A generic error occurred in GDI+ when resizing image in MemoryStream

Question

I am using ImageProcessor to process images in my website.

I have this resize function:

 public Image ResizePhoto6version(Image img, int width, int height)
    {
        using (var ms = new MemoryStream())
        {
            using (var imgf = new ImageFactory(false))
            {
                imgf.Load(img)
                    .Resize(new ResizeLayer(new Size(width, height), ResizeMode.Max))
                    .Save(ms);

                return Bitmap.FromStream(ms);
            }
        }
    }

In the webservice, I run this code:

MemoryStream ytSmallStream = new MemoryStream();
MemoryStream ytMediumStream = new MemoryStream();
System.Drawing.Image ytSmallThumb = null;
System.Drawing.Image ytMediumThumb = null;

ytSmallThumb.Save(ytSmallStream, ImageFormat.Jpeg);
ytSmallStream.Position = 0;

ytMediumThumb.Save(ytMediumStream, ImageFormat.Jpeg);
ytMediumStream.Position = 0;

I get an exception when it reached the Save function ytSmallThumb.Save():

A generic error occurred in GDI+

The image is returned correctly from ResizeThumbnailToSmall function and the Stream has information of the image with the right size.

Bonehead

I'm pretty sure your problem is that FromStream requires the underlying stream to remain open, yet is being disposed in the ResizePhoto6version method (by way of the using). From MSDN: "You must keep the stream open for the lifetime of the Image." msdn.microsoft.com/en-us/library/… – Cholecystotomy

Possible duplicate of Image.Save(..) throws a GDI+ exception because the memory stream is closed – Cholecystotomy

@Cholecystotomy I will try that, so I should convert to bytes instead and return that? – Bonehead

No, just remove the first using from the ResizePhoto6version method (leave it simply as var ms=new MemoryStream();) . It's a memory stream, no need to dispose it really. See Jon's answer in the duplicate; just make sure to Dispose the bitmap/image when you're done and it will close the stream for you – Cholecystotomy

@Cholecystotomy correct! Thank you. – Bonehead

@pinkfloydx33Would you write an answer and I accept? – Bonehead

No because this is a duplicate. Perhaps there is a better one then the dupe I suggested, but either way this question will eventually get closed... Its been asked and answered many times before. – Cholecystotomy

Answer 1

ImageProcessor makes me crazy today, it throws "A generic error occurred in GDI+" exception everytime I resize PNG files. and after Recycle the application pool I don't see the exception anymore.

Hope it help.

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