There are several ListBox to which different collections bind. And there is a panel with properties where the user can edit the selected item. Therefore, you need to make that an item can be selected only in one of the ListBox .

I thought that if I made a property in which the selected object would be stored:

 public BaseAction SelectedElement { get { return _selectedAction; } set { _selectedAction = value; OnPropertyChanged(); } }

and make a binding to SelectedItem , then everything will work, because if ListBox does not find this item in itself, then there is nothing to select.

 <ListBox ItemsSource="{Bindig UserActions}" SelectedItem="{Binding SelectedElement}" /> <ListBox ItemsSource="{Bindig GroupActions}" SelectedItem="{Binding SelectedElement}" />

But it did not work. When selecting an item in another ListBox item from the previous one does not lose the selection.

Tell me how to realize our plans?

  • @FoggyFinder, thanks! Really helped. Someday I will learn English and will be able to fully use the search myself)) Issue as an answer? - trydex

1 answer 1

The simplest solution is to use SelectedValue instead of SelectedItem

 <ListBox ItemsSource="{Bindig UserActions}" SelectedValue="{Binding SelectedElement}" /> <ListBox ItemsSource="{Bindig GroupActions}" SelectedValue="{Binding SelectedElement}" />

Taken from SO response