c# - ForEach 和 foreach

Question

我正在尝试将多个字符串添加到 C# 中的 MailAddress。

如果我使用ForEach，我的代码会是这样

        foreach (var item in GetPeopleList())
        {
            m.Bcc.Add(new MailAddress(item.EmailAddress));
        }

我现在正尝试用我的 foreach(即 List.ForEach())执行此操作，但我做不到。

 public class Person
    {
        public Person(string firstName, string lastName, string emailAddress)
        {
            FirstName = firstName;
            LastName = lastName;
            EmailAddress = emailAddress;
        }

        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string EmailAddress { get; set; }
    }

        static void Main(string[] args)
        {
            MailMessage m = new MailMessage();
            List<Person> people = GetPeopleList();

            m.Bcc.Add(people.ForEach(Person people =>
                {
                    //what goes here?
                }
            ));
        }

        private static List<Person> GetPeopleList()
        {
            List<Person> peopleList = new List<Person>();
            //add each person, of type Person, to the list and instantiate the class (with the use of 'new')
            peopleList.Add(new Person("Joe", "Bloggs", "Joe.Bloggs@foo.bar"));
            peopleList.Add(new Person("John", "Smith", "John.Smith@foo.bar"));
            peopleList.Add(new Person("Ann", "Other", "Ann.Other@foo.bar"));
            return peopleList;
        }

我已经尝试了几个版本/变体，但我显然做错了什么。我读了Eric Lippert's page关于它，遗憾的是这也没有帮助。

Answer 1

你需要这样的东西

people.ForEach(Person p => {
    m.Bcc.Add(new MailAddress(p.EmailAddress));
});

不是添加使用 ForEach 选择的单个项目范围，而是在列表中添加单个项目 ForEach person。

也就是说...我自己更喜欢常规的 foreach 循环。