C#迭代删除文件夹

 public static void DeleteDirChild(string srcPath)
    {
        if (!Directory.Exists(srcPath))
            return;

        try
        {
            DirectoryInfo dir = new DirectoryInfo(srcPath);
            FileSystemInfo[] fileinfo = dir.GetFileSystemInfos();  //返回目录中所有文件和子目录
            if (fileinfo.Length < 1)
                Directory.Delete(srcPath);
            foreach (FileSystemInfo i in fileinfo)
            {
                if (i is DirectoryInfo)            //判断是否文件夹
                {
                    DirectoryInfo subdir = new DirectoryInfo(i.FullName);
                    subdir.Delete(true);          //删除子目录和文件
                }
                else
                {
                    File.Delete(i.FullName);      //删除指定文件
                                                  // Log.GetInstance().WriteDeBug("delete:"+i.FullName);
                }
            }
            fileinfo = dir.GetFileSystemInfos();
            if (fileinfo.Length < 1)
                Directory.Delete(srcPath);
        }
        catch (Exception ex)
        {
            Log.GetInstance().WriteError(ex.Message);
        }
    }