Binding a variable inside a viewmodel to a different variable in another viewmodel
问题 I'm implementing a WPF application using the MVVM pattern. The application is basically a communications panel (comms panel) with control widgets laid on top of it (e.g., dial pads, intercom lines, etc). The control widgets have also been implemented using the MVVM pattern, as this allows us to easily test them on an individual basis. I have this "dial pad" control widget, which exposes a DialedNumber public field in its view model: public string DialedNumber { get { return _dialPadModel