邮件发送系统很多，但是我这边给大家展示下我最近开发的一款邮件发送系统，有参照网上的一个兄弟的界面，进行了升级，界面如下。
从界面上我们可以看到了该邮件系统有如下功能:
1）服务器的设置
2）发件人的设置
3）收件人的设置
4）主题编写
5）附件添加管理
6）日志输出
7）窗口关闭的时候会自动保存服务器，收件人信息。
整体的实现代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading.Tasks;
using System.Windows.Forms;
using SendEmail.util;
using System.Collections;
using System.Net.Mail;
using System.Net;
using System.Net.Mime;
namespace SendEmail
{
public partial class Form1 : Form
{
#region 常量定义
// 服务器备份地址
private const string SERVER_BACK_UP_PATH = "server.txt";
// 收件人备份地址
private const string EmailFrom_BACK_UP_PATH = "emailaddress.txt";
#endregion
#region 变量定义
// 服务器存放
private Dictionary<string, int> serverMap = new Dictionary<string,int>();
private ArrayList serverList = new ArrayList();
// 收件人存放
private ArrayList emailFroms = new ArrayList();
#endregion
#region 构造函数
public Form1()
{
InitializeComponent();
// 初始化服务器
initComServer();
// 初始化收件人
initGrdEmail();
}
#endregion
#region 服务器地址
// 初始化设备列表(从txt中读取设备信息)
private void initComServer()
{
// 假如数据文件存在
if (File.Exists(SERVER_BACK_UP_PATH))
{
ArrayList datas = FileUtil.readFile(SERVER_BACK_UP_PATH);
// 数据存在
if (datas != null && datas.Count > 0)
{
// 清空数据
serverMap.Clear();
serverList.Clear();
// 遍历
foreach (string s in datas)
{
string[] splitArray = s.Split(',');
// 1.服务器名称 2.端口
if (splitArray != null && splitArray.Length == 2)
{
serverList.Add(splitArray[0]);
serverMap.Add(splitArray[0], int.Parse(splitArray[1]));
}
}
bindComServer();
}
}
}
// 绑定下拉框
private void bindComServer()
{
comServer.Items.Clear();
comdelServer.Items.Clear();
foreach (string s in serverList)
{
comServer.Items.Add(s);
comdelServer.Items.Add(s);
}
comServer.SelectedIndex = 0;
comdelServer.SelectedIndex = 0;
}
// 添加服务
private void button1_Click(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(this.txtServer.Text.Trim()))
{
MessageBox.Show("请填写服务器地址！！！", "友情提示");
return;
}
serverList.Add(this.txtServer.Text.Trim());
serverMap.Add(this.txtServer.Text.Trim(), int.Parse(this.numport.Value+""));
bindComServer();
MessageBox.Show("添加成功！！！", "友情提示");
}
// 删除服务
private void button2_Click(object sender, EventArgs e)
{
if (MessageBox.Show("确定要删除服务吗？", "删除前确认", MessageBoxButtons.YesNo) == DialogResult.No)
{
return;
}
string delserver = comdelServer.Text.Trim();
if (serverList.Contains(delserver))
{
serverList.Remove(delserver);
serverMap.Remove(delserver);
}
bindComServer();
}
// 保存服务列表(保存到txt中)
private void saveServerCmb()
{
ArrayList dataList = new ArrayList();
if (this.serverMap != null && this.serverMap.Count > 0)
{
foreach (string s in this.serverMap.Keys)
{
string appendtext = s + "," + serverMap[s];
dataList.Add(appendtext);
}
FileUtil.saveFile(SERVER_BACK_UP_PATH, dataList);
}
}
#endregion
#region 收件邮箱地址
private void initGrdEmail()
{
// 假如数据文件存在
if (File.Exists(EmailFrom_BACK_UP_PATH))
{
ArrayList datas = FileUtil.readFile(EmailFrom_BACK_UP_PATH);
// 数据存在
if (datas != null && datas.Count > 0)
{
// 清空数据
emailFroms.Clear();
// 遍历
foreach (string s in datas)
{
emailFroms.Add(s.Trim());
int vRownumber = this.grdEmails.Rows.Add();
this.grdEmails.Rows[vRownumber].Cells[0].Value = s.Trim();
}
}
}
}
// 邮箱地址添加到GridView中
private void btnEmailAdd_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(this.txtEamilTo.Text.Trim()))
{
if (this.txtEamilTo.ForeColor == Color.Red)
{
MessageBox.Show("输入的收件箱格式不正确！");
}
else
{
emailFroms.Add(this.txtEamilTo.Text.Trim());
int vRownumber = this.grdEmails.Rows.Add();
this.grdEmails.Rows[vRownumber].Cells[0].Value = this.txtEamilTo.Text.Trim();
this.txtEamilTo.Text = string.Empty;
}
}
}
// 邮箱地址 删除
private void btnRemove_Click(object sender, EventArgs e)
{
if (this.grdEmails.Rows.Count > 0)
{
// 只可选中一条，进行删除
