Keeping the image format on thumbnail

[Roy Halvorsen]

All thumbnails are saved in .png format. How can I keep the original image's format on thumbnails? If I edit on a .jpg image, I want the thumbnail also to be a .jpg image.
This is what I have tried with no success:

protected void RadImageEditor1_ImageSaving(object sender, ImageEditorSavingEventArgs args)
{
    var thumbImage = args.Image.Clone();
    var pathToThumbs = "~/Filarkiv/thumb/";
    thumbImage.Resize(96, 96);

    var ms = new MemoryStream();
    thumbImage.Image.Save(ms, args.Image.RawFormat);
    File.WriteAllBytes(String.Format("{0}{1}.{2}", MapPath(pathToThumbs), args.FileName, args.Image.Format), byte[])ms.ToArray());
}

Roy

[Roy Halvorsen]

Forget this. The solution was simple:

var fileformat = Path.GetExtension(RImgEditor.ImageUrl);

var thumbImage = args.Image.Clone();
var pathToThumbs = "~/Filarkiv/thumb/";
thumbImage.Resize(96, 96);

var ms = new MemoryStream();
thumbImage.Image.Save(ms, args.Image.RawFormat);
File.WriteAllBytes(String.Format("{0}{1}{2}", MapPath(pathToThumbs), args.FileName, fileformat), (byte[])ms.ToArray());

Roy