C#发送电子邮件

 
/// <summary>
/// 发送电子邮件
/// </summary>
/// <param name="from">发件人</param>
/// <param name="to">收件人</param>
/// <param name="subject">邮件主题</param>
/// <param name="body">邮件内容</param>
/// <param name="host">发送服务地址(smtp.qq.com)</param>
/// <param name="port">发送邮件服务器端口(25) int型</param>
/// <param name="userName">用户名</param>
/// <param name="password">密码</param>
public void Send(string from,string to,string subject,string body,string host,int port,string userName,string password)
{
    MailMessage message = new MailMessage(from,to,subject,body);
    message.IsBodyHtml = true;
    SmtpClient client = new SmtpClient(host,port);
    client.Credentials = new System.Net.NetworkCredential(userName,password);
    client.Send(message);
}