public bool IsFavorite(string storeId, string clientId) { Guid storeGuid, clientGuid; bool isFav = false; if (Guid.TryParse(storeId, out storeGuid) && Guid.TryParse(clientId, out clientGuid)) { isFav = _StoreRepository.IsFavorite(storeGuid, clientGuid); } return(isFav); }