代碼如下:

protected void Page_Load(object sender, EventArgs e) 
{ 
//指定目標文件夾 
string directory = @"C:\Windows\Microsoft.NET\Framework\v3.5"; 

IterationFile(directory); 
} 

private void IterationFile(string path) 
{ 
DirectoryInfo di = new DirectoryInfo(path); 

//輸出當前目錄。 
Response.Write(di.ToString() + "<br />"); 
//取得當前目錄中所有文件 
FileInfo[] fiArray = di.GetFiles(); 

//循環每一個文件 
for (int i = 0; i < fiArray.Length; i++) 
{ 
Response.Write(fiArray[i].ToString() + "<br/>"); 
} 

//每個目錄結束，寫一空行。 
Response.Write("----------------------------------------------------------------------------<br/>"); 
//取得當前目錄中所有子目錄 
DirectoryInfo[] diArray = di.GetDirectories(); 

//循環每一個目錄 
for (int j = 0; j < diArray.Length; j++) 
{ 
IterationFile(diArray[j].FullName); 
} 
}