ThreadState == System.Threading.ThreadState.Running)
//{
//}
}

void Update(Object _Session)
{
//System.Web.HttpContext.Current.Session["1"] = DateTime.Now;
System.Web.SessionState.HttpSessionState session = (System.Web.SessionState.HttpSessionState)_Session;
if (session[session.SessionID] != null)
{
System.IO.StreamWriter sw = new System.IO.StreamWriter(Server.MapPath("aa.txt"));
sw.Write(session[session.SessionID].ToString());
sw.Close();
}
//session[session.SessionID] = "10";
//System.Threading.Thread.Sleep(3000);
//Session[session.SessionID] = "30";
//System.Threading.Thread.Sleep(3000);
//Session[session.SessionID] = "50";
//System.Threading.Thread.Sleep(3000);
//Session[session.SessionID] = "80";
//System.Threading.Thread.Sleep(3000);
//Session[session.SessionID] = "100";
//System.Threading.Thread.Sleep(3000);
}

[cpp2017]

不传参也是可以取到

void Update(Object _Session)
{
//System.Web.HttpContext.Current.Session["1"] = DateTime.Now;
// System.Web.SessionState.HttpSessionState session = (System.Web.SessionState.HttpSessionState)_Session;
if (Session[Session.SessionID] != null)
{
System.IO.StreamWriter sw = new System.IO.StreamWriter(Server.MapPath("aa.txt"));
sw.Write(Session[Session.SessionID].ToString());
sw.Close();
}

[云想慕尘]

up