Linq到实体选择和统计？

Question

我有一张桌子,你可以在下面看到

表项目

ID          Type               Sold (bit)
--------------------------------------------
1           Book                 1
2           Phone                0
3           TV                   1
4           TV                   1
5           TV                   1
6           TV                   0
7           Phone                1
8           Phone                0

我需要按类型分组,计算并计算销售的商品数量.所以我可以得到如下所示的结果

Phone 3; Sold 1
TV    4; Sold 3
Book  1; Sold 1

Answer 1

var query = from row in table
            group row.Sold by row.Type into g
            select new { Type = g.Key, Count = g.Count(), Sold = g.Count(s => s) };