온라인 인원 통계

<%@ Import Namespace="System.Data"%>

void Application_Start(object sender, EventArgs e) 

    {

       //             ,           

        try

        {



            DataTable userTable = new DataTable();

            userTable.Columns.Add("SessionID");

            userTable.Columns.Add("UserIP");

            userTable.Columns.Add("Browser");

            userTable.Columns.Add("OSName");



            userTable.AcceptChanges();

            Application.Lock();

            Application["OnLineusers"] = userTable;

            Application.UnLock();

    }

 

    void Session_Start(object sender, EventArgs e) 

    {

        //            ，        Session_Start  ， Session_Start          ，    ,
        //Application["OnLineusers"]          


        string sessionid = Session.SessionID;

        string userIP = Request.UserHostAddress;

        HttpBrowserCapabilities bc = Request.Browser;

        string osName = bc.Platform;

        string Browser=bc.Type;



        DataTable userTable = (DataTable)Application["OnLineusers"];

        if (userTable == null) return;

        DataRow[] curRow=userTable.Select("SessionId='"+sessionid+"'");

        if (curRow.Length == 0)

        {

            DataRow newRow = userTable.NewRow();

            newRow["SessionID"] = sessionid;

            newRow[1] = userIP;

            newRow[2] = Browser;

            newRow[3] = osName;

            userTable.Rows.Add(newRow);

            userTable.AcceptChanges();

            Application.Lock();

            Application["OnLineusers"] = userTable;

            Application.UnLock();

             

        }

        

      }

   //       Session
　　void Session_End(object sender, EventArgs e)

    {

        Hashtable onlineuserhash = (Hashtable)Application["OnLineusers"];

        onlineuserhash.Remove(Request.UserHostAddress);



        string sessionid = Session.SessionID;

        DataTable usertable = (DataTable)Application["OnLineusers"];

        if (usertable == null)

        { return; }

        foreach (DataRow row in usertable.Select("SessionID='" + sessionid + "'")) 

        {

            usertable.Rows.Remove(row); 

        }

        usertable.AcceptChanges();

        Application.Lock();

        Application["OnLineusers"] = usertable;

        Application.UnLock();

    }

일반적인 해결 방법: 프로젝트 아래에 txt 파일을 만들어서 온라인 인원수를 저장합니다.SessionStart,Session_end txt 작업