C#中List的Find方法的使用

查找List中的某个值，可以使用循环遍历对比，查找出结果。C#中提供了Find方法，可以直接使用，只要查找条件传入就可。如下：

    class Program    {        public static void Main(string[] args)        {            List<User> userCollection = new List<User>();            userCollection.Add(new User(1, "testOne"));            userCollection.Add(new User(2, "testTwo"));            userCollection.Add(new User(3, "testThree"));            User resultUser = userCollection.Find(                delegate(User user)                {                    //return user.UserID == 0;                    return user.UserID == 1 && user.UserName.Equals("testOne");                });            Console.WriteLine(resultUser != null ?                                 resultUser.UserID + System.Environment.NewLine + resultUser.UserName : "没有查找到");            Console.ReadLine();        }    }    public class User    {        private int userID = 0;        private string userName = string.Empty;        public int UserID        {            get            {                return this.userID;            }        }        public string UserName        {            get            {                return this.userName;            }        }        public User(int userID, string userName)        {            this.userID = userID;            this.userName = userName;        }    }

结果：