更改 linq 查询以过滤多对多

Question

我有以下 Linq 查询

public static List<string> selectedLocations = new List<string>();

// I then populate selectedLocations with a number of difference strings, each
// corresponding to a valid Location

viewModel.people = (from c in db.People
                    select c)
                    .OrderBy(x => x.Name)
                    .ToList();

// Here I'm basically filtering my dataset to include Locations from
// my array of selectedLocations

viewModel.people = from c in viewModel.people
                    where (
                    from a in selectedLocations
                    where a == c.Location.Name
                    select a
                    ).Any()
                    select c;

这非常有效，因为每个 Person 记录都可以有一个 Location。

我的问题是，如果 Person 可以与 Location 建立一对多关系，我该如何更改此查询？以一个人可以有 2 个位置为例，我需要将此行更改为什么？

where a == c.Location.Name

谢谢！

Answer 1

你可以尝试更换这部分：

where a == c.Location.Name

有了这个：

where c.Locations.Any(o => o.Name == a)

如果Locations 属性中的任何Location 具有Name 等于a，则返回true。