C#实现安全删除文件目录的方法

using System;using System.IO;namespace Retry{ class Program { static void Main(string[] args) {  DirectoryInfo dirInfo = Directory.CreateDirectory(@"C:/TestDir");  string folderName = System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "//TestDir";  if (!Directory.Exists(folderName))  {  Directory.CreateDirectory(folderName);  Console.WriteLine("{0} created! ",folderName);  }  int retryTimes = 1;  do  {  if (Directory.Exists(folderName))  {   try   {   Console.WriteLine("Tring to delete file the {0} time.",retryTimes);   Directory.Delete(folderName, true);   Console.WriteLine("Deleting file successfully.");   break;   }   catch (IOException ex)   {   Console.WriteLine("Exception! ", ex.ToString());   Console.WriteLine("Sleep 5 seconds and retry.");   System.Threading.Thread.Sleep(5000);   retryTimes++;   }  }  else  {   Console.WriteLine("Delete folder successfully");   break;  }  } while (retryTimes <= 5);  if (Directory.Exists(folderName))  Console.WriteLine("Deleting folder failed.");  Console.WriteLine("Done");  Console.ReadKey(); } }}