28 lines
758 B
C#
28 lines
758 B
C#
|
Is Logical Ancestor Of
|
||
|
|
|
||
|
|
using System;
|
||
|
|
using System.Collections.Generic;
|
||
|
|
using System.Linq;
|
||
|
|
using System.Text;
|
||
|
|
using System.Windows;
|
||
|
|
using System.Windows.Media;
|
||
|
|
|
||
|
|
public static class PopupHelper
|
||
|
|
{
|
||
|
|
public static bool IsLogicalAncestorOf(this UIElement ancestor, UIElement child)
|
||
|
|
{
|
||
|
|
if (child != null)
|
||
|
|
{
|
||
|
|
FrameworkElement obj = child as FrameworkElement;
|
||
|
|
while (obj != null)
|
||
|
|
{
|
||
|
|
FrameworkElement parent = VisualTreeHelper.GetParent(obj) as FrameworkElement;
|
||
|
|
obj = parent == null ? obj.Parent as FrameworkElement : parent as FrameworkElement;
|
||
|
|
if (obj == ancestor) return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|