复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace StreamReadWrite
{
class Program
{
static void Main(string[] args)
{
// Get the directories currently on the C drive.
DirectoryInfo[] cDirs = new DirectoryInfo(@"e:\").GetDirectories();

// Write each directory name to a file.
using (StreamWriter sw = new StreamWriter("CDriveDirs.txt"))
{
foreach (DirectoryInfo dir in cDirs)
{
sw.WriteLine(dir.Name);

}
}

// Read and show each line from the file.
string line = "";
using (StreamReader sr = new StreamReader("CDriveDirs.txt"))
{
while ((line = sr.ReadLine()) != null)
{
Console.WriteLine(line);
}
}
}
}
}