C#使用GMAIL羣髮帶附件郵件的例子

 

說明：

 

做一個要羣發郵件的Excel表，包含：

 

ID，

姓名，

郵箱

 

三列，多個郵箱間用“;”間隔開。

 

對於不同附件的文件名必須包含ID。 

using System;
using System.Data;
using System.Windows.Forms;
using System.Data.OleDb;
using System.Net.Mail;
using System.Net;
using System.IO;
namespace Ferry
{
    public partial class MassSendMail : Form
    {
        public MassSendMail()
        {
            InitializeComponent();
        }
        private void MassSendMail_Load(object sender, EventArgs e)
        {
        }
        /// <summary>
        /// 統一的附件
        /// </summary>
        private void btnSameAttach_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "所有文件|*.*";
            ofd.ShowDialog();
            txtSameAttach.Text = ofd.FileName;
        }
        /// <summary>
        /// 不同的附件，必須放在相同目錄
        /// </summary>
        private void btnDiffAttach_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            fbd.ShowDialog();
            txtDiffAttach.Text = fbd.SelectedPath;
        }
        private void btnMassSendList_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "Excel文件(*.xlsx;*.xls)|*.xlsx;*.xls";
            ofd.ShowDialog();
            txtMassSendList.Text = ofd.FileName;
        }
        private void MassSendMail_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (MessageBox.Show("確定要退出嗎？退出將丟失窗口中所有信息！", "警告", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
                == DialogResult.No)
            {
                e.Cancel = true;
            }
        }
        private void btnQuit_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        private void btnSend_Click(object sender, EventArgs e)
        {
            SendMail();
        }
        private void SendMail()
        {
            this.btnSend.Enabled = false;
            #region 讀取設置的信息
            //郵件主題
            String strMailSubject = txtMailSubject.Text.Trim();
            //郵件內容
            String strMailBody = txtMailBody.Text.Trim();
            //統一附件文件目錄
            String strSameFilePath = txtSameAttach.Text.Trim();
            //不同附件目錄
            String strDiffFoderPath = txtDiffAttach.Text.Trim();
            //羣發列表文件路徑
            String strMassSendList = txtMassSendList.Text.Trim();
            //郵箱
            String strMail = txtYourMail.Text.Trim();
            //郵箱密碼
            String strPassword = txtYourMailPassword.Text.Trim();
            //顯示姓名
            String strDisplayName = txtDisplayName.Text.Trim();
            #endregion
            #region 驗證必填信息
            if (strMailSubject.Length == 0)
            {
                MessageBox.Show("請輸入郵件主題！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.btnSend.Enabled = true;
                return;
            }
            if (strMailBody.Length == 0)
            {
                MessageBox.Show("請輸入郵件內容！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.btnSend.Enabled = true;
                return;
            }
            if (strMassSendList.Length == 0)
            {
                MessageBox.Show("請選擇羣發郵件列表Excel文件！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.btnSend.Enabled = true;
                return;
            }
            if (strMail.Length == 0)
            {
                MessageBox.Show("請輸入郵箱！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.btnSend.Enabled = true;
                return;
            }
            if (strPassword.Length == 0)
            {
                MessageBox.Show("請輸入郵箱密碼！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.btnSend.Enabled = true;
                return;
            }
            #endregion
            #region 讀取羣發郵件列表
            string connectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=Excel 12.0;Persist Security Info=False", strMassSendList);
            OleDbDataAdapter da = new OleDbDataAdapter("SELECT * FROM [MailList$]", connectionString);
            DataTable dt = new DataTable();
            try
            {
                da.Fill(dt);
            }
            catch (Exception err)
            {
                MessageBox.Show("從Excel中獲取數據失敗：" + err.Message);
                return;
            }
            DataRow[] emptyRows = dt.Select("ID = '' OR ID IS NULL OR ID = 'ID'");
            foreach (DataRow row in emptyRows)
            {
                dt.Rows.Remove(row);
            }
            dt.AcceptChanges();
            dt.PrimaryKey = new DataColumn[] { dt.Columns["ID"] };
            #endregion
            foreach (DataRow dr in dt.Rows)
            {
                MailMessage mess = new MailMessage();
                if (strDisplayName.Length != 0)
                {
                    mess.From = new MailAddress(strDisplayName + "<" + strMail + ">");
                }
                else
                {
                    mess.From = new MailAddress(strMail);
                }
                #region 設置郵件
                mess.Subject = strMailSubject.Replace("{Name}", dr["姓名"].ToString());
                mess.Body = strMailBody.Replace("{Name}", dr["姓名"].ToString());
                mess.IsBodyHtml = true;
                String[] strMailAddr = dr["郵箱"].ToString().Trim().Split(';');
                for (Int32 i = 0; i < strMailAddr.Length; i++)
                {
                    if (strMailAddr[i].Trim().Length != 0)
                    {
                        mess.To.Add(strMailAddr[i]);
                    }
                }
                #endregion
                #region 添加附件
                if (strSameFilePath.Length != 0)
                {
                    mess.Attachments.Add(new Attachment(strSameFilePath));
                }
                if (strDiffFoderPath.Length != 0)
                {
                    String[] files = Directory.GetFiles(strDiffFoderPath);
                    for (Int32 j = 0; j < files.Length; j++)
                    {
                        if (files[j].ToUpper().Trim().IndexOf(dr["ID"].ToString().Trim().ToUpper()) > 0)
                        {
                            mess.Attachments.Add(new Attachment(files[j]));
                        }
                    }
                }
                #endregion
                #region
                SmtpClient sc = new SmtpClient();
                sc.Host = "smtp.gmail.com";
                sc.Port = 587;
                sc.Credentials = new NetworkCredential(strMail + "@gmail.com", strPassword);
                sc.DeliveryMethod = SmtpDeliveryMethod.Network;
                sc.EnableSsl = true;
                try
                {
                    sc.Send(mess);
                    this.txtSendMessage.Text += dr["姓名"].ToString() + "......成功/r/n";
                }
                catch
                {
                    this.txtSendMessage.Text += dr["姓名"].ToString() + "......失敗/r/n";
                }
                #endregion
            }
            this.btnSend.Enabled = true;
            MessageBox.Show("郵件羣發已完成！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
        private void menuQuit_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        private void menuSaveMessage_Click(object sender, EventArgs e)
        {
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "文本文件(*.txt)|*.txt";
            DialogResult r = sfd.ShowDialog();
            String filePath = sfd.FileName.Trim();
            if (r != DialogResult.Cancel)
            {
                FileStream fs;
                if (File.Exists(filePath))
                {
                    fs = File.Open(filePath, FileMode.Append);
                }
                else
                {
                    fs = File.Open(filePath, FileMode.Create);
                }
                StreamWriter sw = new StreamWriter(fs);
                sw.Write(this.txtSendMessage.Text);
                sw.Close();
                fs.Close();
                GC.Collect();
                MessageBox.Show("發送記錄已保存！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }
        private void menuHelp_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Process.Start("郵件羣發工具使用說明.docx");
        }
        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (this.WindowState != FormWindowState.Minimized)
            {
                this.WindowState = FormWindowState.Minimized;
                this.ShowInTaskbar = false;
            }
            else
            {
                this.WindowState = FormWindowState.Normal;
                this.ShowInTaskbar = true;
            }
        }
        private void contextMenuQuit_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}