000: // CommandLine\cmdline1.cs
001: using System;
002:
003: public class CommandLine
004: {
005: public static void Main(string[] args)
006: {
007: Console.WriteLine("Number of command line parameters = {0}", args.Length);
008: for(int i = 0; i < args.Length; i++)
009: {
010: Console.WriteLine("Arg[{0}] = [{1}]", i, args[i]);
011: }
012: }
013: }
如果你的輸入為:

cmdline1 A B C

那么它的輸出為:
Number of command line parameters = 3
Arg[0] = [A]
Arg[1] = [B]
Arg[2] = [C]

哈哈,看出了其中的秘密了吧!是的{0}是一個(gè)標(biāo)記,它告訴系統(tǒng),這里留下了給第0個(gè)參數(shù)用,在程序中,這第0個(gè)參數(shù)就是i.因此,打印出來的就是Arg[0],面不是Arg[{0}]了,哈哈!

例二向大家展示了foreach這個(gè)語句的用法,其實(shí)在ASP中,這個(gè)經(jīng)常用到:

000: // CommandLine\cmdline2.cs
001: using System;
002:
003: public class CommandLine2
004: {
005: public static void Main(string[] args)
006: {
007: Console.WriteLine("Number of command line parameters = {0}", args.Length);
008: foreach(string s in args)
009: {
010: Console.WriteLine(s);
011: }
012: }
013: }
很顯然,args是一個(gè)數(shù)組,而且是字符型的.foreach的意思就是把其中的所有元素都循環(huán)完.運(yùn)行得出:

>cmdline2 John Paul Mary
Number of command line parameters = 3
John
Paul
Mary
好了,同志們,休息一下,我要睡覺了!88,下次再見!