從SQL Server數據庫中選擇linq兩個對象

Question

我有以下Log表

int LogID
text Name
datetime CreationTime
text Content
int CreatorID

我嘗試獲取由具體Creator創建的所有日志

Creator creator = myDataContext.Creator.Single<Creator>(cr => cr.Name == name);
var query = (from l in myDataContext.Log
            where l.CreatorID == creator.CreatorID
            select l).ToList<Log>();

但在返回的列表中， Creator為空。

如何獲得給定Creator的日志列表？

Answer 1

您需要設置LoadOptions：

DataLoadOptions dataLoadOptions = new DataLoadOptions();
dataLoadOptions.LoadWith<Log>(l => l.Creator);
myDataContext.LoadOptions = dataLoadOptions;

Answer 2

var logs = myDataContext.Logs.Include("Creator").Where(c => c.Creator.Name == name).ToList();