VS2008上遇到用ICompare实现Sort的问题

  当用VS2008自动创建一个类时都会包含一下几个空间命名：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

 

当用这份创建的类实现ICompare借口时，会提示你要使用IComparer<T>，实现这个借口后，如果你要实现ArrayList中的 Sort(ICompare comparer)时，你实现的这个 IComparer<T>泛型借口不能使用！因为ArrayList中的sort()不支持泛型

 解决办法是用using System.Collection中的ICompare借口，而不用泛型！

 

//实现ICompare借口的类using System;using System.Linq;using System.Text;using System.Collections;namespace SortPerson{ class MyPersonCompare:IComparer { #region IComparer<Person> 成员 public int Compare(Object x, Object y) { if (((Person)x).Age > ((Person)y).Age) //强制转换成Person { return 1; } else if (((Person)x).Age < ((Person)y).Age) { return -1; } else { return 0; } } #endregion }} 

 

 

 

//Person类

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace SortPerson{ class Person { private string _name; private int _age; public Person(string name, int age) { this._name = name; this._age = age; } public string Name { get { return this._name; } } public int Age { get { return this._age; } set { this._age = value; } } }} 

 

//测试类

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections;namespace SortPerson{ class Program { static void Main(string[] args) { ArrayList personList = new ArrayList(); personList.Add(new Person("one", 21)); personList.Add(new Person("two", 10)); personList.Add(new Person("three", 26)); personList.Add(new Person("four", 24)); personList.Add(new Person("five", 20)); personList.Add(new Person("six", 18)); Console.WriteLine("没有排序之前的顺序："); foreach (Person person in personList) { Console.WriteLine("姓名："+person.Name+"/t年龄："+person.Age); } Console.WriteLine("排序后的顺序："); IComparer personCompare = new MyPersonCompare(); //理解 personList.Sort(personCompare); //理解 foreach (Person person in personList) { Console.WriteLine("姓名：" + person.Name + "/t年龄：" + person.Age); } Console.ReadKey(); } }}