using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Net.Mail;using System.Net.Mime;using System.Net;using System.IO; namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        //基于面向人工智能设计        private void Form1_Load(object sender, EventArgs e)        {        }        private void btnOk_Click(object sender, EventArgs e)        {            if (yes.Text == "" || txtTestName.Text=="")            {                MessageBox.Show("你没有输入任何内容！");            }else            try            {                //确定smtp服务器地址。实例化一个Smtp客户端                System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("smtp.qq.com", 25);//pop.exmail.qq.com //smtp.qq.com                client.EnableSsl = true;//指定 SmtpClient 使用安全套接字层 (SSL) 加密连接                //生成一个发送地址                string strFrom = "5160665XX@qq.com";                //构造一个发件人地址对象                MailAddress from = new MailAddress(strFrom, "天意", Encoding.UTF8);                //构造一个收件人地址对象                MailAddress to = new MailAddress(txtTestName.Text, "随缘", Encoding.UTF8);                //构造一个Email的Message对象                MailMessage message = new MailMessage(from, to);                //添加邮件主题和内容                message.Subject = "主题：Smina用户测试！" ;                message.SubjectEncoding = Encoding.UTF8;                message.Body = "内容：测试邮件" + yes.Text; //得到用户输入的文本 即发送的内容                message.BodyEncoding = Encoding.UTF8;                //设置邮件的信息                client.DeliveryMethod = SmtpDeliveryMethod.Network;                message.BodyEncoding = System.Text.Encoding.UTF8;                message.IsBodyHtml = true;                //设置用户名和密码。                client.UseDefaultCredentials = false;                string username = "5160665XX@qq.com";  //你的邮箱账号                string passwd = "ipzuuXXXXXbjjb";//你的授权码，你的密码无法登陆，授权码为如esscncukoftqe****的 一串序号 申请地址https://mail.qq.com/                //用户登陆信息                NetworkCredential myCredentials = new NetworkCredential(username, passwd);                client.Credentials = myCredentials;                //发送邮件                client.Send(message);                MessageBox.Show("邮件发送成功，感谢你的支持！");            }            catch            {                MessageBox.Show("邮件发送失败");            }                }    }}