ASP. NET turns on multithreading asynchronous processing

 protected voidPage_Load (Objectsender, EventArgs e) {            if(!IsPostBack) {                Try{Thread Categorythread=NewThread (NewThreadStart (bindcategory)); Thread Newsthread=NewThread (NewThreadStart (bindnews));                    Categorythread.start ();                    Newsthread.start ();                    Categorythread.join ();                Newsthread.join (); }                Catch(Exception ex) {Response.Write (ex); }            }        }

  voidbindcategory () {SqlConnection conn=Returnsqlconn (); SqlCommand Comm=NewSqlCommand ("select * FROM [dbo]. [Channel_list]", conn); Conn.            Open (); SqlDataReader SDR=Comm.            ExecuteReader (); Gridview1.datasource=SDR;        Gridview1.databind (); }        voidbindnews () {SqlConnection conn=Returnsqlconn (); SqlCommand Comm=NewSqlCommand ("select * FROM [dbo]. [Channel_type]", conn); Conn.            Open (); SqlDataReader SDR=Comm.            ExecuteReader (); Gridview2.datasource=SDR;        Gridview2.databind (); }

 Public SqlConnection returnsqlconn ()        {            string connectionString = system.configuration.configurationmanager.connectionstrings["  ConnectionString"]. ConnectionString;            New SqlConnection (connectionString);            return cn;        }

ASP. NET turns on multithreading asynchronous processing