12.泛型集合Dictionary

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _2.泛型集合Dictionary
{
class Program
{
static void Main(string[] args)
{
//创建几个学员对象
Student objstu1 = new Student(1001, "小王");
Student objstu2 = new Student(1002, "校长");
Student objstu3 = new Student(1003, "小李");
Student objstu4 = new Student(1004, "小刘");

        //创建Dictionary泛型集合
        Dictionary<int, Student> stus = new Dictionary<int, Student>();
        stus.Add(1, objstu1);
        stus.Add(2, objstu2);
        stus.Add(3, objstu3);
        stus.Add(4, objstu4);

        //取出元素
        int strId = stus[1].StudentId;
        string strName = stus[1].StudentName;

        //遍历
        //方法1
        foreach (int key  in stus.Keys)
        {
            Console.WriteLine(key);
        }
        //方法2
        foreach (Student value in stus.Values)
        {
            Console.WriteLine(value.StudentName+"\t"+value.StudentId+"\t"+value.Age);
        }

        Console.Read();
    }
}

class Student
{

    public Student()
    {
    }
    /// <summary>
    /// 带有参数的构造函数
    /// </summary>
    /// <param name="stuId"></param>
    /// <param name="stuNmae"></param>
    public Student(int stuId, string stuNmae)
    {
        this.StudentId = stuId;
        this.StudentName = stuNmae;
    }

    public int StudentId { get; set; }
    public string StudentName { get; set; }
    public int Age { get; set; }

}

}