private byte[] GetDataFromUrl(string dataUrl, out string contentType)
{
// https://gist.github.com/vbfox/484643
var match = Regex.Match(dataUrl, @"data:image/(?<type>.+?);base64,(?<data>.+)");
var type = match.Groups["type"].Value;
var base64Data = match.Groups["data"].Value;
var binData = Convert.FromBase64String(base64Data);
contentType = "image/" + type;
return binData;
}