.Net中简单实现发送邮件

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());             }         }

转载于:https://www.cnblogs.com/delin/archive/2010/06/13/1757507.html