使用 asp.net 发送邮件和嵌入的图像
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【中文标题】使用 asp.net 发送邮件和嵌入的图像【英文标题】:sending mail along with embedded image using asp.net 【发布时间】:2010-11-09 22:41:07 【问题描述】:使用 asp.net 发送邮件和嵌入图像
我已经用过following但是不能用
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)
【问题讨论】:
【参考方案1】:感谢其他答案,我设法让它工作-唯一的区别是图像的目录-如果图像与应用程序的目录相同,则可以使用例如:Directory.GetCurrentDirectory() + @"\ClientApp\public\img\blur.jpg
public void SendMail(string receiver, string subject, string content)
SmtpClient client = new SmtpClient(emailServiceConfig.SmtpServer);
client.EnableSsl = true; // Important ###
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential(emailServiceConfig.Username, emailServiceConfig.Password);
MailMessage mailMessage = new MailMessage();
mailMessage.From = new MailAddress(emailServiceConfig.From);
mailMessage.To.Add(receiver);
//mailMessage.Body = content;
mailMessage.Subject = subject;
//Adding image =============================================
string html = @$"<html><body><img src=""cid:PageScreenshot"">content</body></html>";
AlternateView altView = AlternateView.CreateAlternateViewFromString(html, null, MediaTypeNames.Text.Html);
LinkedResource screenshotRes = new LinkedResource(Directory.GetCurrentDirectory() + @"\ClientApp\public\img\screeenshot2.jpg", MediaTypeNames.Image.Jpeg);
screenshotRes.ContentId = "PageScreenshot";
altView.LinkedResources.Add(screenshotRes);
mailMessage.AlternateViews.Add(altView);
client.Send(mailMessage);
【讨论】:
【参考方案2】:在搜索和尝试之后必须有四五个“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,或者有些人给出了许多其他人的详尽答案问题,加上一些问题,只给出一个 sn-p 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 Alex Peck,因为这是他的答案扩展。
inMy.aspx asp.net 文件
<div>
<asp:LinkButton ID="emailTestLnkBtn" runat="server" OnClick="sendHTMLEmail">testemail</asp:LinkButton>
</div>
c#文件后面的inMy.aspx.cs代码
protected void sendHTMLEmail(object s, EventArgs e)
/* adapted from http://***.com/questions/1113345/sending-mail-along-with-embedded-image-using-asp-net
and http://***.com/questions/886728/generating-html-email-body-in-c-sharp */
string myTestReceivingEmail = "yourEmail@address.com"; // 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("emailFrom@address.co.uk", "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>
<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>
在您的 Web.Config 文件中,在您的
<system.net>
<mailSettings>
<smtp deliveryMethod="SpecifiedPickupDirectory" from="madeupEmail@address.com">
<specifiedPickupDirectory pickupDirectoryLocation="C:\TempMail"/>
</smtp>
</mailSettings>
</system.net>
在您的 aspx.cs 代码隐藏文件顶部您需要的唯一其他东西是使用系统包含(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;
希望这对某人有所帮助,非常感谢上面的海报给出了完成工作所需的答案(以及我代码中的其他链接)。
它有效,但我愿意改进。
干杯。
【讨论】:
【参考方案3】:如果您使用的是 .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);
希望你能推断出 VB 等价物。
【讨论】:
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