查询两个集合中匹配数据并输出, 能写得这样容易真是让人有点震撼, 不学习真是要落伍了!

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication4

{

    class Program

    {

        static void Main(string[] args)

        {

            List<Product> list = new List<Product>();

            list.Add(new Product("htc", 3000));

            list.Add(new Product("nokia", 2000));

            list.Add(new Product("moto", 1000));

            List<Company> company_list = new List<Company>();

            company_list.Add(new Company("htc","taiwan"));

            company_list.Add(new Company("nokia","swiden"));

            company_list.Add(new Company("moto","america"));

 

            var fliter = from Product p in list

                         join Company c1 in company_list on p.Name equals c1.CompanyName

                         where p.Price > 1000

                         select new { p.Name, p.Price, c1.CompanyAddress };

            foreach (var v in fliter)

            {

                Console.WriteLine(v.Name + v.CompanyAddress + v.Price );

            }

            Console.ReadKey();

        }

    }

    public class Product

    {

        public string Name { set; get; }

        public decimal Price { set; get; }

        public Product(string Name, decimal Price)

        {

            this.Name = Name;

            this.Price = Price;

        }

    }

    public class Company

    {

        public string CompanyName { set; get; }

        public string CompanyAddress { set; get; }

        public Company(string _Name, string _Address)

        {

            this.CompanyName = _Name;

            this.CompanyAddress = _Address;

        }

    }

}

 

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这段集合初始化还是落伍了.

            List<Product> list = new List<Product>();

            list.Add(new Product("htc", 3000));

            list.Add(new Product("nokia", 2000));

            list.Add(new Product("moto", 1000));

            List<Company> company_list = new List<Company>();

            company_list.Add(new Company("htc","taiwan"));

            company_list.Add(new Company("nokia","swiden"));

            company_list.Add(new Company("moto","america"));

 

可以改造如下:

 

            List<Product> list = new List<Product>(){

              new Product("htc", 3000),

              new Product("nokia", 2000),

              new Product("moto",1000)           

            };

            List<Company> company_list = new List<Company>()

            {

               new Company("htc", "taiwan"),

               new Company("nokia", "swiden"),

               new Company("moto", "america")

            };