public CreatePageViewModelBase()
{
_catalog = new CatalogBase <T>();
_newObject = new T();
_createCommand = null; // new CreateCommandBase<User>(_catalog, _newObject);
_catalog.CatalogChanged += CatalogHasChanged;
}
public CreateCommandBase(CatalogBase <T> catalog, T newObject)
{
_catalog = catalog;
_newObject = newObject;
}