如何利用Path类处理.NET文件

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

namespace PathClassCSharp {

class Program {

static void Main(string[] args){

string testPath;

string p1;

string p2;

char[] fnChars;
inti;

testPath = "c:\\techrepublic.txt";

p1 = "c:\\";

p2 = "test.exe";

Console.WriteLine("Directory name: " + Path.GetDirectoryName(testPath));

if (Path.HasExtension(testPath)) {

Console.WriteLine("File extension: " + Path.GetExtension(testPath));

}

Console.WriteLine("Filename: " + Path.GetFileName(testPath));

Console.WriteLine("Filename w/o ext: " + Path.GetFileNameWithoutExtension(testPath));

Console.WriteLine("Full path: " + Path.GetFullPath(testPath));

fnChars = Path.GetInvalidFileNameChars();

if (Path.IsPathRooted(testPath)) {

Console.WriteLine("Root: " + Path.GetPathRoot(testPath));

}

Console.WriteLine("Random file name: " + Path.GetRandomFileName());

Console.WriteLine("Temp file name: " + Path.GetTempFileName());

if (File.Exists(testPath)) {

Console.WriteLine("File does exist.");

} 

if (File.Exists(Path.Combine(p1, p2))) {

Console.WriteLine("The file " + Path.Combine(p1, p2) + " exists.");

} else {

Console.WriteLine("The file " + Path.Combine(p1, p2) + " does not exist.");

} } } }