How to check session timeout before accessing session item ?
Here, I am considering that all you know how session maintained in ASP.NET Purpose : To avoid object "Object reference not set" exception that comes when trying to access session element after timeout. Prescribed Solution : It's hard to check session existence in every step. So, what we can do is just check the session existence with the help of session id and one property (IsNewSession: This property will return true if new session initiated). We can implement this check either on aspx page level or master page. protected void Page_Init(object sender, EventArgs e) { if (Context.Session!=null) { if (Session.IsNewSession) { string SessionHdr =String.Empty; if (Session.IsCookieless) SessionHdr = Request.Headers["AspFilterSessionId"]; else { SessionHdr = Request.Headers[...