using System;
using System.Collections;

namespace DemoConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            // 打印表頭
            Console.WriteLine("環(huán)境變量名\t=\t環(huán)境變量值");

            // 把環(huán)境變量中所有的值取出來，放到變量environments中
            IDictionary environments = Environment.GetEnvironmentVariables();

            // 遍歷environments中所有鍵值
            foreach (string environmentKey in environments.Keys)
            {
                // 打印出所有環(huán)境變量的名稱和值
                Console.WriteLine("{0}\t=\t{1}", environmentKey, environments[environmentKey].ToString());
            }

            Console.Read();
        }
    }
}