linq字符串.包含子对象列表的一个字段

Question

如何修改这里的linq语句，使其找到包含子字符串为"third"的用户的公司?

目前它只在搜索完整用户名时起作用，即包含("第三个用户")，因为它正在搜索列表中的匹配项，而不是字符串。

class Company
{
    public Company(List<User> users) { this.Users = users; }
    public List<User> Users { get; set; }
}
class User
{
    public User(string name) { this.Name = name; }
    public string Name { get; set; }
}
class Program
{
    static void Main(string[] args)
    {
        List<Company> companies = new List<Company>();
        Company company1 = new Company(new List<User>(){ new User("first user"), new User("second user") });
        Company company2 = new Company(new List<User>() { new User("third user"), new User("fourth user") });
        companies.Add(company1);
        companies.Add(company2);
        companies = companies
                            .Where(company => company.Users.Select(user => user.Name)
                            .Contains("third")).ToList();
    }
}

Answer 1

您应该在user.Name上调用string.Contains:

companies = companies
    .Where(company => company.Users.Any(user => user.Name.Contains("third")))
    .ToList();

查看其在线运行情况:ideone