/// <summary>
/// Provides a deterministic way to create the ArchiveViewModel property.
/// </summary>
public static void CreateArchiveViewModel()
{
if (_ArchiveViewModel == null)
{
_ArchiveViewModel = new ArchiveViewModel();
}
}
/// <summary>
/// Provides a deterministic way to delete the ArchiveViewModel property.
/// </summary>
public static void ClearArchiveViewModel()
{
_ArchiveViewModel.Cleanup();
_ArchiveViewModel = null;
}