public void RemoveChild(ServerTreeItemViewModel child)
{
if (Children.Contains(child))
{
child.Parent = null;
Children.Remove(child);
}
}
public void AddChild(ServerTreeItemViewModel child)
{
if (!Children.Contains(child))
{
child.Parent = this;
Children.Add(child);
}
}
private void OnChildrenChanged(object sender, NotifyCollectionChangedEventArgs e)
{
// Note: This section does not account for multiple items being involved in change operations.
// Note: This section does not account for the replace operation.
if (e.Action == NotifyCollectionChangedAction.Add)
{
ServerTreeItemViewModel child = (ServerTreeItemViewModel)e.NewItems[0];
child.Parent = this;
}
else if (e.Action == NotifyCollectionChangedAction.Remove)
{
ServerTreeItemViewModel child = (ServerTreeItemViewModel)e.OldItems[0];
if (child.Parent == this)
{
child.Parent = null;
}
}
}