Email: how to set a name of the embedded image in C# / System.Mail?

Question

I'm trying to send email with embedded images in it from C#. When I receive this email in Gmail, embedded images do not have proper names - instead, they are displayed as "noname" - see screenshot below

Here is how I embed images into email:

foreach (var objimage in images)
{
    var ms = new MemoryStream(objimage.ImageBytes);
    var lr = new LinkedResource(ms, MediaTypeNames.Image.Jpeg);
    lr.ContentId = "Photo_" + (++i).ToString();
    lstImages.Add(lr);

    body += string.Format("<img src='cid:{0}' alt='{1}' name='{1}' title='{1}' />", lr.ContentId, objimage.ImageName);
}

looking at this question: How to stop embedded images in email being displayed as attachments by GMail? - and comparing body of my email, it looks like i need to set Content-Type field to be

Content-Type: image/jpeg; name="my image name.png""

whereas currently my email looks like this:

----boundary_3_d581d04c-d294-4dc5-971e-785a678fbd12
Content-Type: image/jpeg
Content-Transfer-Encoding: base64
Content-ID: <Photo_1>

any idea how I can do this with C# and System.Mail?

Thanks.

Answer 1

well, answer turns out to be very simple:

lr.ContentType.Name = "my image name.jpg";

credits to Send html email with embedded image and plain text with same image as attachment in C#

Answer 2

if image is not coming in IE use below linkedResource = new LinkedResource(src, MediaTypeNames.Image.Jpeg); //abbukmailer.com

Answer 3

For attachments

Content-Disposition: attachment; fileName=<Your file name>

Regarding to RFC

For linked resource must be something simillar