C# params关键字

代码：
using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Test("Jack"));//不传值，显示Jack
            Console.WriteLine(Test("Jack", "Hi"));//传一个值，显示Jack Hi
            Console.WriteLine(Test("Jack", "Hi", "How are you?"));//传多个值，显示Jack Hi How are you?
            Console.ReadKey();
        }
        static string Test(string name, params string[] args)
        {
            string msg = name;
            for (int i = 0; i < args.Length; i++)
                msg += " " + args[i];
            return msg;
        }
    }
}
注意事项：
一个函数中只能一个参数带params关键字；
带params关键字的参数必须是最后一个参数；
带params关键字的参数类型必须是一维数组；