请问，是否能够通过.netsdk创建文件夹

好的，谢谢！

/// <summary>
        /// 创建空目录
        /// </summary>
        /// <param name="bucketName">Bucket名称</param>
        /// <param name="key">目录名称,须以斜杠结束</param>
        /// <returns></returns>
        public static string CreateFolder(string bucketName, string key)
        {
            string strRs = null;

            try
            {
                using (io.MemoryStream frmMS = new io.MemoryStream())
                {
                    strRs = OssHelper._CreateOssClient().PutObject(bucketName, key, frmMS).ETag;
                }                
            }
            catch (OssException oe)
            {
                OssHelper._WriteLog(oe);
            }
            catch (Exception e)
            {
                OssHelper._WriteLog(e);
            }

            return strRs;
        }