索引器
//类
class Student
{
public int StuNo { get; set; }
public string StuName { get; set; }
public int StuAge { get; set; }
}
//索引器
class MyClass
{
//存储5个学员信息的数组
public Student[] students = new Student[5];
public MyClass()
{
students[0] = new Student() { StuNo = 1001, StuName = "张三", StuAge = 23 };
students[1] = new Student() { StuNo = 1002, StuName = "李四", StuAge = 24 };
students[2] = new Student() { StuNo = 1003, StuName = "王五", StuAge = 25 };
students[3] = new Student() { StuNo = 1004, StuName = "赵六", StuAge = 26 };
students[4] = new Student() { StuNo = 1005, StuName = "小七", StuAge = 27 };
}
/// <summary>
/// 学号索引器
/// </summary>
/// <param name="stuNo"></param>
/// <returns></returns>
public Student this[int stuNo]
{
get
{
foreach (Student item in students)
{
if (item.StuNo == stuNo)
{
return item;
}
}
return null;
}
}
/// <summary>
/// 姓名索引器
/// </summary>
/// <param name="stuName"></param>
/// <returns></returns>
public Student this[string stuName]
{
get
{
foreach (var item in students)
{
if(item.StuName == stuName)
{
return item;
}
}
return null;
}
}
}
//使用
class Program
{
static void Main(string[] args)
{
MyClass myClass = new MyClass();
Student stu = myClass[1002];
Console.WriteLine("学号:" + stu.StuNo + " 姓名：" + stu.StuName + " 年龄:" + stu.StuAge);
Student stu2 = myClass["小七"];
Console.WriteLine("学号:" + stu2.StuNo + " 姓名：" + stu2.StuName + " 年龄:" + stu2.StuAge);
}
}