title: Xamarin CollectionViewSource.SortDescriptions
body: <p>Im looking at porting a wpf application over to Xamarin.Forms</p>
  
  <p>The WPF application contains a ListView which has been sorted using, CollectionViewSource.SortDescription</p>
  
  <p>Is there an equivalent to the above available in Xamarin.Forms.
  I have a ListView thats bound to a ObservableCollection. Ideally id like to be able to sort the list in a similar manor</p>