using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Start Work ...\r\n");

        Create_list();

        Sort_list();

        Console.WriteLine("\r\nFinish.");

    }

    private static List<custom_item> List_unsort = new List<custom_item>();

    private class custom_item

    {

        public int id { get; set; }

        public string name { get; set; }

        public double number { get; set; }

    }

    private static void Create_list()

    {

        Random rnd = new Random();

        Console.WriteLine("Unsort List : ");

        for (int i = 0; i < 10; i++)

        {

            custom_item item = new custom_item();

            item.name = i.ToString();

            item.id = i;

            double rnd_num = rnd.NextDouble();

            item.number = rnd_num;

            Console.WriteLine("ID : " + item.id + ", number : " + item.number);

            List_unsort.Add(item);

        }

        Console.WriteLine("\r\n--------------------\r\n");

    }

    private static void Sort_list()

    {

        var list = List_unsort.OrderBy(x => x.number);

        Console.WriteLine("Sort List : ");

        foreach (var item in list)

        {

            Console.WriteLine("ID : " + item.id + ", number : " + item.number);

        }

    }

​

}