A generic error occurred in GDI+, JPEG Image to MemoryStream

Question

This seems to be a bit of an infamous error all over the web. So much so that I have been unable to find an answer to my problem as my scenario doesn\'t fit. An exception ge

Answer 1

Save image to bitmap variable

using (var ms = new MemoryStream())
{
    Bitmap bmp = new Bitmap(imageToConvert);
    bmp.Save(ms, format);
    return ms.ToArray();
}

Answer 2

My turn!

using (System.Drawing.Image img = Bitmap.FromFile(fileName))
{
      ... do some manipulation of img ...
      img.Save(fileName, System.Drawing.Imaging.ImageFormat.Jpeg);
}

Got it on the .Save... because the using() is holding the file open, so I can't overwrite it. Maybe this will help someone in the future.

Answer 3

I notice that your "jpeg" case is actually:

            default:
                format = ImageFormat.Jpeg;
                break;

Are you sure that the format is jpeg and not something else?

I'd try:

            case "image/jpg": // or "image/jpeg" !
                format = ImageFormat.Jpeg;
                break;

Or check what imageToConvert.MimeType() is actually returning.

UPDATE

Is there any other initialisation you need to do to the MemoryStream object?

Answer 4

Simple, create a new instance of Bitmap solves the problem.

string imagePath = Path.Combine(Environment.CurrentDirectory, $"Bhatti{i}.png");
Bitmap bitmap = new Bitmap(image);
bitmap.Save(imagePath);

Answer 5

We had a similar problem on generating a PDF or resize image using ImageProcessor lib on production server.

Recycle the application pool fix the issue.

Answer 6

byte[] bts = (byte[])page1.EnhMetaFileBits; 
using (var ms = new MemoryStream(bts)) 
{ 
    var image = System.Drawing.Image.FromStream(ms); 
    System.Drawing.Image img = image.GetThumbnailImage(200, 260, null, IntPtr.Zero);      
    img.Save(NewPath, System.Drawing.Imaging.ImageFormat.Png);
}