protected void GridView2_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     if (e.CommandName == "Delete")
     {
         try
         {
             string file_id = Convert.ToString(e.CommandArgument);
             bl.File_id = file_id;
             if (Session["User_Id"] != null)
             {
                 bl.User_id = Session["User_Id"].ToString();
             }
             else
             {
                 if (Request.Cookies["User_Id"] != null)
                 {
                     Session["User_Id"] = Request.Cookies["User_Id"].Value;
                     bl.User_id         = Request.Cookies["User_Id"].Value;
                 }
             }
             rb = dl.delete_file_upload(bl);
             if (rb.status == true)
             {
                 Utilities.MessageBox_UpdatePanel(UpdatePanel2, "Deleted Successfully");
             }
             else
             {
                 Utilities.MessageBox_UpdatePanel(UpdatePanel2, "Not Deleted ");
             }
             GetFileUpload_report();
         }
         catch (NullReferenceException)
         {
             //   Utilities.MessageBox_UpdatePanel_Redirect(UpdatePanel2, "Your Session Has Expired Please Login Again", "../Logout.aspx");
         }
     }
 }