recursive-databinding

问题 I am developing a simple exercise and want to know if there is a way to bind to the opposite of another element using only XAML. For example. I have two buttons on a form, Start and Stop perhaps for a timer. I dont want both to be enables at the same time. When the program starts, the stop button should be disabled. When the start button is clicked, it should be disabled and the stop button enabled. Then vice versa until the user quits. I know there are better controls for exactly this, and I

问题 This is related to another question of mine, and unfortunately I'm having a difficult time summarizing the issue in my Title--so please bear with me. I've created a databindable class called Folder which implements a ITreeItem interface and inherits from BindingList<ITreeItem> . I have a second class, TreeLeaf , which is a leaf in the tree, a terminus that can't contain more child items. The intent is to be able to databind to a Folder and have databinding walk the tree of folders (and n