LinqtoSQL過濾器和order by語法

Question

我的技術人員Bretheren（和Sisteren，當然！），

我有了以下的實體LinqToSql數據模型： data model http://danimal.acsysinteractive.com/images/advisor.jpg

我需要檢索所有顧問一個特定的辦公室，按照他們在辦公室內的順序排列。我有第一部分工作加入：

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; 
} 

但是，我似乎無法包裹我的疲倦的大腦圍繞順序的條款。任何人都可以提一些建議嗎

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; 
} 

---

注：我不能給目前這個測試基於Visual Studio，但應該工作。

Answer 3

您可以通過子句這樣添加訂單：

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;