BringToFront in WPF

Question

I need to bring to front a custom control in WPF.

pseudoCode

OnMouseDown()
{
    if (this.parent != null)
        this.parent.BringToFront(this);
}
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Answer 1

Here is an extension function that adds the method BringToFront functionality to all FrameworkElements that are contained in a Panel.

  public static class FrameworkElementExt
  {
    public static void BringToFront(this FrameworkElement element)
    {
      if (element == null) return;

      Panel parent = element.Parent as Panel;
      if (parent == null) return;

      var maxZ = parent.Children.OfType()
        .Where(x => x != element)
        .Select(x => Panel.GetZIndex(x))
        .Max();
      Panel.SetZIndex(element, maxZ + 1);
    }
  }