SmtpClient发送邮件

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用163邮箱发送邮件

<pre name="code" class="csharp">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;using System.Net.Mail;namespace smtp{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            MailMessage mail = new MailMessage();            mail.From = new MailAddress("user");            //利用MailMessage.To.Add方法增加要发送的邮件地址              mail.To.Add(textBox1 .Text .Trim ());            mail.Subject = textBox2.Text.Trim();            mail.Body = richTextBox1.Text;            mail.IsBodyHtml = false;            mail.Priority = MailPriority.High;            SmtpClient smtp = new SmtpClient();            smtp.Host = "smtp.163.com";            //要输入邮箱用户名与密码              smtp.Credentials = new NetworkCredential("user","password");            try            {                smtp.Send(mail);                MessageBox.Show("发送成功！");            }            catch (Exception ex)            {                MessageBox.Show(ex.Message );            }        }    }}

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