using System;
using System.IO;namespace IO操作
{class Program{static void Main(string[] args){Console.WriteLine(File.Exists(@"C:\IO.txt"));Console.WriteLine(Directory.Exists(@"C:\"));Console.WriteLine();//获取一个路径下所有可执行文件（.exe）string path = ".";//获取当前路径if (args.Length > 0){if(Directory.Exists(args[0]))path = args[0];//从外部获取的参数elseConsole.WriteLine("{0} is not found", args[0]);}DirectoryInfo dir=new DirectoryInfo(path);foreach(FileInfo f in dir.GetFiles("*.exe")){string name=f.Name;long size=f.Length;DateTime time=f.CreationTime;Console.WriteLine("{0,-12:N0}{1,-20:g}{2}",size,time,name);}}}
}