using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Text;
using?System.Windows.Forms;

using?System.Net.Mail;
using?System.Net.Mime;
using?System.Net;
using?System.IO;

namespace?SendEmail
{
????public?partial?class?Form1?:?Form
????{
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????????this.ImeMode?=?ImeMode.Hangul;
????????}

????????//窗體的Load事件
????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????//添加倆個smpt服務(wù)器的名稱
????????????cmbBoxSMTP.Items.Add（“smtp.163.com“）;
????????????cmbBoxSMTP.Items.Add（“smtp.gmail.com“）;
????????????//設(shè)置為下拉列表
????????????cmbBoxSMTP.DropDownstyle?=?ComboBoxstyle.DropDownList;
????????????//默認(rèn)選中第一個選項(xiàng)
????????????cmbBoxSMTP.SelectedIndex?=?0;
????????????//在下面添加你想要初始化的內(nèi)容，比如顯示姓名、用戶名等

????????}

????????//添加按鈕的單擊事件
????????private?void?btnAdd_Click（object?sender?EventArgs?e）
????????{
????????????//定義并初始化一個OpenFileDialog類的對象
????????????OpenFileDialog?openFile?=?new?OpenFileDialog（）;
????????????openFile.InitialDirectory?=?Application.StartupPath;
????????????openFile.FileName?=?““;
????????????openFile.RestoreDirectory?=?true;
????????????openFile.Multiselect?=?false;

????????????//顯示打開文件對話框，并判斷是否單擊了確定按鈕
????????????if?（openFile.ShowDialog（）?==?DialogResult.OK）
????????????{
????????????????//得到選擇的文件名
????????????????string?fileName?=?openFile.FileName;
????????????????//將文件名添加到TreeView中
????????????????treeViewFileList.Nodes.Add（fileName）;
????????????}
????????}

????????//刪除按鈕的單擊事件
????????private?void?btnDelete_Click（object?sender?EventArgs?e）
????????{
????????????//判斷是否選中了節(jié)點(diǎn)
????????????if?（treeViewFileList.SelectedNode?!=?null）
????????????{
????????????????//得到選擇的節(jié)點(diǎn)
????????????????TreeNode?tempNode?=?treeViewFileList.SelectedNode;
????????????????//刪除選中的節(jié)點(diǎn)
????????????????treeViewFileList.Nodes.Remove（tempNode）;
????????????}
????????????else
????????????{
????????????????MessageBox.Show（“請選擇要刪除的附件。“）;
????????????}
????????}

????????//發(fā)送按鈕的單擊事件
????????private?void?btnSend_Click（object?sender?EventArgs?e）
????????{
????????????try
????????????{
????????????????//確定smtp服務(wù)器地址。實(shí)例化一個Smtp客戶端
????????????????System.Net.Mail.SmtpClient?client?=?new?System.Net.Mail.SmtpClient（cmbBoxSMTP.Text）;
????????????????//生成一個發(fā)送地址
????????????????string?strFrom?=?string.Empty;
????????????????if?（cmbBoxSMTP.SelectedText?==?“smtp.163.com“）
????????????????????strFrom?=?txtUserName.Text?+?“@163.com“;
????????????????else
????????????????????strFrom?=?txtUserName.Text?+?“@gmail.com“;

????????????????//構(gòu)造一個發(fā)件人地址對象
????????????????MailAddress?from?=?new?MailAddress（strFrom?txtDisplayName.Text?Encoding.UTF8）;
????????????????//構(gòu)造一個收件人地址對象
????????????????MailAddress?to?=?new?MailAddress（txtEmail.Text?txtToName.Text?Encoding.UTF8）;

????????????????//構(gòu)造一個Email的Message對象
????????????????MailMessage?mess

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

????.CA....?????35053??2008-11-29?18:18??SendEmail\Image\AppLayout.JPG

????.CA....?????42113??2008-11-29?20:01??SendEmail\Image\AppRun1.JPG

????.CA....?????42309??2008-11-29?20:02??SendEmail\Image\AppRun2.JPG

????.CA....?????41595??2008-11-29?20:05??SendEmail\Image\Email.JPG

????.CA....?????28672??2008-11-29?19:59??SendEmail\SendEmail\bin\Debug\SendEmail.exe

????.CA....?????28160??2008-11-29?19:59??SendEmail\SendEmail\bin\Debug\SendEmail.pdb

????.CA....??????5632??2005-11-11?22:25??SendEmail\SendEmail\bin\Debug\SendEmail.vshost.exe

????.CA....??????5909??2008-11-29?19:59??SendEmail\SendEmail\Form1.cs

????.CA....?????15773??2008-11-29?19:09??SendEmail\SendEmail\Form1.Designer.cs

????.CA....??????5814??2008-11-29?19:09??SendEmail\SendEmail\Form1.resx

????.CA....???????842??2008-11-29?19:16??SendEmail\SendEmail\obj\Debug\SendEmail.csproj.GenerateResource.Cache

????.CA....?????28672??2008-11-29?19:59??SendEmail\SendEmail\obj\Debug\SendEmail.exe

????.CA....???????180??2008-11-29?19:16??SendEmail\SendEmail\obj\Debug\SendEmail.Form1.resources

????.CA....?????28160??2008-11-29?19:59??SendEmail\SendEmail\obj\Debug\SendEmail.pdb

????.CA....???????180??2008-11-29?17:54??SendEmail\SendEmail\obj\Debug\SendEmail.Properties.Resources.resources

????.CA....???????282??2008-11-30?08:32??SendEmail\SendEmail\obj\SendEmail.csproj.FileList.txt

????.CA....???????468??2008-11-29?17:53??SendEmail\SendEmail\Program.cs

????.CA....??????1172??2008-11-29?17:53??SendEmail\SendEmail\Properties\AssemblyInfo.cs

????.CA....??????2873??2008-11-29?17:53??SendEmail\SendEmail\Properties\Resources.Designer.cs

????.CA....??????5612??2008-11-29?17:53??SendEmail\SendEmail\Properties\Resources.resx

????.CA....??????1093??2008-11-29?17:53??SendEmail\SendEmail\Properties\Settings.Designer.cs

????.CA....???????249??2008-11-29?17:53??SendEmail\SendEmail\Properties\Settings.settings

????.CA....??????3225??2008-11-29?17:54??SendEmail\SendEmail\SendEmail.csproj

????.CA....???????916??2008-11-29?17:53??SendEmail\SendEmail.sln

????.CA..H.?????12800??2008-11-29?20:32??SendEmail\SendEmail.suo

????.C.D...?????????0??2008-11-29?18:51??SendEmail\SendEmail\obj\Debug\Refactor

????.C.D...?????????0??2008-11-29?17:53??SendEmail\SendEmail\obj\Debug\TempPE

????.C.D...?????????0??2008-11-29?17:54??SendEmail\SendEmail\bin\Debug

????.C.D...?????????0??2008-11-29?19:59??SendEmail\SendEmail\obj\Debug

????.C.D...?????????0??2008-11-29?17:53??SendEmail\SendEmail\bin

............此處省略8個文件信息