After several days of tracking down bizarre GDI+ errors, I've stumbled across this little gem on MSDN: Classes within the System.Drawing namespace are not supported for use within a Windows or A...

As I'm bringing in images into my program, I want to determine if: they have an alpha-channel if that alpha-channel is used #1 is simple enough with using Image.IsAlphaPixelFormat. For #2 thoug...

I'm trying to create an image on a bitmap using C#. Somehow it always adds grey border on all sides of the image. Many questions have been posted with the solution and I have tried almost all of th...

This code fails when trying to call Image.Save(MemoryStream, ImageFormat). I get the exception: a Value cannot be null.Parameter name: encoder" ImageFormat format = generatedImage.RawFormat ...

Is it possible to get the extension, for any given System.Drawing.Imaging.ImageFormat? (C#) Example: System.Drawing.Imaging.ImageFormat.Tiff -> .tif System.Drawing.Imaging.ImageFormat.Jpeg -&g...

My code enumerates a metafile: private void Parse() { Graphics graphics = Graphics.FromHwnd(IntPtr.Zero); PointF pointf = new PointF(); graphics.EnumerateMetafile(_metafile, pointf, ParseCallba...

I need to load GIF animations and convert them frame by frame to bitmaps. To do that, I am extracting my GIF file frame by frame using Drawing.Imaging library and then casting each frame to bitmap....

I'm completely new to image processing in ASP.NET. I am very familiar with Photoshop, and image magick to some degree. I am trying to figure out what the difference is between Quality and Compress...

I've been able to create a Format48bppRgb .PNG file (from some internal HDR data) using the the following C# code: Bitmap bmp16 = new Bitmap(_viewer.Width, _viewer.Height, System.Drawing.Imaging.P...

I just got a real surprise when I loaded a jpg file and turned around and saved it with a quality of 100 and the size was almost 4x the original. To further investigate I open and saved without exp...