所有的TreeView控件上的事件将在所有绑定设置完成之后发生。我认为这是在一切都被绘制之前发生的，所以它可能不是你所需要的。

The Loaded event on the desired TreeView control will happen after all of the bindings have been set up. I think it happens before everything has been drawn though so it might not be exactly what you need.