C # simulates a GET request example to demonstrate session state.

To create a console program:

usingSystem;usingSystem.Collections.Generic;usingSystem.IO;usingSystem.IO.Compression;usingSystem.Linq;usingSystem.Net;usingSystem.Net.Sockets;usingSystem.Runtime.Remoting.Messaging;usingSystem.Text;usingSystem.Text.RegularExpressions;usingSystem.Threading;usingSystem.Threading.Tasks;namespaceconsoleapplication1{classProgram {Static voidMain (string[] args) {            stringCOOKIESTR =string.            Empty; stringresult ="";  for(inti =0; I <10000; i++) {cookiestr=string. Empty;//Clear Cookies every time SessionIDresult = Simulatedget ("http://localhost:1342/%E5%85%A8%E5%B1%80%E5%BA%94%E7%94%A8%E7%A8%8B%E5%BA%8F%E5%8F%98%E9%87%8F%E7%BB%9F%E8 %ae%a1%e5%9c%a8%e7%ba%bf%e4%ba%ba%e6%95%b0.aspx",refcookiestr); Result= result. Replace ("\ r \ n","\ r"); string[] html = result. Split ('\ r'); Console.WriteLine (html[0]); Thread.Sleep (Ten);        } console.readkey (); }        Private Static stringSimulatedget (stringUrlref stringcookiestr) {            //get/newsadmin/login.aspx http/1.1//Host:localhost//user-agent:mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) gecko/20100101 firefox/33.0//accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8//accept-language:zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3//Accept-encoding:gzip, deflate//connection:keep-alive            stringresult =""; WebClient Context=NewWebClient (); Context. Headers.add ("Host:localhost"); Context. Headers.add ("user-agent:mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) gecko/20100101 firefox/33.0"); Context. Headers.add ("accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"); Context. Headers.add ("accept-language:zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3"); Context. Headers.add ("Content-type:multipart/form-data"); Context. Headers.add ("Accept-encoding:gzip, deflate"); Context. Headers.add ("Cache-control:no-cache");//connection:keep-alive            if(!string. IsNullOrEmpty (cookiestr)) {context. Headers.add (COOKIESTR); //Add the cookie to the request header. } context. Encoding=Encoding.UTF8; Result=context.            Downloadstring (URL); if(string. IsNullOrEmpty (cookiestr)) {cookiestr= Context. responseheaders["Set-cookie"].                ToString (); Cookiestr=GetCookie (COOKIESTR); }            returnresult; }        Private Static stringGetCookie (stringcookiestr) {            stringresult =""; string[] MyArray = Cookiestr.split (','); if(Myarray.count () >0) {result="Cookies:"; foreach(varStrinchMyArray) {                    string[] Cookiearray = str. Split (';'); Result+ = cookiearray[0].                    Trim (); Result+="; "; } result= result. Substring (0, result. Length-2); }            returnresult; }        }}

Global.asax Session_Start Events

Count the number of people online.

protected voidSession_Start (Objectsender, EventArgs e)            {Response.Write (Session.SessionID);            Application.Lock (); intnum = application["onlineusers"] ==NULL?0: Convert.ToInt32 (application["onlineusers"]); Num++; application["onlineusers"] =num;        Application.UnLock (); }

The ASPX access page shows the number of people online in the background Page_Load event.

protected void Page_Load (object  sender, EventArgs e)        {            Response.Write (" current online number:" + application["onlineusers"]. ToString ());                 }

Maintain session state when there is sessionid in the cookie.

When the Cookie:sessionid is emptied each time, a new session is recreated.

C # simulates a GET request example to demonstrate session state.