集合属性上的动态Linq嵌套选择

class Person
{
    public string Name { get; set; }
    public List<string> Hobbies { get; set; }
}

List<Person> people = new List<Person>
{
    new Person { Name = "John", Hobbies = new List<string> { "Reading", "Gaming" } },
    new Person { Name = "Jane", Hobbies = new List<string> { "Cooking", "Hiking" } },
    new Person { Name = "Bob", Hobbies = new List<string> { "Sports", "Photography" } }
};

List<string> selectedHobbies = people
    .SelectMany(person => person.Hobbies) // 动态选择Hobbies属性
    .Where(hobby => hobby.Contains("ing")) // 过滤包含"ing"的兴趣爱好
    .ToList();

foreach (string hobby in selectedHobbies)
{
    Console.WriteLine(hobby);
}