Asp.net验证码

Question

求代码问完三个问题继续写程序

Answer 1

建立一个类sendEmail.cs代码为:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Net.Mail;
using System.Net;/// <summary>
///sendEmail 的摘要说明
/// </summary>
public class sendEmail
{
public sendEmail()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
    /// <summary>
    /// 向用户发送邮件
    /// </summary>
    /// <param name="receiveUser">接收邮件的用户</param>
    /// <param name="sendUser">发送者</param>
    /// <param name="sendusername">发送者的邮箱登陆名</param>
    /// <param name="userpassword">发送者的登陆密码</param>
    /// <param name="sendTitle">发送标题</param>
    /// <param name="sendContent">发送的内容</param>
    /// <returns></returns>
    public void sendMail(string receiveUser, string sendUser, string sendusername, string userpassword, string sendTitle, string sendContent)
    {
       
            MailAddress to = new MailAddress(receiveUser);//接收者邮箱    
            MailAddress from = new MailAddress(sendUser);//发送者邮箱    
            System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage(from, to);
            //mail.To.Add("[email protected]");//添加接收者                mail.Subject = sendTitle;
            mail.IsBodyHtml = true;
            mail.Body = sendContent;
            SmtpClient client = new SmtpClient();
            client.Host = "smtp.163.com";//设置发送者邮箱对应的smtpserver    
            client.UseDefaultCredentials = false;
            client.Credentials = new NetworkCredential(sendusername, userpassword);//设置发送者邮箱对应的username和password    
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            client.Send(mail);
      
            }}btn事件
        sendEmail se = new sendEmail();
       // se.sendMail("[email protected]","wj","zhaoenyu888","95125923","您好测试","测试中");
        se.sendMail("[email protected]", "[email protected]", "liebe_a", "808288", "千机购物重设密码信", "aa");
        System.Windows.Forms.MessageBox.Show("发送成功");引用空间名:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Net.Mail;
using System.Net;