private void UpdateErrors()
{
_errors.Clear();
foreach (var current in new List <WeakReference <FrameworkElement> >(_controls))
{
FrameworkElement control;
if (!current.TryGetTarget(out control))
{
_controls.Remove(current);
continue;
}
foreach (var err in System.Windows.Controls.Validation.GetErrors(control))
{
_errors.Add(err);
}
}
foreach (var current in new List <WeakReference <ValidationFrame> >(_childFrames))
{
ValidationFrame frame;
if (!current.TryGetTarget(out frame))
{
_childFrames.Remove(current);
continue;
}
foreach (var err in frame.Errors)
{
_errors.Add(err);
}
}
if (_parentFrame != null)
{
_parentFrame.UpdateErrors();
}
}
