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The author:(作者)qqpublished in(发表于) 2014/7/11 9:21:00 C#教程: 电子邮件的发送使用实例
C#教程: 电子邮件的发送使用实例|方法
电子邮件的发送本实例通过使用SMTP协议,实现发送电子邮件功能。实例运行结果如图1和图2所示。图1 “发送邮件”窗体图2 提示信息服务器端实现的具体步骤如下所示。(1)在VS2005工程中添加一个窗体。(2)在窗体中添加3个TextBox文本框,分别用于获取发件人邮箱、收件人邮箱以及主题。(3)在窗体中添加一个Button按钮和3个Label标签,它们分别用于激发事件和显示信息。(4)在窗体中添加一个richTextBox控件,用于书写内容。(5)程序主要代码。首先添加必要的命名空间,代码如下:using System.Net.Mail;using System.IO;using System.Net;自定义一个CreateTimeoutTestMessage方法,该方法中通过MailMessage类与SmtpClient类实例化Mail对象与Client对象,然后使用Mail对象来完成对邮件信息的定制,如收件人、主题和内容等, 最后调用Client对象的Send方法来完成信息的发送功能。CreateTimeoutTest Message方法关键代码如下:public void CreateTimeoutTestMessage(string server){try{Mail = new MailMessage(this.txtFrom.Text, this.txtGet.Text);Mail.Subject =this.txtSubject.Text.Trim().ToString();Mail.Body = this.richTextBox1.Text.Trim().ToString();Client = new SmtpClient(server, 25);Client.Send(Mail);MessageBox.Show("Success!!!");}catch (Exception ey){MessageBox.Show(ey.Message);}}单击【发送】按钮时,程序调用CreateTimeoutTestMessage方法完成邮件发送功能。【发送】按钮的Click事件代码如下:private void button1_Click(object sender, EventArgs e){if (this.richTextBox1.Text.Trim().ToString() != ""){CreateTimeoutTestMessage("hywork");}else{MessageBox.Show("you can not write info");return;}}注意:MailMessage类还提供群发功能以及发送附件(通过Attachments类)的功能。完整程序代码如下:★ ★★★★Form1.cs窗体代码文件完整程序代码★★★★★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;using System.Net.Sockets;using System.IO;namespace _6_06{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){}TcpClient server;string sendstring;byte[] bufferstring;NetworkStream networkstream;StreamReader streamreader;private void button2_Click(object sender, EventArgs e){server = new TcpClient(this.textBox1.Text, 110);networkstream = server.GetStream();streamreader = new StreamReader(networkstream);try{sendstring = "USER "+this.textBox2.Text+"rn";bufferstring = Encoding.GetEncoding("gb2312").GetBytes(sendstring.ToCharArray());networkstream.Write(bufferstring, 0, bufferstring.Length);richTextBox1.AppendText(streamreader.ReadLine() + "rn");sendstring = "PASS " + this.textBox3.Text + "rn";bufferstring = Encoding.GetEncoding("gb2312").GetBytes(sendstring.ToCharArray());networkstream.Write(bufferstring, 0, bufferstring.Length);richTextBox1.AppendText(streamreader.ReadLine() + "rn");sendstring = "STAT " +"rn";bufferstring = Encoding.GetEncoding("gb2312").GetBytes(sendstring.ToCharArray());networkstream.Write(bufferstring, 0, bufferstring.Length);string strResult=streamreader.ReadLine();if (strResult.IndexOf('-') == -1){richTextBox1.AppendText(strResult + "rn");sendstring = "LIST " + "rn";bufferstring = Encoding.GetEncoding("gb2312").GetBytes(sendstring.ToCharArray());networkstream.Write(bufferstring, 0, bufferstring.Length);string strInfo = streamreader.ReadLine();string[] str = strInfo.Split(' ');richTextBox1.AppendText("邮件数量:" + str[1] + "rn");
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