3
我有一张这样的桌子。linq count by 2 conditions
Age Group
20 G1
21 G2
20 G2
21 G1
22 G3
21 G1
20 G2
21 G2
22 G3
20 G1
22 G3
我想要的结果是
Age Grp Count
20 G1 2
20 G2 2
21 G1 2
22 G2 2
22 G3 3
我不能弄清楚如何通过2组来计算
我只有1组
var thirdResultQuery=from row in secondResultQuery
group row by new {row.Grp } into g
select new
{
g.Key.Grp,
ageCount = g.Count()
};
任何想法?
哦,是啊..这是我以前的查询添加
Age
。为什么我认为这不起作用?谢谢你.. – william@william你以前的查询是什么? –
@ JW,你能回答吗? http://stackoverflow.com/questions/14351780/combining-two-datatable-and-getting-the-amount-from-second-table-by-using-linq – william