// int vCurrentIndex = this.grdEmails.CurrentRow.Index;
// this.grdEmails.Rows.RemoveAt(vCurrentIndex);
// 支持多选删除
foreach (DataGridViewRow vrow in grdEmails.SelectedRows)
{
int vIndex = vrow.Index;
this.grdEmails.Rows.RemoveAt(vIndex);
emailFroms.RemoveAt(vIndex);
}
}
}
// 邮箱地址 清空
private void btnClear_Click(object sender, EventArgs e)
{
this.grdEmails.Rows.Clear();
emailFroms.Clear();
}
// 保存邮箱到txt
private void saveGrdEmail()
{
ArrayList dataList = new ArrayList();
if (this.emailFroms != null && this.emailFroms.Count > 0)
{
foreach (string s in this.emailFroms)
{
dataList.Add(s);
}
FileUtil.saveFile(EmailFrom_BACK_UP_PATH, dataList);
}
}
#endregion
#region 验证邮箱输入是否正确，不正确是，字体显示为红色
// 验证 发件邮箱是否正确
private void txtEmailTo_Leave(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(this.txtEamilTo.Text.Trim()))
{
bool a = IsEmail(this.txtEamilTo.Text);
// 如果不为 邮箱，字体变为红色
if (IsEmail(this.txtEamilTo.Text.Trim()) == false)
{
this.txtEamilTo.ForeColor = Color.Red;
}
else
{
this.txtEamilTo.ForeColor = Color.Black;
}
}
}
private bool IsEmail(string vEmail)
{
return System.Text.RegularExpressions.Regex.IsMatch(vEmail, @"^([w-.]+)@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.)|(([w-]+.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(]?)$");
}
// 验证 收件箱邮箱是否正确
private void txtEamilFrom_Leave(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(this.txtEamilFrom.Text.Trim()))
{
bool a = IsEmail(this.txtEamilFrom.Text);
// 如果不为 邮箱，字体变为红色
if (IsEmail(this.txtEamilFrom.Text.Trim()) == false)
{
this.txtEamilFrom.ForeColor = Color.Red;
}
else
{
this.txtEamilFrom.ForeColor = Color.Black;
}
}
}
#endregion
#region 参数
// 保存 附件文件路径
private ArrayList Files = new ArrayList();
// 设置SMTP协议
private SmtpClient vSmtpClient = null;
// 设置发件人地址，需要密码
private MailAddress vMailAddressFrom = null;
// 设置收件人地址，不需要密码
private MailAddress vMailAddressTo = null;
// 附件文件流vMailAddressFrom
private FileStream vFileStream = null;
private MailMessage vMailMessage = null;
#endregion
#region 附件操作(支持多选，可以同时上传多个附件)
private void btnFileSelect_Click(object sender, EventArgs e)
{
OpenFileDialog vOpenSelectFile = new OpenFileDialog();
vOpenSelectFile.Multiselect = true;
vOpenSelectFile.Filter = "全部文件|*.*|Excel文件|*.xlsx;*.xls|Csv文件|*.csv";
vOpenSelectFile.FilterIndex = 2;
vOpenSelectFile.RestoreDirectory = true;
if (vOpenSelectFile.ShowDialog() == DialogResult.OK)
{
string message = "";
for (int i = 0; i < vOpenSelectFile.FileNames.Length; i++)
{
if (Check_File(vOpenSelectFile.FileNames[i].ToString(), out message))
{
Files.Add(vOpenSelectFile.FileNames[i].ToString());
int vRownumber = this.grdAttach.Rows.Add();
this.grdAttach.Rows[vRownumber].Cells[0].Value = vOpenSelectFile.FileNames[i].ToString();
}
else
{
appendLogLn(message);
}
}
}
}
// 附件 清空
private void btnClearAttach_Click(object sender, EventArgs e)
{
this.grdAttach.Rows.Clear();
Files.Clear();
}
// 附件 删除
private void btnDelattach_Click(object sender, EventArgs e)
{
if (this.grdAttach.Rows.Count > 0)
{
// 只可选中一条，进行删除
// int vCurrentIndex = this.grdEmails.CurrentRow.Index;
// this.grdEmails.Rows.RemoveAt(vCurrentIndex);
// 支持多选删除
foreach (DataGridViewRow vrow in grdAttach.SelectedRows)
{
int vIndex = vrow.Index;
this.grdAttach.Rows.RemoveAt(vIndex);
Files.RemoveAt(vIndex);
}
}
}
#endregion
#region 验证页面必填项是否已经完善
private bool CheckPage()
{
if (string.IsNullOrEmpty(this.comServer.Text))
{
MessageBox.Show("请输入SMTP服务器名称", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return false;
}
else if (string.IsNullOrEmpty(this.txtEamilFrom.Text))
{
MessageBox.Show("请输入发件人邮箱地址", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return false;
}
else if (string.IsNullOrEmpty(this.txtformPwd.Text))
{
