C#实现Comparable接口实现排序

C#中，实现排序的方法有两种，即实现Comparable或Comparer接口，下面简单介绍实现Comparable接口实现排序功能。

实现Comparable接口需要实现CompareTo(object obj)方法，所以简单实现这个方法就可以很方便的调用其排序功能。

以Student的score为例，进行排序：

具体代码：

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace ConsoleApplicationtest

{

    class Program

    {

        public class Student:IComparable

        {

            int _socre;

            string _name;

            public int score

            {

                set { _socre = value; }

                get { return _socre; }

            }



            public string name

            {

                set { _name = value; }

                get { return _name; }

            }



            public void Display()

            {

                Console.WriteLine("姓名：{0}\t分数：{1}",_name,_socre);

            }



            public int CompareTo(object obj)//实现接口

            {

                Student stu = (Student)obj;

                return this._socre - stu._socre;

            }

        }

        static void Main(string[] args)

        {

            List<Student> stuList = new List<Student>();

            stuList.Add(new Student() { score = 98, name = "Bob" });

            stuList.Add(new Student() { score = 56, name = "Alice" });

            stuList.Add(new Student() { score = 100, name = "Jerry" });

            Console.WriteLine("排序前：");

            foreach (Student mystu in stuList)

            {

                mystu.Display();

            }

            stuList.Sort();

            Console.WriteLine("\n排序后：");

            foreach (Student mystu in stuList)

            {

                mystu.Display();

            }

            Console.ReadKey();

        }

    }

}