Question

I open a modal dialog showing two combo boxes. The first one is filled with a list by code. Whenenver the user selects an entry, the second combo box needs to change its underlying list. For example: the first box shows all webcams attached to the computer and the second box shows the available resolution/streaming capabilities of the selected webcam.

This one is done with System.Windows.Forms but what’s the best way to do this in Wpf and XAML?

Answer 1

Bind the ItemsSource of the first combo box to a list of available cameras. The objects should have a property of available resolutions. Bind the SelectedItem to a property of the view model. Then you can bind the ItemsSource property of the second combobox to SelectedCamera.AvailableResolutions or similar.