private List<MenuBE> GetMenuProject()
 {
     var bo = new MenuLeftBO();
     var res = new List<MenuBE>();
     switch (Tab)
     {
         case 1:
         case 3:
             {
                 List<MenuBE> menus = bo.GetMenuProject();
                 res = menus.Where(t => t.Type == Type).ToList();
             }
             break;
         case 2:
             {
                 List<MenuBE> menus = bo.GetMenuConsultant();
                 res = menus.Where(t => t.SubType == 2 || t.SubType == Type).ToList();
             }
             break;
         case 0:
             res = bo.GetMenuContact();
             break;
     }
     return res;
 }
 private string DeleteMenu(int id)
 {
     var bo = new MenuLeftBO();
     int res = bo.DeleteMenuLef(id);
     return Utils.ConvertToJsonString(res);
 }
 private string GetMenuById(int id, int type)
 {
     var bo = new MenuLeftBO();
     var res = bo.GetMenuLeftById(id, type);
     return Utils.ConvertToJsonString(res);
 }
 private string CreateMenu(MenuLeft menuLeft)
 {
     var bo = new MenuLeftBO();
     int res = bo.AddMenuLef(menuLeft);
     return Utils.ConvertToJsonString(res);
 }
 private List<MenuLeft> GetByType(int type)
 {
     var bo = new MenuLeftBO();
     var res = bo.GetMenuLeft(type);
     return res;
 }