在asp.net 2.0中发送邮件

1、在web.config中的<configuration>内加入如下配置信息（host—smtp服务地址；port—端口号；userName—用户名；password—密码。请自行修改）。
<system.net>

<mailSettings>

<smtp>

<network host="smtpserver" port="25" userName="uid" password="pwd" />

</smtp>

</mailSettings>

</system.net>

2、aspx页面HTML代码

<table border="0">

<tr>

<td>

发件人

</td>

<td>

<asp:TextBox runat="server" ID="emailfrom"></asp:TextBox>

</td>

</tr>

<tr>

<td>

收件人

</td>

<td>

<asp:TextBox runat="server" ID="emailto"></asp:TextBox>

</td>

</tr>

<tr>

<td>

主题

</td>

<td>

<asp:TextBox runat="server" ID="subject"></asp:TextBox>

</td>

</tr>

<tr>

<td>

附件

</td>

<td>

<asp:FileUpload ID="attachment" runat="server" />

</td>

</tr>

<tr>

<td>

内容

</td>

<td>

<asp:TextBox runat="server" ID="body" TextMode="MultiLine" Columns="50" Rows="10"></asp:TextBox>

</td>

</tr>

<tr>

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

<asp:Button runat="server" ID="btnSend" Text="发送" OnClick="btnSend_Click" />

</td>

</tr>

</table>

3、实例化一个MailMessage并设置其属性

MailMessage mm = new MailMessage(emailfrom.Text, emailto.Text);

mm.Subject = subject.Text;

mm.Body = body.Text;

// HTML格式

mm.IsBodyHtml = true;

// 添加附件

mm.Attachments.Add(new Attachment(attachment.PostedFile.InputStream, attachment.FileName));

//*其他如抄送、优先级之类的都可以在MailMessage类的属性中设置*/

4、实例化一个SmtpClient，调用其Send方法，参数为MailMessage对象

SmtpClient sc = new SmtpClient();

// 编程方式设置smtp（不用web.config）

// sc.Host = "";

// sc.Port = 25;

// sc.Credentials = new NetworkCredential("username", "password");

try

{

sc.Send(mm);

Response.Write("ok");

}

catch (Exception ex)

{

// 与smtp相关的错误

if (ex is SmtpException)

{

// ex.ToString();

Response.Write("smtp发信失败");

}

else

{

Response.Write(ex.ToString());

}

}
转载:http://www.cnblogs.com/webabcd/archive/2007/01/03/610735.html