我正在创建一个带有 html 正文的 System.Net.Mail 消息。我将客户签名的 jpeg 图像(来自字节数组)附加到电子邮件并发送到服务中心。服务中心希望无需打开附件即可查看签名,因此我更改了 html 并再次将图像添加为 LinkedResource。问题是,现在附件比以前大,尝试查看附件时显示错误。如果我保存附件并在十六进制编辑器中打开文件,则整个文件为空。我可以评论添加链接资源的代码,并且附件再次起作用。如何包含内嵌图像和附件?
这是我嵌入图像的标签:<p><img src=cid:CustomerSignature /></p>
这是我的代码:
System.IO.MemoryStream ms = new System.IO.MemoryStream(insuranceClaim.Signature, 0, insuranceClaim.Signature.Length);
ms.Position = 0;
System.Net.Mime.ContentType contentType = new System.Net.Mime.ContentType();
contentType.MediaType = System.Net.Mime.MediaTypeNames.Image.Jpeg;
contentType.Name = "signature.jpg";
System.Net.Mail.Attachment imageAttachment = new System.Net.Mail.Attachment(ms, contentType);
System.Net.Mime.ContentDisposition disposition = imageAttachment.ContentDisposition;
mailMessage.Attachments.Add(imageAttachment);
System.Net.Mail.LinkedResource signature = new System.Net.Mail.LinkedResource(ms, new System.Net.Mime.ContentType("image/jpeg"));
signature.ContentId = "CustomerSignature";
System.Net.Mail.AlternateView aView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(mailMessage.Body, new System.Net.Mime.ContentType("text/html"));
aView.LinkedResources.Add(signature);
mailMessage.AlternateViews.Add(aView);