private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
PlaceholderViewModel viewModel = e.NewValue as PlaceholderViewModel;
View view = null;
if (viewModel != null)
{
view = ViewsManager.LocateViewForModel(viewModel.UnderlyingViewModel);
}
if (view != null)
{
view.DisplayPanel = false;
}
Content = view;
CloneViewProperties(view);
}