public static int IndexOf <TElement>(this DataServiceQuery <TElement> q, FilterParameterCollection keyCondition)
{
var query = q.AddQueryOption("rf.indexof", HttpUtility.UrlEncode(keyCondition.JsonSerialize(), Encoding.GetEncoding(1251)));
var response = query.Execute() as QueryOperationResponse <TElement>;
int idx = -1;
int.TryParse(response.Headers.FirstOrDefault(h => h.Key == "Index-Of-Model").Value, out idx);
return(idx);
}
public static DataServiceQuery <TElement> AddFilters <TElement>(this DataServiceQuery <TElement> q, FilterParameterCollection fc)
{
return(q.AddQueryOption("rf.filter", HttpUtility.UrlEncode(fc.JsonSerialize(), Encoding.GetEncoding(1251))));
}