遍历目录下的所有文件

private void button1_Click(object sender, EventArgs e) 

 { 

 SearchDirectory(@"D:\My Documents"); 

 } 

 public void SearchDirectory(string Path) 

 { 

 // Search the directory 

 DirectoryInfo di = new DirectoryInfo(Path); 

 FileInfo[] f = di.GetFiles(); 

 listBox1.BeginUpdate(); 

 foreach (FileInfo myFile in f) 

 listBox1.Items.Add(myFile.FullName); 

 listBox1.EndUpdate(); 

 // Search its sub directories 

 DirectoryInfo[] d = di.GetDirectories(); 

 foreach (DirectoryInfo myDir in d) 

 SearchDirectory(myDir.FullName); 

 }