1.发送邮件
首先引用using System.Net;和using System.Net.Mail;两个命名空间
void Button1_Click(object sender, EventArgs e)
{
//1、创建发送邮件的客户端对象
SmtpClient smtp = new SmtpClient("smtp.sina.cn");//smtp.sina.cn为新浪的SMTP
//4、创建MailAddress对象,分别构建成发送者和接收者
MailAddress from = new MailAddress(发送者账号);
MailAddress to = new MailAddress(TextBox1.Text.Trim());
//3、创建对象出来,发现里面需要两个MailAddress对象,分别是发送者和接受者
MailMessage mess = new MailMessage(from,to);
//5、填充邮件标题行
mess.Subject = TextBox2.Text.Trim();
//6、填充邮件内容
mess.Body = TextBox3.Text;
//8、创建发送者的验证证书
NetworkCredential cred = new NetworkCredential(发送者账号", 发送者密码);
//7、邮件客户端证书设置
smtp.Credentials = cred;
//2、调用客户端对象的发送方法,看到里面需要一个MailMessage对象
smtp.Send(mess);
}