private void btnCancel_Click(object sender, RoutedEventArgs e)
        {
            {
                int nSesID = this.Process.Session.Session_ID;

                string stmt =

                    string.Format(
                        " exec Sp_FileAdding_Cancel_Session {0} ", nSesID);

                DataHelper.ExecuteSqlNonQuery(stmt);
            }



            Page p = new Page_Main();

            this.NavigationService.Navigate(p);
        }
        private void btnHome_Click(object sender, RoutedEventArgs e)
        {
            Page p = new Page_Main();

            this.NavigationService.Navigate(p);
        }