C#安全删除文件目录的代码

C#安全删除文件目录的代码
1. 创建文件夹 (简单，没多考虑)
2. 删除所建文件夹：为防止删除过程中有其他进程引用该文件夹中文件，增加了对此意外情况的考虑。 在本例中，若删除过程中被其他进程引用，等待并循环5次尝试再次删除操作。长时间无法被删除，则删除文件目录失败

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();
        }
    }
}