private void SetRootItem(object newValue)
{
if (RootItem != null)
{
RootItem.Owner = null;
RootItem.ClearValue(ViewItem.ItemsSourceProperty);
ItemsContainer.Children.Remove(RootItem);
}
if (ItemsContainer != null)
{
RootItem = new ViewItem()
{
Content = newValue,
ContentTemplate = ItemTemplate,
Owner = this
};
if (ItemTemplate is HierarchicalDataTemplate)
{
var binding = (ItemTemplate as HierarchicalDataTemplate).ItemsSource;
BindingOperations.SetBinding(RootItem, ViewItem.ItemsSourceProperty, binding);
}
ItemsContainer.Children.Add(RootItem);
}
}