C# 使用 asp.net 发送带有嵌入图像的邮件
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原文地址: http://stackoverflow.com/questions/1113345/
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sending mail along with embedded image using asp.net
提问by Tushar Maru
sending mail along with embedded image using asp.net
使用 asp.net 发送带有嵌入图像的邮件
I have already used following but it can't work
我已经使用了以下但它无法工作
Dim EM As System.Net.Mail.MailMessage = New System.Net.Mail.MailMessage(txtFrom.Text, txtTo.Text)
Dim A As System.Net.Mail.Attachment = New System.Net.Mail.Attachment(txtImagePath.Text)
Dim RGen As Random = New Random()
A.ContentId = RGen.Next(100000, 9999999).ToString()
EM.Attachments.Add(A)
EM.Subject = txtSubject.Text
EM.Body = "<body>" + txtBody.Text + "<br><img src='cid:" + A.ContentId +"'></body>"
EM.IsBodyHtml = True
Dim SC As System.Net.Mail.SmtpClient = New System.Net.Mail.SmtpClient(txtSMTPServer.Text)
SC.Send(EM)
采纳答案by Alex Peck
If you are using .NET 2 or above you can use the AlternateView and LinkedResource classes like this:
如果您使用 .NET 2 或更高版本，您可以像这样使用 AlternateView 和 LinkedResource 类：
string html = @"<html><body><img src=""cid:YourPictureId""></body></html>";
AlternateView altView = AlternateView.CreateAlternateViewFromString(html, null, MediaTypeNames.Text.Html);
LinkedResource yourPictureRes = new LinkedResource("yourPicture.jpg", MediaTypeNames.Image.Jpeg);
yourPictureRes.ContentId = "YourPictureId";
altView.LinkedResources.Add(yourPictureRes);
MailMessage mail = new MailMessage();
mail.AlternateViews.Add(altView);
Hopefully you can deduce the VB equivalent.
希望你能推导出 VB 等价物。
回答by FlashTrev
After searching and trying must be four or five 'answers' I felt I had to share what I finally found to actually work as so many people seem to not know how to do this or some give elaborate answers that so many others have issues with, plus a few do and only give a snippet answer which then has to be interpreted. As I don't have a blog but I'd like to help others here is some full code to do it all. Big thanks to Alex Peck, as it's his answer expanded on.
经过搜索和尝试必须有四五个“答案”，我觉得我必须分享我最终发现的实际工作，因为很多人似乎不知道如何做到这一点，或者有些人给出了很多其他人有问题的详尽答案，加上一些做并且只给出一个片段答案，然后必须对其进行解释。因为我没有博客，但我想帮助其他人，这里有一些完整的代码来完成这一切。非常感谢亚历克斯派克，因为这是他的答案扩展。
inMy.aspx asp.net file
inMy.aspx asp.net 文件
<div>
<asp:LinkButton ID="emailTestLnkBtn" runat="server" OnClick="sendHTMLEmail">testemail</asp:LinkButton>
</div>
inMy.aspx.cs code behind c# file
c# 文件后面的 inMy.aspx.cs 代码
protected void sendHTMLEmail(object s, EventArgs e)
{
/* adapted from http://stackoverflow.com/questions/1113345/sending-mail-along-with-embedded-image-using-asp-net
and http://stackoverflow.com/questions/886728/generating-html-email-body-in-c-sharp */
string myTestReceivingEmail = "[email protected]"; // your Email address for testing or the person who you are sending the text to.
string subject = "This is the subject line";
string firstName = "John";
string mobileNo = "07711 111111";
// Create the message.
var from = new MailAddress("[email protected]", "displayed from Name");
var to = new MailAddress(myTestReceivingEmail, "person emailing to's displayed Name");
var mail = new MailMessage(from, to);
mail.Subject = subject;
// Perform replacements on the HTML file (which you're using as a template).
var reader = new StreamReader(@"c:\Temp\HTMLfile.htm");
string body = reader.ReadToEnd().Replace("%TEMPLATE_TOKEN1%", firstName).Replace("%TEMPLATE_TOKEN2%", mobileNo); // and so on as needed...
// replaced this line with imported reader so can use a templete ....
//string html = body; //"<html><body>Text here <br/>- picture here <br /><br /><img src=""cid:SACP_logo_sml.jpg""></body></html>";
// Create an alternate view and add it to the email. Can implement an if statement to decide which view to add //
AlternateView altView = AlternateView.CreateAlternateViewFromString(body, null, MediaTypeNames.Text.Html);
// Logo 1 //
string imageSource = (Server.MapPath("") + "\logo_sml.jpg");
LinkedResource PictureRes = new LinkedResource(imageSource, MediaTypeNames.Image.Jpeg);
PictureRes.ContentId = "logo_sml.jpg";
altView.LinkedResources.Add(PictureRes);
// Logo 2 //
string imageSource2 = (Server.MapPath("") + "\booking_btn.jpg");
LinkedResource PictureRes2 = new LinkedResource(imageSource2, MediaTypeNames.Image.Jpeg);
PictureRes2.ContentId = "booking_btn.jpg";
altView.LinkedResources.Add(PictureRes2);
mail.AlternateViews.Add(altView);
// Send the email (using Web.Config file to store email Network link, etc.)
SmtpClient mySmtpClient = new SmtpClient();
mySmtpClient.Send(mail);
}
HTMLfile.htm
HTML文件.htm
<html>
<body>
<img src="cid:logo_sml.jpg">
<br />
Hi %TEMPLATE_TOKEN1% .
<br />
<br/>
Your mobile no is %TEMPLATE_TOKEN2%
<br />
<br />
<img src="cid:booking_btn.jpg">
</body>
</html>
in your Web.Config file, inside your < configuration > block you need the following to allow testing in a TempMail folder on your c:\drive
在您的 Web.Config 文件中，在您的 <configuration> 块中，您需要以下内容以允许在 c:\drive 上的 TempMail 文件夹中进行测试
<system.net>
<mailSettings>
<smtp deliveryMethod="SpecifiedPickupDirectory" from="[email protected]">
<specifiedPickupDirectory pickupDirectoryLocation="C:\TempMail"/>
</smtp>
</mailSettings>
</system.net>
the only other things you will need at the top of your aspx.cs code behind file are the Using System includes (if I've missed one out you just right click on the unknown class and choose the 'Resolve' option)
在 aspx.cs 文件后面的代码顶部，您唯一需要的其他内容是使用系统包含（如果我错过了一个，您只需右键单击未知类并选择“解决”选项）
using System.Net.Mail;
using System.Text;
using System.Reflection;
using System.Net.Mime; // need for mail message and text encoding
using System.IO;
Hope this helps someone and big thanks to the above poster for giving the answer needed to get the job done (as well as the other link in my code).
希望这对某人有所帮助，非常感谢上面的海报提供完成工作所需的答案（以及我代码中的其他链接）。
It works but im open to improvements.
它有效，但我愿意改进。
cheers.
干杯。
