public virtual void Add(HierarchicalBaseViewModel child)
{
if (child.Parent != null)
{
child.Parent.Remove(child);
}
child.Parent = this;
if (!Children.Contains(child))
{
Children.AddOnDispatcher(child);
}
Children.SortBy(c => c);
}
public virtual void Remove(HierarchicalBaseViewModel child)
{
child.Parent = null;
Children.RemoveOnDispatcher(child);
}