Convert SixLabors.ImageSharp.Image to System.Drawing.Image?

[SoftCircuits]

I have a WinForms application with a PictureBox control. