protected IQueryable <T> FilterTypes(IQueryable <T> source)
{
IEnumerable <ProductItemType> selectedTypeValues = ProductItemType.Where(type => type.Value).ToDictionary(pair => pair.Key, pair => pair.Value).Keys;
if (selectedTypeValues.Any())
{
source = source.Where(p => selectedTypeValues.Contains(p.ProductItemType));
}
return(source);
}
