Inheritance: System.Windows.Controls.UserControl
 public void IsEnabled__False(DelegateCommandTestControl control)
 {
     viewModel.IsEnabled = false;
     Debug.WriteLine("IsEnabled: " + viewModel.IsEnabled);
 }
 public void Initialize(DelegateCommandTestControl control)
 {
     viewModel = new ViewModel();
     control.DataContext = viewModel;
 }