Question

If I have two objects, one being the list of items, and the other having a property storing the selected item of the other list, is it possible to update the selected item through binding in WPF?

Lets say I have these two data structures:

public class MyDataList {     public ObservableCollection<Guid> Data { get; set; } }  public class MyDataStructure {     public Guid ChosenItem { get; set; } } 

Is it possible to bind a Listbox to an instance of both objects so that the ChosenItem property gets set by the selected item of the ListBox?

EDIT: To make things a bit clearer, there might be many instances of MyDataStructure, each with a chosen item from MyDataList. The data list is common to all the instances, and I need a way to select an item and store that selection in the MyDataStructure.

Answer 1

I believe you should be able to do this (make sure to declare the local namespace):

<Window.Resources>     <local:MyDataStructure x:Key='mds1' /> </Window.Resources>     <ListBox ItemsSource='{Binding Data}' SelectedValue='{Binding Source={StaticResource mds1} Path=ChosenItem}'/>