[Solved]-Exception when converting to image from Base-64 string-Highcharts

After many researches I found the solution , the main problem was that not all client email support data URI : What is Data URI support like in major email client software?

i was trying to open the mail from the outlook 2016 however it is not supported , when i opened from hotmail.com it worked..

the code is :

MailMessage mailMsg = new MailMessage();
SmtpClient client = new SmtpClient();
var imageData = Convert.FromBase64String(data);
var contentId = Guid.NewGuid().ToString();
var linkedResource = new LinkedResource(new MemoryStream(imageData), "image/svg+xml");
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);
 mailMsg.AlternateViews.Add(htmlView);