SQL转LINQ问题

SQL code

SELECT ExHotelCode FROM hotel_HotelLinkRelation hhlr GROUP BY ExHotelCode,hhlr.GDSCode

C# code

 var query = from p in db.hotel_HotelLinkRelation                group p by p new {ExHotelCode=p.ExHotelCode,GDSCode=p.GDSCode} into g                                   select new                     {                         g.Key.ExHotelCode, g.Key.GDSCode                    };
[解决办法]
给一个linq to sql 的学习资料
http://www.cnblogs.com/lovecherry/archive/2007/08/13/853754.html
[解决办法]
改正一下
C# code
public static List<GDSHotelCode> GDSHotelCode()  {  HotelDataContext hotelData = new HotelDataContext();  List<GDSHotelCode> GDSHotelCodelList= (from p in hotelData.hotel_HotelLinkRelation  group p by new { ExHotelCode = p.ExHotelCode, GDSCode = p.GDSCode } into g  select new GDSHotelCode()  {    g.Key.ExHotelCode,    g.Key.GDSCode  }).ToList();  return GDSHotelCodelList;  }
[解决办法]
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引用:
改正一下

C# code

public static List<GDSHotelCode> GDSHotelCode()
{
HotelDataContext hotelData = new HotelDataContext();

List<GDSHotelCode> GDSHotelCodelList= (from p in hotelData……