哈希表

Hashtable在命名空间using System.Collections中，实现基于键值的查找很方便

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

namespace 哈希表
{
    class Program
    {
        static void Main(string[] args)
        {
            Hashtable table = new Hashtable();
            Employee P1 = new Employee("1", "li", "21");
            Employee P2 = new Employee("2", "zhang", "22");
            table.Add(P1.ID, P1);
            table.Add(P2.ID, P2);


            foreach (object o in table.Keys)
            {
                if (o == "1")
                {
                    Console.WriteLine(((Employee)table[o]).ID);
                    Console.WriteLine(((Employee)table[o]).age);
                    Console.WriteLine(((Employee)table[o]).name);
                }
                {

                }
            }

        }
        public struct Employee
        {
            public Employee(string a, string b, string c)
            {
                ID = a;
                name = b;
                age = c;
            }
            public string ID;
            public string name;
            public string age;
        }
    }
}