public void ReadFilePath(string path)
        {
            string[] dirs = Directory.GetFileSystemEntries(path);//获取文件目录和文件名
            for (int i = 0; i<dirs.Length; i++)
            {
                if (Directory.Exists(dirs[i]))//如果是文件夹，则进行递归调用
                {
                    ReadFilePath(dirs[i]);
                }
                else
                {
                    if (Path.GetFileName(dirs[i]) == "xxx.yyy")
                    {

　　　　　   }
                }
            }
        }