public static DependencyObject FindAncestorByType(DependencyObject element, Type type, bool specificTypeOnly)
{
if (element == null)
{
return(null);
}
if (specificTypeOnly ? (element.GetType() == type)
: (element.GetType() == type) || (element.GetType().IsSubclassOf(type)))
{
return(element);
}
return(VisualTreeHelperEx.FindAncestorByType(VisualTreeHelper.GetParent(element), type, specificTypeOnly));
}
private static void TargetUiElement_Click(object sender, RoutedEventArgs e)
{
var targetUiElement = (Button)sender;
DependencyObject parentTabItem =
VisualTreeHelperEx.FindAncestorByType(targetUiElement, typeof(TabItem), true);
if (parentTabItem != null)
{
var tabItem = parentTabItem as TabItem;
DependencyObject parentTabControl = VisualTreeHelperEx.FindAncestorByType(tabItem, typeof(TabControl), true);
if (parentTabControl is TabControl tabControl)
{
tabControl.Items.Remove(tabItem);
}
}
}
public static T FindAncestorByType <T>(DependencyObject depObj) where T : DependencyObject
{
if (depObj == null)
{
return(default(T));
}
if (depObj is T)
{
return((T)depObj);
}
T parent = default(T);
parent = VisualTreeHelperEx.FindAncestorByType <T>(VisualTreeHelper.GetParent(depObj));
return(parent);
}