选择Linq group by的特定列

Question

我有一个嵌套的ListView.有点像这样:http:
//mattberseth.com/blog/2008/01/building_a_grouping_grid_with.html

以下Linq查询:

var query = (from c in context.customer_order
             where c.id > 8000
             group c by c.person_id into cgroup
             select new { cgroup.Key, Orders = cgroup });

我只想在cgroup项中加载一些特定的列.就像通常使用SQL中的"select"语句一样.那可能吗？我在表中有一个blob,如果包含它,它需要很长时间才能加载.

Answer 1

var query = (from c in context.customer_order
             where c.id > 8000
             group c by c.person_id into cgroup
             select new { cgroup.Key, Orders =
                    from item in cgroup
                    select new { item.Foo, item.Bar }
             });