How can I get .NET to save this image?

Question

I have this JPEG image, that opens fine in Picasa, Photoshop, web browser, etc., but in .NET it just refuses to work.

 Image image = Image.FromFile(@"myimage.jpg");
 image.Save(@"myimage2.jpg");
 // ExternalException - A generic error occurred in GDI+.

Is there a way to recover it in .NET so I can work with it (I need to resize it), without fixing the problem at the source?

Full exception details:

source: System.Drawing
type: System.Runtime.InteropServices.ExternalException
message: A generic error occurred in GDI+.
stack trace:
at System.Drawing.Image.Save(String filename, ImageCodecInfo encoder, EncoderParameters encoderParams)
   at System.Drawing.Image.Save(String filename, ImageFormat format)
   at System.Drawing.Image.Save(String filename)
   at ConsoleApplication20.Program.Main(String[] args) in C:\Users\sam\Desktop\S
ource\ConsoleApplication20\ConsoleApplication20\Program.cs:line 16

This issue is reproducible on Windows 7.

Answer 1

This seems to work:

    using (Image image = Image.FromFile(@"c:\dump\myimage.jpg"))
    using (Image clone = new Bitmap(image))
    {
        clone.Save(@"c:\dump\myimage2.jpg", ImageFormat.Jpeg);
    }

image is actually a Bitmap anyway, so it should be similar. Oddly myimage2 is 5k smaller - the joys of jpeg ;-p

A nice thing about this is that you can resize at the same time (your actual intent):

    using (Image image = Image.FromFile(@"c:\dump\myimage.jpg"))
    using (Image clone = new Bitmap(image,
        new Size(image.Size.Width / 2, image.Size.Height / 2)))
    {

        clone.Save(@"c:\dump\myimage2.jpg", ImageFormat.Jpeg);
    }

Answer 2

Try explicitly specifying the format:

using (Image image = Image.FromFile(@"test.jpg"))
{
    image.Save(@"myimage2.gif", ImageFormat.Gif);
}

All ImageFormat.Png, ImageFormat.Bmp and ImageFormat.Gif work fine. ImageFormat.Jpeg throws an exception.

The original image is in the JFIF format as it starts with FF D8 FF E0 bytes.