在LINQ中將IGrouping轉換為IQueryable

Question

if (model.ConnectedToOtherProfilesId != 0)
{
      var fooGroup = fans.GroupBy(x => x.FanId)
                         .Where(x => x.Any(z => z.ProfileId == model.ConnectedToOtherProfilesId));

      var fooGroup2 = fooGroup.Where(grp => grp.Count() > 1);
}

我需要將fooGroup2 [ IQueryable<IGrouping<int,PF> ]的結果放入IQueryiable<PF>風扇中

像這樣：

fans = fooGroup2;

Answer 1

您可以使用SelectMany 。

//IQueryable<PF>
var fooGroup2 = fooGroup.Where(grp => grp.Count() > 1)
                        .SelectMany(pf => pf);