发送邮件嵌入图片

最新推荐文章于 2021-07-17 14:34:31 发布

转载最新推荐文章于 2021-07-17 14:34:31 发布 · 1.7k 阅读

文章标签：

#email #object #image #string #each #html

本文介绍如何使用C#编程语言通过SMTP服务发送包含内联图片的HTML格式邮件。具体步骤包括创建HTML消息体、设置AlternateView与LinkedResource对象来嵌入图片，并通过SmtpClient对象发送邮件。

Introduction

Sending and receiving emails is a daily task for almost every professional, and programmers are not different. Sending emails and attachment is considered a trivial task, and all programming platforms support this feature.

Background

You can send an email with images as external links, but most email clients block external links. There is another way around to send images as part of an email.

Using the code

The following code is self explanatory. Here, we go:

Create a string that contains the HTML message to send.
Create an AlternateView object for supporting the HTML.
Create a LinkedResource object for the image to send.
Add a LinkedResource object to the AlternateView object.
Create a Mailmesasge object and set its To, From, and Subject properties.
Add an AlternateView object to the MailMessage object.
Create an SmtpClient object and send the MailMessage object.

Collapse | Copy Code

using System.Net.Mail;

string htmlBody = "<html><body><h1>Picture</h1><br><img src=\"cid:Pic1\"></body></html>";
AlternateView avHtml = AlternateView.CreateAlternateViewFromString
    (htmlBody, null, MediaTypeNames.Text.Html);

// Create a LinkedResource object for each embedded image
LinkedResource pic1 = new LinkedResource("pic.jpg", MediaTypeNames.Image.Jpeg);
pic1.ContentId = "Pic1";
avHtml.LinkedResources.Add(pic1);


// Add the alternate views instead of using MailMessage.Body
MailMessage m = new MailMessage();
m.AlternateViews.Add(avHtml);

// Address and send the message
m.From = new MailAddress("rizwan@dotnetplayer.com", "Rizwan Qureshi");
m.To.Add(new MailAddress("shayan@dotnetplayer.com", "Shayan Qureshi"));
m.Subject = "A picture using alternate views";
SmtpClient client = new SmtpClient("smtp.dotnetplayer.com");
client.Send(m);