public ActionResult Add(tb_command_model model)
 {
     return this.Visit(Core.EnumUserRole.Admin, () =>
     {
         tb_command_dal dal = new tb_command_dal();
         using (DbConn PubConn = DbConfig.CreateConn(Config.TaskConnectString))
         {
             PubConn.Open();
             model.commandcreatetime = DateTime.Now;
             dal.Add(PubConn, model);
         }
         return RedirectToAction("index");
     });
 }