Redirect to login screen if session is expired in Asp.net c# (Web Form)

Follow bellow code in global.asax

protected void Application_AcquireRequestState(object sender, EventArgs e)

        {

            try

            {

                string lcReqPath = Request.Path.ToLower();

                // Session is not stable in AcquireRequestState - Use Current.Session instead.

                System.Web.SessionState.HttpSessionState curSession = HttpContext.Current.Session;

                if (lcReqPath != "/root/login.aspx"&& (curSession == null || curSession["User_Type"] == null))

                {

                    // Redirect nicely

                    Context.Server.ClearError();

                    Context.Response.AddHeader("Location", "../../root/Login.aspx");

                    Context.Response.TrySkipIisCustomErrors = true;

                    Context.Response.StatusCode = (int)System.Net.HttpStatusCode.Redirect;

                    // End now end the current request so we dont leak.

                    Context.Response.Output.Close();

                    Context.Response.End();

                    return;

                }

            }

            catch (Exception)

            {

                // todo: handle exceptions nicely!

            }

        }