怎么用linq按照id分组查到name有相同时，c#语法返回false

只写出这样了

var sameSJ = from r in iw
group r by new
{
Id= r.Field("ads_id")
}
into g
select new { g.Key.Id, Count = g.Count() };

 var sameSJ = from r in iw
group r by  r.Field("ads_id")
into g
select new { g.Key, Count = g.Count() };