邮件发送.net 的实现 vs2008 可以加附件

 1using System;
 2using System.Text;
 3using System.Net.Mail;
 4
 5
 6
 7
 8public partial class EmailTest : System.Web.UI.Page
 9{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnSendMail_Click(object sender, EventArgs e)
    {
        Encoding encoding = Encoding.GetEncoding("GB2312");

        string address = txtMailAddress.Text.Trim();
        string biaoti = txtMailTitle.Text.Trim();
        string content = txtMailContent.Text.Trim();

        MailAddress from = new MailAddress("YourUserName@163.com", "SiteMap工作室", encoding);

        MailAddress to = new MailAddress(address);

       

        MailMessage mail = new MailMessage(from ,to);
           
                      
        mail.Subject = biaoti ;

        mail.Body = content;

        mail.SubjectEncoding = encoding;

        mail.BodyEncoding = encoding;

        //附件问题
        if (fileattach.HasFile)
        {
            //这两种方式都可以使用 Attachment fileAttachment= new Attachment(fileattach.PostedFile.InputStream, fileattach.FileName);
            Attachment fileAttachment = new Attachment(fileattach.PostedFile.FileName);

            mail.Attachments.Add(fileAttachment);
        }

        SmtpClient smtp = new SmtpClient("smtp.163.com");

        smtp.DeliveryMethod = SmtpDeliveryMethod.Network;

        smtp.UseDefaultCredentials = true;

        smtp.Credentials = new System.Net.NetworkCredential("YourUserName@163.com", "password");

        smtp.Send(mail);

        Response.Write("邮件发送成功！");
        

    }
}

前台代码
<h2>EmailTest</h2>
    <p>&nbsp;</p>
    <p>
        邮件标题：<asp:TextBox ID="txtMailTitle" runat="server" Width="360px"></asp:TextBox>
    </p>
    <p>
        给谁发信：<asp:TextBox ID="txtMailAddress" runat="server" Width="360px"></asp:TextBox></p>
                       <p>
                           正文内容：(添加附件)－<asp:FileUpload ID="fileattach" runat="server" />
    </p>
    <p>
        <asp:TextBox ID="txtMailContent" runat="server" Height="300px" Width="460px" TextMode="MultiLine"
            ></asp:TextBox>
    </p>
    <p>
        <asp:Button ID="btnSendMail" runat="server" Text="发送消息"
            onclick="btnSendMail_Click" />
    </p>