public static List<string> GetFile(string path, List<string> FileList, string RelativePath)

        {

            DirectoryInfo dir = new DirectoryInfo(path);

            FileInfo[] fil = dir.GetFiles();

            DirectoryInfo[] dii = dir.GetDirectories();

            foreach (FileInfo f in fil)

            {

                //int size = Convert.ToInt32(f.Length);

                //long size = f.Length;

                FileList.Add(f.FullName);//添加文件路径到列表中

            }

            //获取子文件夹内的文件列表，递归遍历

            foreach (DirectoryInfo d in dii)

            {

                GetFile(d.FullName, FileList, RelativePath);

            }

            return FileList;

        }