using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;
using?System.Net.Sockets;
using?UtilSp.ClassLib;
using?System.Threading;
using?System.Linq.expressions;

namespace?SmtpTest
{
????public?partial?class?FormMain?:?Form
????{
????????public?FormMain（）
????????{
????????????InitializeComponent（）;
????????}

????????private?Helper?helper_?=?new?Helper（）;

????????private?void?buttonSend_Click（object?sender?EventArgs?e）
????????{
????????????SmtpSp?smtpSp?=?new?SmtpSp（）;
????????????SmtpSp.MailInfo?mailInfo?=?new?SmtpSp.MailInfo（）;
????????????mailInfo.senderAddress_pro?=?textBoxSender.Text;
????????????mailInfo.receiverAddresses_pro?=?new?List（textBoxReceivers.Text.Split（‘;‘））;
????????????mailInfo.subject_pro?=?textBoxSubject.Text;
????????????mailInfo.content_pro?=?textBoxContent.Text;
????????????mailInfo.userName_pro?=?textBoxUserName.Text;
????????????mailInfo.password_pro?=?textBoxPassword.Text;
????????????if?（listBoxAttachment.Items.Count?>?0）
????????????{
????????????????string[]?attachments?=?new?string[listBoxAttachment.Items.Count];
????????????????listBoxAttachment.Items.CopyTo（attachments?0）;
????????????????mailInfo.attachments_pro?=?new?List（attachments）;
????????????}
????????????helper_.statusInfo_pro?=?“Sending...“;
????????????this.Refresh（）;
????????????Thread?sendThread?=?new?Thread（（）?=>
????????????{
????????????????bool?isSendOK?=?smtpSp.send（textBoxServer.Text?25?mailInfo）;
????????????????string?sendResult?=?““;
????????????????if?（isSendOK）
????????????????{
????????????????????sendResult?=?“Send?ok“;
????????????????}
????????????????else
????????????????{
????????????????????string?failMessage?=?“Send?Fail!“;
????????????????????if?（smtpSp.exception_pro?!=?null）
????????????????????{
????????????????????????failMessage?+=?smtpSp.exception_pro.Message;
????????????????????}
????????????????????sendResult?=?failMessage;
????????????????}
????????????????this.Invoke（（Action）（（）?=>?{?
????????????????????helper_.statusInfo_pro?=sendResult;
????????????????}））;
????????????}）;
????????????sendThread.IsBackground?=?true;
????????????sendThread.Start（）;
????????}

????????private?void?FormMain_Load（object?sender?EventArgs?e）
????????{
????????????buttonStatus.DataBindings.Add（“Text“?helper_?“statusInfo_pro“）;
????????}

????????private?void?listBoxAttachment_MouseDown（object?sender?MouseEventArgs?e）
????????{
????????????if?（e.Button?==?MouseButtons.Right）
????????????{
????????????????contextMenuStripAttachment.Show（sender?as?Control?e.X?e.Y）;
????????????}
????????}

????????private?void?addToolStripMenuItem_Click（object?sender?EventArgs?e）
????????{
????????????string?attachmentPath?=?FileSp.getOpenDialogFileName（）;
????????????if?（string.IsNullOrEmpty（attachmentPath））
????????????{