/// <summary>
/// Provides a deterministic way to create the CounterViewModel property.
/// </summary>
public static void CreateCounterViewModel()
{
if (_counterViewModel == null)
{
_counterViewModel = new CounterViewModel();
}
}
/// <summary>
/// Provides a deterministic way to delete the CounterViewModel property.
/// </summary>
public static void ClearCounterViewModel()
{
_counterViewModel.Cleanup();
_counterViewModel = null;
}