c#Asp.Net简单实现发送电子邮件的功用

 阅读全文并下载实例：http://www.cckan.net/forum.php?mod=viewthread&tid=56

这个例子很简单，初学者可以看一下，写的很明白，注释都加了大家看一下就行了， 呵呵

实现的方法如下：

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Net.Mail;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            MailMessage objMail = new MailMessage();

            //发件人地址
            objMail.From = new MailAddress(txtForm.Text.ToString().Trim());
            //邮件标题
            objMail.Subject = txttitle.Text.ToString().Trim();
            //邮件标题编码 
            objMail.SubjectEncoding = System.Text.Encoding.UTF8;
            //邮件内容
            objMail.Body = txtBody.Text.ToString().Trim();
            //邮件内容编码 
            objMail.BodyEncoding = System.Text.Encoding.UTF8;
            //收件人地址在这里可以加多个
            objMail.To.Add(txtTO.Text.ToString().Trim());
            //用SMTP发送邮件的方式
            SmtpClient client = new SmtpClient();
            //用户名和密码
            client.Credentials = new System.Net.NetworkCredential(txtForm.Text.ToString().Trim(), txtPwd.Text.ToString().Trim());
            //服务器名
            client.Host = "SMTP.163.com";
            //发送
            client.Send(objMail);
            ClientScriptManager csm = this.ClientScript;
            csm.RegisterStartupScript(this.GetType(), "sufei", "发送成功");
        }
        catch (Exception ex)
        {
            ClientScriptManager csm = this.ClientScript;
            csm.RegisterStartupScript(this.GetType(), "sufei", ex.Message.ToString().Trim());
        }


    }
}

 也可以写在方法里面，这样用起来方便一点点

  /// <summary>
        /// 发送邮件
        /// </summary>
        /// <param name="MailFromAddress">发件人地址</param>
        /// <param name="MailFromUserName">用户名</param>
        /// <param name="MailFormPwd">密码</param>
        /// <param name="MailTitle">邮件标题</param>
        /// <param name="MailBody">邮件内容</param>
        /// <param name="MailTo">收件人地址</param>
        /// <returns>发送成功返回True否则返回False</returns>
        public static  Boolean SendMail(string MailFromAddress, string MailFormPwd, string MailTitle, string MailBody, string MailTo)
        {
            try
            {
                MailMessage objMail = new MailMessage();
                //发件人地址
                objMail.From = new MailAddress(MailFromAddress);
                //邮件标题
                objMail.Subject = MailTitle;
                //邮件标题编码 
                objMail.SubjectEncoding = System.Text.Encoding.UTF8;
                //邮件内容
                objMail.Body = MailBody;
                //邮件内容编码 
                objMail.BodyEncoding = System.Text.Encoding.UTF8;
                //收件人地址在这里可以加多个
                objMail.To.Add(MailTo);
                //用SMTP发送邮件的方式
                SmtpClient client = new SmtpClient();
                //用户名和密码
                client.Credentials = new System.Net.NetworkCredential(MailFromAddress, MailFormPwd);
                string StrMail = "";
                for (int i = 0; i < MailFromAddress.Length; i++)
                {
                    if (MailFromAddress.Substring(i, 1).ToString().Trim() == "@")
                    {
                        StrMail = MailFromAddress.Substring(i + 1, MailFromAddress.Length - i - 1);
                    }
                }
                //服务器名
                client.Host = "smtp." + StrMail.ToString().Trim();
                //发送
                client.Send(objMail);
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

 使用方法

 try
        {
            if (MessageSendServices.SendMail(txtFrom.Text.ToString().Trim(), txtFromPwd.Text.ToString().Trim(), txtTitle.Text.ToString().Trim(), txtNeiRong.Text.ToString().Trim(), txtTo.Text.ToString().Trim()))
            {
                ClientScriptManager csm = this.ClientScript;
                csm.RegisterStartupScript(this.GetType(), "one", "<span style='color:red; font-size: 18px;'>" + "邮件发送成功" + "</span>");
            }
            else
            {
                ClientScriptManager csm = this.ClientScript;
                csm.RegisterStartupScript(this.GetType(), "one", "<span style='color:red; font-size: 18px;'>" + "邮件发送失败" + "</span>");
            }
        }
        catch (Exception)
        {
            ClientScriptManager csm = this.ClientScript;
            csm.RegisterStartupScript(this.GetType(), "one", "<span style='color:red; font-size: 18px;'>" + "下发时发生异常信息" + "</span>");
        }