Auto redirect to login page when Session is expired

Auto redirect to login page on session timeout. Just added the below method in you page. Note: This code is reference from other site.

private void CheckSessionTimeout()         {             string msgSession = "Warning: Within next 3 minutes, if you do not do anything, our system will redirect to the login page. Please save changed data.";             //time to remind, 3 minutes before session ends             int int_MilliSecondsTimeReminder = (this.Session.Timeout * 60000) - 3 * 60000;             //time to redirect, 5 milliseconds before session ends             int int_MilliSecondsTimeOut = (this.Session.Timeout * 60000) - 5;             string str_Script = @"                     var myTimeReminder, myTimeOut;                     clearTimeout(myTimeReminder);                     clearTimeout(myTimeOut); " +                     "var sessionTimeReminder = " +                       int_MilliSecondsTimeReminder.ToString() + "; " +                     "var sessionTimeout = " + int_MilliSecondsTimeOut.ToString() + ";" +                     "function doReminder(){ alert('" + msgSession + "'); }" +                     "function doRedirect(){ window.location.href='login.aspx'; }" + @"                     myTimeReminder=setTimeout('doReminder()', sessionTimeReminder);                     myTimeOut=setTimeout('doRedirect()', sessionTimeout); ";              ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(),                    "CheckSessionOut", str_Script, true);         } protected void Page_Load(object sender, EventArgs e) {  this.CheckSessionTimeout(); }