XAML Binding to a CollectionViewSource property on a ViewModel
binding, wpf, xaml
Solution
If you are using `CollectionViewSource` you need to bind `ItemsSource` to `ProjectList.View` instead of `ProjectList`. That should solve your problem.
Problem
I have a simple ViewModel like: ``` public class MainViewModel { ObservableCollection<Project> _projects; public MainViewModel() { // Fill _projects from DB here... ProjectList.Source = _projects; ProjectList.Filter = ...; } public CollectionViewSource ProjectList { get; set; } } ``` I set the window's DataContext to a new instance of that ViewModel in the constructor: ``` public MainWindow() { this.DataContext = new MainViewModel(); } ``` Then in the Xaml I am attempting to bind the ItemsSource of a ListBox to that ProjectList property. Binding just ItemsSource like so doesn't work: ``` <ListBox ItemsSource="{Binding ProjectList}" ItemTemplate="..." /> ``` But if I first rebase the DataContext this works: ``` <ListBox DataContext="{Binding ProjectList}" ItemsSource="{Binding}" ItemTemplate="..." /> ``` Shouldn't the first method work properly? What might I be doing wrong?