使用LINQ查询非泛型类型

原文地址:http://www.cnblogs.com/buzz/archive/2009/04/23/1442159.html

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Web.UI;
using System.Web;
using System.Threading;
using System.Globalization;
using System.Data;
using System.Collections;

namespace ConsoleApplication1
{

    class Program
    {
        public class Cars
        {
            public string CarMake { get; set; }
            public string CarModel { get; set; }
            public int Year { get; set; }
        }
       
        public static void Main()
        {
            ArrayList carList = new ArrayList();
            carList.Add(new Cars
            {
                CarMake = "BMW",
                CarModel = "BMW Art",
                Year = 1978
            });
            carList.Add(new Cars
            {
                CarMake = "BMW",
                CarModel = "Coupe",
                Year = 1982
            });
            carList.Add(new Cars
            {
                CarMake = "Renault",
                CarModel = "Alpine",
                Year = 1972
            });
            carList.Add(new Cars
            {
                CarMake = "Porsche",
                CarModel = "Maisto",
                Year = 1976
            });

            var cc = from Cars car in carList
                     where car.CarMake == "BMW"
                     select car;

            var cc1 = from car in carList.Cast<Cars>()
                      where car.CarMake == "BMW"
                      select car;

            var cc2 = from car in carList.OfType<Cars>()
                      where car.CarMake == "BMW"
                      select car;

            foreach (Cars c in cc)
            {
                Console.WriteLine(c.CarMake + "-" + c.CarModel);
            }

            Console.ReadLine();
        }
    }
}