WPF Binding Question

Question

Here's the situation:

Using WPF

I have an object set to the DataContext of a window. A listview on this window is bound to display a list of users which corresponds to a property in the DataContext(Users).

Whenever a A User is chosen I set the CurrentDisplayedUser to this user to the selected object.

I have another list box that's supposed to display Alerts by this user. This is accessible through User.Alerts.

My problem is that whenever I update the CurrentDisplayedUser property the list view that is bound to the CurrentDisplayedUser.Alerts is not updated.

Thanks in advance! I hope I have provided adequate information.

Answer 1

Did you use an ObservableCollection for your list of users?

Answer 2

Have you tried directly connecting the two lists using element binding rather than relying on an intermediary "CurrentDisplayedUser" property?

<Window ...>
    <StackPanel>
        <ListView x:Name="userList" ItemsSource="{Binding Users}">
           ...
        </ListView>

        <!-- display selected user here -->
        <ContentControl Content="{Binding SelectedItem,ElementName=userList />

        <ListView ItemsSource="{Binding SelectedItem.Alerts,ElementName=userList>
            ...
        </ListView>
    </StackPanel>
</Window>