private static string CreateLimitFilterStringFromSearchRequest(SearchRequest searchRequest)
{
IEnumerable <IGrouping <FilterCategoryId, Filter> > queryFiltersByCategory =
from f in searchRequest.GetActiveFilters()
group f by f.Catgegory into fcat
where fcat.Key != FilterCategoryId.author &&
fcat.Key != FilterCategoryId.subject &&
fcat.Key != FilterCategoryId.xtargets
select fcat;
List <string> cat = new List <string>();
foreach (IGrouping <FilterCategoryId, Filter> fcat in queryFiltersByCategory)
{
cat.Add(String.Format("{0}={1}", fcat.Key, String.Join("|", (from f in fcat select f.Id).ToList <string>())));
}
return(String.Join(",", cat));
}