/// <summary>

        /// 根据邮件编号返回邮件内容

        /// </summary>

        /// <param name="uid">邮件编号</param>

        /// <returns>成功返回邮件内容，失败返回空字符串</returns>

        public string LoadMessage(long uid)

        {

            try

            {

                /* NOTE: IMAP_Client_FetchHandler provides events to handle IMAP server returned

                 *  fetch data items for requested message(s).

                */

                string html = "";

                IMAP_Client_FetchHandler fetchHandler = new IMAP_Client_FetchHandler();

                fetchHandler.Rfc822 += new EventHandler<IMAP_Client_Fetch_Rfc822_EArgs>(delegate(object s, IMAP_Client_Fetch_Rfc822_EArgs e)

                {

                    MemoryStream storeStream = new MemoryStream();

                    e.Stream = storeStream;

                    e.StoringCompleted += new EventHandler(delegate(object s1, EventArgs e1)

                    {

                        storeStream.Position = 0;

                        Mail_Message mime = Mail_Message.ParseFromStream(storeStream);

                        //this.tmimin.Tag = mime;

                        //m_pTabPageMail_MessageAttachments.Tag = mime;

                        foreach (MIME_Entity entity in mime.Attachments)

                        {