在背后的代码中的DataTemplate中找到WPF元素

我在WPF程序中经常使用此功能来查找子元素：

public IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject{   if (depObj != null)   {       for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)       {DependencyObject child = VisualTreeHelper.GetChild(depObj, i);if (child != null && child is T)    yield return (T)child;foreach (T childOfChild in FindVisualChildren<T>(child))    yield return childOfChild;       }   }}

用法：

foreach (var rectangle in FindVisualChildren<Rectangle>(this)){  if (rectangle.Name == "rectangleBarChart")  {      }}