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);
}
}