asp.net 发送邮件代码 System.Net.Mail

前台页面 SendEmail.aspx 代码 

using System.Net.Mail;
using System.Net;

<h2>

        发送电子邮件演示

    </h2>

    <table cellpadding="0" cellspacing="0" border="0" style="font-family: 宋体, Arial, Helvetica, sans-serif;

        font-size: 15px; width: 411px;">

        <tr>

            <td class="style5">

                邮箱地址：

            </td>

            <td class="style6">

                <asp:TextBox ID="tb_Email" runat="server" Width="269px"></asp:TextBox>

            </td>

        </tr>

        <tr>

            <td class="style5">

                抄送至：

            </td>

            <td class="style6">

                <asp:TextBox ID="tb_cc" runat="server" Width="268px"></asp:TextBox>

            </td>

        </tr>

        <tr>

            <td class="style5">

                邮件主题：

            </td>

            <td class="style6">

                <asp:TextBox ID="tb_Subject" runat="server" Width="268px"></asp:TextBox>

            </td>

        </tr>

        <tr>

            <td class="style5">

                邮件内容：

            </td>

            <td class="style6">

                <asp:TextBox ID="tb_Body" runat="server" Height="63px" TextMode="MultiLine" Width="266px"></asp:TextBox>

            </td>

        </tr>

        <tr>

            <td class="style5">

                添加附件：

            </td>

            <td class="style6">

                <asp:FileUpload ID="tb_Attachment" runat="server" Width="265px" />

            </td>

        </tr>

        <tr>

            <td align="right" colspan="2">

                <asp:Button ID="btn_SendEmail" runat="server" Text="发送邮件" OnClick="btn_SendEmail_Click" />

            </td>

        </tr>

    </table>

后台SendEmail.aspx.cs代码

protected void btn_SendEmail_Click(object sender, EventArgs e)

        {

            //声明一个Mail对象

            MailMessage mymail = new MailMessage();

            //发件人地址

            //如是自己，在此输入自己的邮箱

            mymail.From = new MailAddress("[email protected]");

            //收件人地址

            mymail.To.Add(new MailAddress(tb_Email.Text));

            //邮件主题

            mymail.Subject = tb_Subject.Text;

            //邮件标题编码

            mymail.SubjectEncoding = System.Text.Encoding.UTF8;

            //发送邮件的内容

            mymail.Body = tb_Body.Text;

            //邮件内容编码

            mymail.BodyEncoding = System.Text.Encoding.UTF8;

            //添加附件

            Attachment myfiles = new Attachment(tb_Attachment.PostedFile.FileName);

            mymail.Attachments.Add(myfiles);

            //抄送到其他邮箱

            mymail.CC.Add(new MailAddress(tb_cc.Text));

            //是否是HTML邮件

            mymail.IsBodyHtml = true;

            //邮件优先级

            mymail.Priority = MailPriority.High;

            //创建一个邮件服务器类

            SmtpClient myclient = new SmtpClient();

            myclient.Host = "SMTP.163.com"; 

            //SMTP服务端口

            myclient.Port = 25;

            //验证登录

            myclient.Credentials = new NetworkCredential("@@@@@@", "*****");//"@"输入有效的邮件名, "*"输入有效的密码

            myclient.Send(mymail);

        }