如何将ObservableCollections绑定到ItemsSource？

DataContextDataContext context1 = new DataContextDataContext();
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new ObservableCollection<MyObject>();
        RadGridView1.Filtered+=new EventHandler<GridViewFilteredEventArgs>(RadGridView1_Filtered);
        ObservableCollection<MyObject> _MyObject = new ObservableCollection<MyObject>();
        foreach (var p in context1.Students)
        {
            _MyObject.Add(new MyObject { ID = p.StudentID, Name = p.StudentFN });
        }
    }

    void RadGridView1_Filtered(object sender, GridViewFilteredEventArgs e)
    {
        RadGridView1.ItemsSource = ObservableCollection<MyObject>();
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {

    }
}

public class MyObject
{
    public int ID { get; set; }
    public string Name { get; set; }
}
DataContextDataContext context1 = new DataConte