private void VerifyWriteAccess()
{
MetaPanel panel = _visualParent as MetaPanel;
if ((panel != null) && panel.IsDataBound)
{
throw new InvalidOperationException("Cannot modify Children collection of a data bound MetaPanel.");
}
}
private static void OnCanvasChanged(DependencyObject d,
DependencyPropertyChangedEventArgs e)
{
UIElement element = d as UIElement;
if (element != null)
{
MetaPanel parent = VisualTreeHelper.GetParent(element) as MetaPanel;
if (parent != null)
{
parent.InvalidateMeasure();
}
}
}