使用List类实例

using System; using System.Collections.Generic; using System.Text; namespace hgoApp { public class Racer { private string _Name; public string Name { get { return _Name; } } private string _Car; public string Car { get { return _Car; } } public Racer(string Name, string Car) { this._Name = Name; this._Car = Car; } public override string ToString() { return string.Format("{0}开的车是名车{1}", _Name, _Car); } } class Test { static void Main() { List<Racer> MyRacer = new List<Racer>(); //添加对象 MyRacer.Add(new Racer("aa", "宝马")); MyRacer.Add(new Racer("bb", "奔驰")); MyRacer.Add(new Racer("cc", "保时捷")); MyRacer.Add(new Racer("dd", "宝马")); foreach (Racer R in MyRacer) { Console.WriteLine(R); } //查找车型为宝马的车 FindCar MyCar = new FindCar("宝马"); //new Predicate实际上一个返回类型为bool的委托,这里委托代理的方法是DriveCar //FindAll找出返回为True的List<Racer>列表 foreach (Racer R in MyRacer.FindAll(new Predicate<Racer>(MyCar.DriveCar))) { Console.WriteLine(R); } } } //查找相应的车型 public class FindCar { private string _car; public FindCar(string car) { this._car = car; } //如果在Racer找到对应的Car就返回true public bool DriveCar(Racer R) { return (R.Car == _car) ? true : false; } } }