CRM 2011- LINQ查詢加盟帳戶，案例和活動實體

Question

我嘗試使用帳戶，案例和活動的實體做出如下查詢：

*var findCases = 
from a in context.AccountSet 
join c in context.IncidentSet 
on a.AccountId equals c.CustomerId.Id 
join p in context.ActivityPointerSet 
on c.Id equals p.RegardingObjectId.Id 
select new 
{ 
TicketNumber = c.TicketNumber, 
IncidentId = c.IncidentId, 
CreatedOn = c.CreatedOn, 
StateCode = c.StateCode, 
AccountName = a.Name 
};* 

此查詢的執行提供了錯誤：

AttributeFrom和AttributeTo必須既可以是既指定又可以是ommited。你不能只傳遞一個或另一個。 AttributeFrom：，AttributeTo：aboutobjectid

任何建議，將不勝感激。

問候。 拉杜Antonache

Answer 1

取下查詢CasesForAccount ..

*var findCases = 
    from a in context.AccountSet 
    join c in context.IncidentSet 
    on a.AccountId equals c.CustomerId.Id 
    join p in context.ActivityPointerSet 
    on c.Id equals p.RegardingObjectId.Id 
    select new 
    { 
    TicketNumber = c.TicketNumber, 
    IncidentId = c.IncidentId, 
    CreatedOn = c.CreatedOn, 
    StateCode = c.StateCode, 
    AccountName = a.Name 
    };*