将图像嵌入来自vb.net的电子邮件正文中

Question

我已经严格搜索了这个问题，但无法让它发挥作用。我正在尝试从vb.net应用程序中发送电子邮件，其中图像嵌入在电子邮件正文中。我将它作为附件工作，但在Outlook和其他电子邮件客户端中，图像不显示。图像存储在本地，我想知道它是否与它有关。我尝试首先在字符串中添加图像，但这不起作用;

    emailString.AppendLine()
    emailString.AppendLine()
    emailString.AppendLine("<br />")
    emailString.AppendLine("<br />")
    emailString.AppendLine("<img src =""cid:C:\Users\Public\Pictures\Sample Pictures\br1.gif"" alt='STUPID IMAGE'>")

然后尝试使用linkedresource

的另一种方式

  Sub SendEmail(ByVal errorMessage As String)
    Dim mail As New MailMessage()
    mail.From = New MailAddress("med@person.com", "**DAILY STATS**")
    mail.Subject = "STATS ALERT"
    mail.To.Add("med@person.com")
    mail.IsBodyHtml = True
    'mail.Body = "TEST EMAIL" 'errorMessage
    'mail.BodyEncoding = Encoding.UTF8
    smptpServer.Timeout = 30000
    smptpServer.Credentials = New NetworkCredential("me", "person")
    Dim imageBody As String = " <img src =""cid:C:\Users\Public\Pictures\Sample Pictures\br1.gif"">"
    Dim htmlView As System.Net.Mail.AlternateView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(errorMessage, Nothing, "text/html")
    Dim plainTextView As System.Net.Mail.AlternateView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(errorMessage, Nothing, "text/plain")
    Dim imageResource As New System.Net.Mail.LinkedResource("C:\Users\Public\Pictures\Sample Pictures\br1.gif", MediaTypeNames.Image.Gif)
    Dim attachment As System.Net.Mail.Attachment
    attachment = New System.Net.Mail.Attachment("C:\Users\Public\Pictures\Sample Pictures\br1.gif")
    mail.Attachments.Add(attachment)


   'imageResource.ContentId = "HDIImage"
    htmlView.LinkedResources.Add(imageResource)
    htmlView.TransferEncoding = Net.Mime.TransferEncoding.Base64
    htmlView.ContentType = New System.Net.Mime.ContentType("text/html")
   'mail.AlternateViews.Add(plainTextView)
    mail.AlternateViews.Add(htmlView)
    Try
        smptpServer.Send(mail)




    Catch ex As Exception
        If ex.Message.Contains("Timeout") Then
           Exit Sub
        End If
    End Try

我甚至将图像类型从png更改为gif。正常的手动创建的html表在将其附加到字符串时起作用，但这种方式不起作用。

只显示：

Answer 1

在我看来，如果您的图片附加到电子邮件中，则 src 属性应为“cid：imagename.png”，不带磁盘路径。看看这个：embedding image in html email

Answer 2

对于那些正在寻找有效的 VB.NET 代码的“最终版本”和/或添加多个图像的方法的人来说，这就是我最终的结果。基本上，这会在消息底部的签名中嵌入 2 张图像：

    Image1 = New Net.Mail.LinkedResource(Directory.GetCurrentDirectory + "\mailsrvr\image001.jpg", "image/jpeg")
    Image1.ContentId = Guid.NewGuid().ToString()
    Image2 = New Net.Mail.LinkedResource(Directory.GetCurrentDirectory + "\mailsrvr\image002.jpg", "image/jpeg")
    Image2.ContentId = Guid.NewGuid().ToString()
    Signature = Replace(Replace(Signature, "image001.jpg", Image1.ContentId), "image002.jpg", Image2.ContentId)
    myMessage.Body = myMessage.Body & Signature
    Dim View = Net.Mail.AlternateView.CreateAlternateViewFromString(myMessage(msgInd).Body, Nothing, "text/html")
    View.LinkedResources.Add(Image1)
    View.LinkedResources.Add(Image2)
    myMessage.AlternateViews.Add(View)