使用base64字符串的C＃LinkedResource

Question

如何将此==> url('data:image/jpeg;base64,/9j/4AAQSkZJRgABAgEASABIAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB')放入new System.Net.Mail.LinkedResource()

使用带有base64字符串的后台css样式，而不是文件url，从C＃发送邮件。

Answer 1

我自己想知道这件事，并得到了这篇文章。 我解决了它，并认为我会分享我的解决方案。

var imageData = Convert.FromBase64String("/9j/4AAQSkZJRgABAgEASABIAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB");

var contentId = Guid.NewGuid().ToString();
var linkedResource = new LinkedResource(new MemoryStream(imageData), "image/jpeg");
linkedResource.ContentId = contentId;
linkedResource.TransferEncoding = TransferEncoding.Base64;

var body = string.Format("<img src=\"cid:{0}\" />", contentId);
var htmlView = AlternateView.CreateAlternateViewFromString(body, null, "text/html");
htmlView.LinkedResources.Add(linkedResource);