清空文件夹里面的所有文件和文件夹

private void deletefileOrDic(System.IO.DirectoryInfo path)        {            try            {                foreach (System.IO.DirectoryInfo d in path.GetDirectories())                {                    d.Delete(true);                }                foreach (System.IO.FileInfo f in path.GetFiles())                {                    f.Delete();                }            }            catch (Exception ex)            {            }        }