Filtro LinqtoSQL e ordine per sintassi

Question

My Techie Bretheren (e Sisteren, ovviamente!),

Ho un modello di dati LinqToSql che ha le seguenti entità: modello di dati http://danimal.acsysinteractive.com/images/advisor.jpg

Devo recuperare tutti i consulenti per un ufficio specifico, ordinati in base alla loro sequenza all'interno dell'ufficio. Ho la prima parte che lavora con un join:

public static List<Advisor>GetOfficeEmployees(int OfficeID)
{
    List<Advisor> lstAdvisors = null;
    using (AdvisorDataModelDataContext _context = new AdvisorDataModelDataContext())
    {
        var advisors = from adv in _context.Advisors
                       join advisoroffice in _context.OfficeAdvisors
                           on adv.AdvisorId equals advisoroffice.AdvisorId
                       where advisoroffice.OfficeId == OfficeID
                       select adv;

        lstAdvisors = advisors.ToList();

    }
    return lstAdvisors;
}

Tuttavia, non riesco a avvolgere il mio cervello stanco attorno alla clausola order by. Qualcuno può dare alcuni suggerimenti?

Answer 1

from adv in _context.Advisors
where adv.OfficeAdvisor.Any(off => off.OfficeId == officeID)
order adv by adv.OfficeAdvisor.First(off => off.OfficeId = officeID).Sequence
select adv;

Answer 2

public static List<Advisor>GetOfficeEmployees(int OfficeID)
{
    List<Advisor> lstAdvisors = null;
    using (AdvisorDataModelDataContext _context = new AdvisorDataModelDataContext())
    {
        var advisors = from adv in _context.Advisors
                       join advisoroffice in _context.OfficeAdvisors
                           on adv.AdvisorId equals advisoroffice.AdvisorId
                       where advisoroffice.OfficeId == OfficeID
                       group adv by adv.OfficeId into g
                       order by g.Sequence
                       select g;

        lstAdvisors = advisors.ToList();

    }
    return lstAdvisors;
}

---

Nota: non sono attualmente in grado di testarlo su Visual Studio ma dovrei funzionare.

Answer 3

Puoi aggiungere un ordine per clausola come questo:

var advisors = from adv in _context.Advisors
                  join advisoroffice in _context.OfficeAdvisors
               on adv.AdvisorId equals advisoroffice.AdvisorId
               where advisoroffice.OfficeId == OfficeID
               orderby advisoroffice.Sequence //  < -----
               select adv;