C#中的IComparer接口

1前言
本文通过一个简单的例子，说明如何通过传递实现IComparer接口的类，对ArrayList集合中的元素按照自定义的排序逻辑进行排序。
2例子
2.1定义StudentInfo类

    public class StudentInfo
    {
        public string id;//学号
        public string name;//姓名
        public string address;//家庭住址
        public StudentInfo(string id, string name, string address)
        {
            this.id = id;
            this.name = name;
            this.address = address;
        }
        public void Show()
        {
            Console.WriteLine(id + ", " + name + ", " + address);
        }
    }

2.2定义实现IComparer接口类，该类对学生按照姓名进行降序排序

    public class StudentNameCompare : IComparer
    {
        public int Compare(object x, object y)
        {
            return new CaseInsensitiveComparer().Compare(((StudentInfo)y).name,((StudentInfo)x).name);
        }
    }

2.3利用实现IComparer接口的类对学生信息进行排序

            ArrayList arrayList = new ArrayList();
            StudentInfo customer1 = new StudentInfo("Id002","王三","河南郑州市");
            arrayList.Add(customer1);
            StudentInfo customer2 = new StudentInfo("Id001","赵大","山东菏泽市");
            arrayList.Add(customer2);
            StudentInfo customer3 = new StudentInfo("Id003","钱二","湖北武汉市");
            arrayList.Add(customer3);
            Console.WriteLine("排序前的集合排列");
            for (int i = 0; i < arrayList.Count; ++i)
            {
                StudentInfo customerInfoElement = (StudentInfo)arrayList[i];
                customerInfoElement.Show();
            }
            Console.WriteLine("排序后的集合排列");
            arrayList.Sort(new StudentNameCompare());
            for (int i = 0; i < arrayList.Count; ++i)
            {
                StudentInfo customerInfoElement = (StudentInfo)arrayList[i];
                customerInfoElement.Show();
            }

2.4执行结果