1. using System;
2. using System.Collections.Generic;
3. using System.Linq;
4. using System.Text;
5. using System.IO;
6. namespace DirectoryTest
7. {
8.     class Program
9.     {
10.         static void Main(string[] args)
11.         {
12.             string path = @"C:\Users\pengshiyu\Desktop\source";
13.             if(Directory.Exists(path))
14.                 Console.WriteLine("文件夹存在 "+path);
15.             else
16.                 Console.WriteLine("文件夹不存在 "+path);
17.             Console.ReadKey();
18.         }
19.     }
20. }