title: how to prevent autoselection of first item in GridView on databind?
body: <p>When I databind my GridView to an ObservableCollection, the first item of the collection is automatically selected.  The <code>SelectionMode</code> property of the GridView is set to <code>multiple</code>. Is there some way to prevent this auto-selection?  Or on what event should I listen so that I can reset the <code>SelectedIndex</code> of the GridView back to -1? </p>