private void OnDrop(object sender, DragEventArgs e)
{
GridView gw = sender as GridView;
string name = gw.Name;
SprintBacklogVM vm = (SprintBacklogVM)this.DataContext;
vm.ChangeState(name);
}
private void StartDrag(object sender, DragItemsStartingEventArgs e)
{
SprintBacklogVM vm = (SprintBacklogVM)this.DataContext;
vm.DragStory = (Story)e.Items[0];
}