View.Ask in action 导致消息框重复显示

Question

我有以下代码来覆盖采购订单条目屏幕上的“电子邮件采购订单”操作。

代码编译并显示消息，但在选择是或否后，消息会一次又一次地显示，直到我单击 X。知道什么会导致这种情况吗？

public delegate IEnumerable NotificationDelegate(PXAdapter adapter, String notificationCD);

[PXOverride]
public IEnumerable Notification(PXAdapter adapter, String notificationCD, NotificationDelegate baseMethod)
  {
    if(Base.Document.Ask("Are you sure you want to Email the PO?", MessageButtons.YesNo)
           != WebDialogResult.Yes) return adapter.Get();
          
    return baseMethod(adapter, notificationCD);
    
    
  }

更新：

这是我最近的尝试，但仍然无法正常工作。代码编译，但我从来没有得到消息框。添加了一条跟踪消息以确认它正在命中代码：

public PXAction<POOrder> notification;

[PXUIField(DisplayName = "Notifications", Visible = false)]
[PXButton(ImageKey = PX.Web.UI.Sprite.Main.DataEntryF)]
protected virtual IEnumerable Notification(PXAdapter adapter,
    [PXString] string notificationCD)
{
    PXTrace.WriteInformation("Reached Notification Action - Notification CD = " + notificationCD + '|');
  
    if (notificationCD == "PURCHASE ORDER")
    {
      PXTrace.WriteInformation("Notification Action - If reached");
      
         if(Base.Document.Ask("Are you sure you want to Email the PO?", MessageButtons.YesNo)
   != WebDialogResult.Yes) return adapter.Get();  
    }


      return Base.notification.Press(adapter);
    
}        

Answer 1

如果消息对话框请求位于框架无法处理消息框的位置，则会发生这种情况。

尝试覆盖操作本身 (21R1)：

    public PXAction<POOrder> emailPurchaseOrder;
    [PXButton(CommitChanges = true)]
    [PXUIField(DisplayName = "Email Purchase Order", MapEnableRights = PXCacheRights.Select, MapViewRights = PXCacheRights.Select)]
    public virtual IEnumerable EmailPurchaseOrder(
        PXAdapter adapter, 
        [PXString] 
        string notificationCD = null)
    {
             if(Base.Document.Ask("Are you sure you want to Email the PO?", MessageButtons.YesNo)
       != WebDialogResult.Yes) return adapter.Get();  
         return Base.emailPurchaseOrder.Press(adapter);
    }

或者对于 20R2

    public PXAction<POOrder> notification;

    [PXUIField(DisplayName = "Notifications", Visible = false)]
    [PXButton(ImageKey = PX.Web.UI.Sprite.Main.DataEntryF)]
    protected virtual IEnumerable Notification(PXAdapter adapter,
        [PXString] string notificationCD)
    {
        if (notificationCD == "EM")
        {
             if(Base.Document.Ask("Are you sure you want to Email the PO?", MessageButtons.YesNo)
       != WebDialogResult.Yes) return adapter.Get();  
        }

          return Base.emailPurchaseOrder.Press(adapter);
        
    }