MessageBox.Show("请输入发件人邮箱密码", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return false;
}
else if (this.grdEmails.Rows.Count < 1)
{
MessageBox.Show("请输入收件人邮箱地址", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return false;
}
else if (string.IsNullOrEmpty(this.txtEmailtitle.Text))
{
MessageBox.Show("请输入邮件标题", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return false;
}
return true;
}
#endregion
#region 邮件发送
// 设置SMTP服务器信息
private void SetSmtpClient(string vServerHost)
{
vSmtpClient = new SmtpClient();
// SMTP服务器的名称
vSmtpClient.Host = vServerHost;
// 指定端口号
vSmtpClient.Port = serverMap[vServerHost];
// 超时时间
vSmtpClient.Timeout = 0;
}
// 验证发件人信息
private void SetAddressForm(string vMailAddress, string vMailPwd)
{
// 创建服务器认证
NetworkCredential vNetwork = new NetworkCredential(vMailAddress, vMailPwd);
// 实例化 发件人地址
vMailAddressFrom = new MailAddress(vMailAddress, "");
// 指定发件人信息，包括邮箱地址和邮箱密码
vSmtpClient.Credentials = new NetworkCredential(vMailAddressFrom.Address, vMailPwd);
}
// 检测附件大小
private bool Check_File(string vFilePath, out string vInfo)
{
try
{
vFileStream = new FileStream(vFilePath, FileMode.Open);
}
catch (Exception e)
{
vInfo = "文件名为：" + vFilePath + "的文件被占用或者不能打开。";
return false;
}
string vFileName = vFileStream.Name;
int vSize = Convert.ToInt32(vFileStream.Length / 1024 / 1024);
vFileStream.Close();
if (vSize > 15)
{
vInfo = "文件名为：" + vFileName + "的文件大小大于15M，不允许上传。";
return false;
}
vInfo = string.Empty;
return true;
}
// 发送
private void btnSaveTo_Click(object sender, EventArgs e)
{
// 必填项验证通过
if (CheckPage())
{
// 初始化Smtp服务器信息
SetSmtpClient(this.comServer.Text.Trim());
// 验证发件邮箱地址和密码
SetAddressForm(this.txtEamilFrom.Text.Trim(), this.txtformPwd.Text.Trim());
vMailMessage = new MailMessage();
// 添加收件人邮箱地址
foreach (DataGridViewRow vRow in grdEmails.Rows)
{
vMailAddressTo = new MailAddress(vRow.Cells[0].Value.ToString().Trim());
vMailMessage.To.Add(vMailAddressTo);
}
// 发件人邮箱
vMailMessage.From = vMailAddressFrom;
// 邮件主题
vMailMessage.Subject = this.txtEmailtitle.Text.Trim();
vMailMessage.SubjectEncoding = System.Text.Encoding.UTF8;//字体使用的编码
// 邮件正文
vMailMessage.Body = this.txtEmailBody.Text.Trim();
vMailMessage.BodyEncoding = System.Text.Encoding.UTF8;
// 清空历史附件，以防附件重复发送
vMailMessage.Attachments.Clear();
// 添加附件
for (int i = 0; i < Files.Count; i++)
{
vMailMessage.Attachments.Add(new Attachment(Files[i].ToString().Trim(), MediaTypeNames.Application.Octet));
}
// 注册邮件发送完毕后的处理事件
vSmtpClient.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
appendLogLn("发送中...");
// 开始发送邮件
vSmtpClient.SendAsync(vMailMessage, "000000000");
}
}
// 发送邮件后所处理的函数
private void SendCompletedCallback(object sender, AsyncCompletedEventArgs e)
{
try
{
if (e.Cancelled)
{
appendLogLn("发送已取消！");
}
if (e.Error != null)
{
appendLogLn("邮件发送失败！" + "
" + "技术信息:
" + "请验证，发件邮箱和密码是否正确！" );
}
else
{
appendLogLn("恭喜邮件成功发出!");
}
}
catch (Exception Ex)
{
appendLogLn("邮件发送失败");
}
}
#endregion
#region 日志操作
// 清空日志
private void btnClearLog_Click(object sender, EventArgs e)
{
this.txtlog.Clear();
}
// 不换行追加
public void appendLog(string message)
{
this.txtlog.AppendText(message);
}
// 指定加完空几行
public void appendLogLastLn(string message, int linenum)
{
appendLog(message);
if (linenum == 0) return;
for (int i = 0; i < linenum; i++)
{
appendLog("
");
}
}
// 换行追加
public void appendLogLn(string message)
{
appendLogLastLn(message, 1);
}
#endregion
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
// 保存服务器地址
saveServerCmb();
// 保存邮箱
saveGrdEmail();
}
}
}
以上就是我实现的邮件发送系统的源码，本次实现未考虑是否会被归于垃圾箱和发送限制，有想法和建议的同学们，欢迎评论。
结语
- 受益，掌握了C#邮件发送
本站文章为 宝宝巴士 SD.Team 原创，转载务必在明显处注明：（作者官方网站： 宝宝巴士 )
转载自【宝宝巴士SuperDo团队】 原文链接: http://www.cnblogs.com/superdo/p/4719135.html