为什么 FrameworkElement.VisualChildrenCount 受到保护？
这是我的问题的背景：
- 我想知道特定的 System.Windows.Documents.AdornerLayer 是否为空。
- “好的，我将检查
myAdornerLayer.VisualChildrenCount > 0。” - “哦，好吧，
AdornerLayer.VisualChildrenCount属性受到保护。” （它会覆盖同样受保护的System.Windows.FrameworkElement.VisualChildrenCount。） - “嗯...这不会阻止我。我只需访问
myAdornerLayer.VisualChildrenCount通过反思。” - “另一方面，这样做可能会产生某种不良的副作用。也许
VisualChildrenCount受到保护是有原因的。我会询问 Stack Overflow”。
如果使用反射不是一个好主意，您是否有其他方法来确定 AdornerLayer 是否为空？
Here's the background for my question:
- I would like to know if a particular
System.Windows.Documents.AdornerLayeris empty or not. - "OK, I'll make the check
myAdornerLayer.VisualChildrenCount > 0." - "Oh well, the property
AdornerLayer.VisualChildrenCountis protected." (It overridesSystem.Windows.FrameworkElement.VisualChildrenCountwhich is also protected.) - "Hm... That won't stop me. I'll just access
myAdornerLayer.VisualChildrenCountvia reflection." - "On the other hand, maybe doing this will have some sort of bad side effect. Maybe
VisualChildrenCounthas been protected for a reason. I'll ask Stack Overflow".
If using reflection is a bad idea, do you have a suggestion for another way of finding out if an AdornerLayer is empty or not?
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有一个
Visual Tree Helper类，就是为此目的而创建的。http:// /bing.com/search?q=visualTreeHelper
There is
Visual Tree Helperclass, that was made for this purpose..http://bing.com/search?q=visualTreeHelper