private async Task <Tuple <string, string> > GetImageDataAsync(string id, string imageType)
{
// <img alt="..." src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIA..." />
var image = await _imageFileService.GetImageAsync(id, imageType);
if (image == null)
{
return(Tuple.Create(imageType, (string)null));
}
var data = "data:image/png;base64," + image.ToBase64String();
return(Tuple.Create(imageType, data));
}