.net 2.0 中发送Email

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转载最新推荐文章于 2026-06-15 15:09:15 发布 1.6k 阅读 AI 写同款· GEO 优化 ›

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.net 2.0 中发送Email

在 .net 2.0 中发送邮件将使用到新增的 SmtpClient 类，并且可以在配置文件中加入 mailSettings 元素来配置 smtp。下面以 asp.net 为例写的 demo.

在 web.config 文件添加

<system.net>
    <mailSettings>
        <smtp>
            <network host="localhost" port="25" userName="your username"
                password="your password"/>
        </smtp>
    </mailSettings>
</system.net>

发送简单的文本格式的邮件

<%@ Page Language="C#" %>

<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.Net.Mail" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    protected void SendEmail_Click (object sender, EventArgs e)
    {
        MailMessage mm = new MailMessage (tbxUsersEmail.Text,
            tbxUsersEmail.Text);

        mm.Subject = tbxSubject.Text;
        mm.Body = tbxBody.Text;
        mm.IsBodyHtml = false;

        SmtpClient smtp = new SmtpClient ();

        smtp.Send (mm);
        Response.Write ("Completed!");
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>SendMail</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <table border="0">
                <tr>
                    <td>
                        <b>Your Email:</b></td>
                    <td>
                        <asp:TextBox runat="server" ID="tbxUsersEmail" Columns="30">
                        </asp:TextBox>
                        <asp:RequiredFieldValidator ID="RequiredFieldValidator1"
                                runat="server" ControlToValidate="tbxUsersEmail"
                            ErrorMessage="Must input your email.">*
                        </asp:RequiredFieldValidator>
                    </td>
                </tr>
                <tr>
                    <td>
                        <b>Subject:</b></td>
                    <td>
                        <asp:TextBox runat="server" ID="tbxSubject" Columns="30">
                        </asp:TextBox>
                        <asp:RequiredFieldValidator ID="RequiredFieldValidator2"
                            runat="server"
                            ControlToValidate="tbxSubject"
                            ErrorMessage="Must input your subject.">*
                        </asp:RequiredFieldValidator>
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <b>Body:</b><br />
                        <asp:TextBox runat="server" ID="tbxBody" TextMode="MultiLine"
                            Columns="55"  Rows="10"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td colspan="2" align="center">
                        <asp:Button runat="server" ID="btnSendEmail"
                             OnClick="SendEmail_Click"  Text="Send Feedback" />
                    </td>
                </tr>
            </table>
        </div>
        <asp:ValidationSummary ID="ValidationSummary1" runat="server"
            ShowMessageBox="True"  ShowSummary="False" />
    </form>
</body>
</html>

发送 HTML 格式的邮件

1 <%@ Page Language="C#" %>
2 <%@ Import Namespace="System.Net" %>
3 <%@ Import Namespace="System.Net.Mail" %>
4
5 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
6
7 <script runat="server">
8     protected void Page_Load (object sender, EventArgs e)
9     {
10         lblContent.Text = @"<h2>This is an HTML-Formatted Email Send Using the
                    <code>IsBodyHtml</code> Property</h2><p>Isn’t HTML <em>neat</em>?</p>
                    <p>You can make all sorts of <span style=""color:red;font-weight:bold;"">
                    pretty colors!!</span>.</p>";
11     }
12
13     protected void SendMail_Click (object sender, EventArgs e)
14     {
15         MailMessage mm = new MailMessage (tbxMail.Text, tbxMail.Text);
16
17         mm.Subject = "HTML-Formatted Email test";
18         mm.Body = lblContent.Text;
19         mm.IsBodyHtml = true;
20
21         SmtpClient smtp = new SmtpClient ();
22
23         smtp.Send (mm);
24         Response.Write ("Completed!");
25     }
26 </script>
27
28 <html xmlns="http://www.w3.org/1999/xhtml" >
29 <head runat="server">
30     <title>SendHtmlMail</title>
31 </head>
32 <body>
33     <form id="form1" runat="server">
34     <div>
35         <asp:Button ID="btnSend" OnClick="SendMail_Click" runat="server"
                Text="Send below context to your mail" />
36         <asp:TextBox ID="tbxMail" runat="server" Width="367px"></asp:TextBox>
37         <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
            ControlToValidate="tbxMail"
38             ErrorMessage="Must input your email.">*</asp:RequiredFieldValidator>
             <br />
39         <br />
40         <asp:Label ID="lblContent" runat="server"></asp:Label><br />
41          <asp:ValidationSummary ID="ValidationSummary1" runat="server"
                ShowMessageBox="True"
42             ShowSummary="False" />
43     </div>
44     </form>
45 </body>
46 </html>
47

发送带有上传附件的邮件

1 <%@ Page Language="C#" %>
2 <%@ Import Namespace="System.Net" %>
3 <%@ Import Namespace="System.Net.Mail" %>
4
5 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
6
7 <script runat="server">
8     protected void SendMail_Click (object sender, EventArgs e)
9     {
10         MailMessage mm = new MailMessage (tbxUsersEmail.Text, tbxUsersEmail.Text);
11
12         mm.IsBodyHtml = false;
13         mm.Subject = "Emailing an Uploaded File as an Attachment Demo";
14         mm.Body = tbxBody.Text;
15         mm.Attachments.Add (
                new Attachment (fuAttachmentFile.PostedFile.InputStream,
                    fuAttachmentFile.FileName));
16
17         SmtpClient smtp = new SmtpClient ();
18
19         smtp.Send (mm);
20         Response.Write ("Completed!");
21     }
22 </script>
23
24 <html xmlns="http://www.w3.org/1999/xhtml" >
25 <head runat="server">
26     <title>Send mail with attachment file.</title>
27 </head>
28 <body>
29     <form id="form1" runat="server">
30     <div>
31     <table border="0">
32     <tr>
33         <td><b>Your Email:</b></td>
34         <td><asp:TextBox runat="server" ID="tbxUsersEmail" Columns="30">
                    </asp:TextBox>
35             <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"
                ControlToValidate="tbxUsersEmail"
36                 ErrorMessage="Must input your email.">*</asp:RequiredFieldValidator>
            </td>
37     </tr>
38     <tr>
39         <td><b>File to Send:</b></td>
40         <td>
41             <asp:FileUpload ID="fuAttachmentFile" runat="server" />
42             <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
                    ControlToValidate="fuAttachmentFile"
43                 ErrorMessage="Must choice upload file">*</asp:RequiredFieldValidator>
            </td>
44     </tr>
45     <tr>
46         <td colspan="2">
47             <b>Body:</b><br />
48             <asp:TextBox runat="server" ID="tbxBody" TextMode="MultiLine"
                    Columns="55"  Rows="10"></asp:TextBox>
49         </td>
50     </tr>
51     <tr>
52         <td colspan="2" align="center">
53             <asp:Button runat="server" ID="btnSendEmail" OnClick="SendMail_Click"
                    Text="Send Feedback" />
54         </td>
55     </tr>
56 </table>
57     </div>
58         <asp:ValidationSummary ID="ValidationSummary1" runat="server"
                ShowMessageBox="True"  ShowSummary="False" />
60     </form>
61 </body>
62 </html>

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