private void RemoveDestination_Click(object sender, RoutedEventArgs e)
{
var ds = DeviceListBox.SelectedItem as DeviceSettings;
ds.Destinations.RemoveAt(DestinationListBox.SelectedIndex);
DestinationListBox.Focus();
}
private void AddDestination_Click(object sender, RoutedEventArgs e)
{
var ds = DeviceListBox.SelectedItem as DeviceSettings;
ds.Destinations.Add(new Destination());
DestinationListBox.SelectedIndex = ds.Destinations.Count - 1;
DestinationListBox.Focus();
}