Report a Silverlight Bug

Re: Can only bind ItemsSource to IEnumerable in XAML

atm_grifter — Fri, 25 Jul 2008 14:09:42 GMT

Yes, this is the workaround I've decided to use. Thanks for the response!

Re: Can only bind ItemsSource to IEnumerable in XAML

Yi-Lun Luo - MSFT — Fri, 25 Jul 2008 05:51:34 GMT

Hello, thanks for reporting this issue. It looks similar to a known problem. TemplateBinding doesn't work for collection types. Note this only affects TemplateBinding. In a normal binding it should work fine. The data source can be any kind of collections. So a workaround is:

public override void OnApplyTemplate()
{
base.OnApplyTemplate();
ItemsControl ic = this.GetTemplateChild("ic") as ItemsControl;
if (ic != null)
{
Binding b = new Binding("TestCollection");
b.Source = this;
ic.SetBinding(ItemsControl.ItemsSourceProperty, b);
}
}

Can only bind ItemsSource to IEnumerable in XAML

atm_grifter — Wed, 23 Jul 2008 20:38:28 GMT

Since no one has responded to the following thread in the Controls forum, http://silverlight.net/forums/t/20873.aspx, I figured I'd go ahead and report this behavior as a bug.

To summarize in Silverlight you are not able to bind the ItemsSource of an ItemsControl to a collection that is any type other than IEnumerable, including types that implement IEnumerable. So, you can't bind to List<T> or ObservableCollection<T>. This seems like a glaring omission.