linq string.contains子对象列表字段

Question

如何修改linq语句，以便找到包含用户的公司的子字符串为“third”？

目前它仅在搜索完整用户名（即包含（“第三个用户”））时起作用，因为它在列表中搜索匹配项，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

你应该在user.Name呼吁string.Contains：

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

看到它联机工作：ideone