c#中实现自定义排序

通过实例说明：本实例包含3个文件，Person类，PersonName类，主程序

Person类：

 

using System;
using System.Collections.Generic;
using System.Text;

namespace Sort
{
    class Person:IComparable
    {
        public string Name;
        public int Age;

        public Person(string name,int age)
        {
            Name = name;
            Age = age;
        }
        public int CompareTo(object obj)
        {
            if (obj is Person)
            {
                Person otherPerson = obj as Person;
                return this.Age - otherPerson.Age;
            }
            else
            {
                throw new ArgumentException("object to compare to is not a person object");
            }
        }
    }
}

 

PersonName类：

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;

namespace Sort
{
    public class PersonCompareName:IComparer
    {
        public static IComparer Default = new PersonCompareName();

        public int Compare(object x, object y)
        {
            if (x is Person && y is Person)
            {
                return Comparer.Default.Compare(((Person)x).Name, ((Person)y).Name);
            }
            else
            {
                throw new ArgumentException("One of the object to compare are not person obj");
            }
        }
    }
}

 

主程序调用：

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;

namespace Sort
{
    class Program
    {
        static void Main(string[] args)
        {
            ArrayList list = new ArrayList();
            list.Add(new Person("tao", 23));
            list.Add(new Person("hua", 22));
            list.Add(new Person("qu", 21));
            list.Add(new Person("zhan", 20));

            Console.WriteLine("Unsort Person:");
            for (int i = 0; i < list.Count;i++ )
            {
                Console.WriteLine("{0}---{1}", (list[i] as Person).Name, (list[i] as Person).Age);
            }
            Console.WriteLine();

            Console.WriteLine("Sort Person by Age:");
            list.Sort();
            for (int i = 0; i < list.Count; i++)
            {
                Console.WriteLine("{0}---{1}", (list[i] as Person).Name, (list[i] as Person).Age);
            }
            Console.WriteLine();

            Console.WriteLine("Sort Person by Name:");
            list.Sort(PersonCompareName.Default);
            for (int i = 0; i < list.Count; i++)
            {
                Console.WriteLine("{0}---{1}", (list[i] as Person).Name, (list[i] as Person).Age);
            }
            Console.WriteLine();

        }
    }
}

 

运行结果;