private void RetrieveCategories()
{
var tags = _categoryScraper.GetAllCategories<Tag>();
var shows = _categoryScraper.GetAllCategories<Show>();
var series = _categoryScraper.GetAllCategories<Series>();
if (_categories != null)
{
SetIsEnabled(tags, _categories.Tags);
SetIsEnabled(shows, _categories.Shows);
SetIsEnabled(series, _categories.Series);
}
_categories = new Categories(tags, shows, series);
}