IMAP Client library using C#

' In a Button
        IMAPServer.Login(My.Settings.ServidorIMAP, My.Settings.Usuario, txtSenha.Text)
        IMAPServer.ExamineFolder("INBOX")

' Another Button
        Dim xml As Xml.XmlTextWriter
        NewMails = New System.Collections.ArrayList
        IMAPServer.SearchMessage(SearchString, True, CurrentMails)
        Dim test As New System.Collections.ArrayList ' As String = ""
        If Not (CurrentMails.Equals(PastMails)) Then
            For Each UIDMail As String In CurrentMails
                If (Not UIDMail.Equals("") And PastMails.IndexOf(UIDMail) < 0) Then
                    xml = New Xml.XmlTextWriter(UIDMail & ".txt", System.Text.Encoding.UTF8)
                    IMAPServer.FetchMessage(UIDMail, xml, True)
                    xml.Close
                End If
            Next
        End If

        void RemoveMessageFlags(string sMessageUID, string flags)
        {
            ImapResponseEnum eImapResponse = ImapResponseEnum.IMAP_SUCCESS_RESPONSE;
            string sCommandSuffix = "";
            sCommandSuffix = sMessageUID + ":" + sMessageUID + " -FLAGS " + flags;// "BODY[" + sPartNumber + "]";
			string sCommandString = "STORE " + sCommandSuffix + IMAP_COMMAND_EOL ;

            try
            {
                //-----------------------
                // SEND SEARCH REQUEST
                ArrayList asResultArray = new ArrayList();
                eImapResponse = SendAndReceive(sCommandString, ref asResultArray);
                if (eImapResponse != ImapResponseEnum.IMAP_SUCCESS_RESPONSE)
                {
                    throw new ImapException(ImapException.ImapErrorEnum.IMAP_ERR_FETCHMSG, sCommandSuffix);
                }
            }
            catch (ImapException e)
            {
                LogOut();
                throw e;
            }	
        }

RemoveMessageFlags(1234,@"\SEEN");

bool ParseBodyStructure(string sMessageUID, ref string sBodyStruct, XmlTextWriter oXmlBodyPart, string sPartPrefix, bool bFetchBody)

//mancava un pezzo son diventato scemo!!
                    try
                    {
                        string sData = "";
                        GetBody(sMessageUID, "1", ref sData);
                        if (sData.Length > 0 &&
                            ((sData.ToLower()).IndexOf(IMAP_MESSAGE_CONTENT_TYPE.ToLower()) == -1))
                        {
                            oXmlBodyPart.WriteElementString("DATA", sData);
                        }
                    }
                    catch (ImapException e)
                    {
                        return false;
                    }


                
                
                }
                else // MULTIPART
                {