asp.net 发送邮件

把代码贴出来，供大家参考
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net.Mail;
/// <summary>
/// SendMail 的摘要说明
/// </summary>
public class SendMail
{
    /// <summary>
    /// 发送邮件，不能发送附件。
    /// </summary>
    /// <param name="send">发件人地址</param>
    /// <param name="recieve">收件人地址</param>
    /// <param name="subject">邮件主题</param>
    /// <param name="mailbody">邮件内容允许是html</param>
    /// <param name="host">发件主机</param>
    /// <param name="pwd">密码</param>
    public void SendMailUseGmail(string send, string recieve, string subject, string mailbody, string host, string pwd,Page page)
    {
        try
        {
            System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
            client.Host = host;
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential(send, pwd);
           
            client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;

            System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();
            message.To.Add(recieve); message.From = new System.Net.Mail.MailAddress(send, "派遣168网", System.Text.Encoding.UTF8);
            message.Subject = subject;
            message.Body = mailbody;
            message.BodyEncoding = System.Text.Encoding.UTF8;
            message.IsBodyHtml = true;
            //添加附件
            //System.Net.Mail.Attachment data = new Attachment(@"附件地址如：e:/a.jpg", System.Net.Mime.MediaTypeNames.Application.Octet);
            //message.Attachments.Add(data);

            client.Send(message);
            System.Web.UI.ScriptManager.RegisterStartupScript(page, this.GetType(), "success", "alert('邮件发送成功！');", true);

        }
        catch (Exception ex)
        {

            System.Web.UI.ScriptManager.RegisterStartupScript(page, this.GetType(), "eeror", "alert('邮件发送失败！"+ex.Message+"');", true);
        }

    }

    /// <summary>
    /// 发送邮件，不能发送附件。
    /// </summary>
    /// <param name="send">发件人地址</param>
    /// <param name="recieve">收件人地址</param>
    /// <param name="subject">邮件主题</param>
    /// <param name="mailbody">邮件内容允许是html</param>
    /// <param name="host">发件主机</param>
    /// <param name="sendname">发件人的称呼</param>
    /// <param name="pwd">密码</param>
    public bool SendMailUseGmail(string send, string recieve, string subject, string mailbody, string host, string pwd,string sendname, Page page)
    {
        try
        {
            System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
            client.Host = host;
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential(send, pwd);

            client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;

            System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();
            message.To.Add(recieve); message.From = new System.Net.Mail.MailAddress(send, sendname, System.Text.Encoding.UTF8);
            message.Subject = subject;
            message.Body = mailbody;
            message.BodyEncoding = System.Text.Encoding.UTF8;
            message.IsBodyHtml = true;
            //添加附件
            //System.Net.Mail.Attachment data = new Attachment(@"附件地址如：e:/a.jpg", System.Net.Mime.MediaTypeNames.Application.Octet);
            //message.Attachments.Add(data);

            client.Send(message);
            return true;
            //System.Web.UI.ScriptManager.RegisterStartupScript(page, this.GetType(), "success", "alert('邮件发送成功！');", true);

        }
        catch (Exception ex)
        {
            return false;
            //System.Web.UI.ScriptManager.RegisterStartupScript(page, this.GetType(), "eeror", "alert('邮件发送失败！" + ex.Message + "');", true);
        }

    }
}