Walking the VisualTree

This isn't all my own code but I thought it might be handy to keep track of some code that walks the VisualTree recursively and also does something with event handlers.

AddHandlers(this);
  
public void AddHandlers(DependencyObject dependencyObject)
{
  int childCount = VisualTreeHelper.GetChildrenCount(dependencyObject);
  for (int childIndex = 0; childIndex < childCount; childIndex++)
  
    DependencyObject childObject = VisualTreeHelper.GetChild(dependencyObject, childIndex);
      
    // In this example we're only interested in TextBoxes
    if (childObject is TextBox)
    {
      if ((childObject as TextBox).GetBindingExpression(TextBox.TextProperty).ParentBinding.UpdateSourceTrigger == UpdateSourceTrigger.PropertyChanged)
      {
        (childObject as TextBox).TextChanged += new TextChangedEventHandler(TextBox_TextChanged);
      }
    }
    AddHandlers(childObject);
  }
}