public void CallAddProductPage()
 {
     var dbcontext = new WarehouseContext();
     var tab = WindowMgr.CreateTabPage("添加产品信息", "添加产品信息", false);
     var form = CallAddProductControl(null, dbcontext, (u) =>
     {
         WindowMgr.SendNotification("添加产品信息成功",NotificationLevel.Information);
         WindowMgr.CloseTabPage(tab);
         dbcontext.Dispose();
     });
     tab.Content = form;
 }