C# – A generic error occurred in GDI+

bitmapcgdi+

I loaded an image into a Picture Box using:

picturebox1.Image = Image.FromFile()

and I save it by using:

Bitmap bm = new Bitmap(pictureBox1.Image);
bm.Save(FileName, ImageFormat.Bmp);

It works perfectly fine when creating a new file, but when I try to replace the existing image, I get thrown the following runtime error:

A generic error occurred in GDI+

So what can I do to solve this problem??

Best Answer

That because the image file is used by your picturebox1.Image, try to save it to different file path instead:

picturebox1.Image = Image.FromFile(FileName);
Bitmap bm = new Bitmap(pictureBox1.Image); 
bm.Save(@"New File Name", ImageFormat.Bmp);

Edit: You could also add a copy from the image at the first place like:

picturebox1.Image = new Bitmap(Image.FromFile(FileName));
Bitmap bm = new Bitmap(pictureBox1.Image); 
bm.Save(FileName, ImageFormat.Bmp);//no error will occurs here.

Related Solutions

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

OK I seem to have found the cause just by sheer luck and its nothing wrong with that particular method, it's further back up the call stack.

Earlier I resize the image and as part of that method I return the resized object as follows. I have inserted two calls to the above method and a direct save to a file.

// At this point the new bitmap has no MimeType
// Need to output to memory stream
using (var m = new MemoryStream())
{
       dst.Save(m, format);

       var img = Image.FromStream(m);

       //TEST
       img.Save("C:\\test.jpg");
       var bytes = PhotoEditor.ConvertImageToByteArray(img);


       return img;
 }

It appears that the memory stream that the object was created on has to be open at the time the object is saved. I am not sure why this is. Is anyone able to enlighten me and how I can get around this.

I only return from a stream because after using the resize code similar to this the destination file has an unknown mime type (img.RawFormat.Guid) and Id like the Mime type to be correct on all image objects as it makes it hard write generic handling code otherwise.

EDIT

This didn't come up in my initial search but here's the answer from Jon Skeet

C# – A generic error occurred in GDI+

Take a look at the big "Caution" note in the System.Drawing documentation. All kinds of weird stuff can happen when you use something intended for desktop processing in a service process.

Check the usuals like permissions, path existence, framework version, etc.

Best Answer

Related Solutions

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

C# – A generic error occurred in GDI+

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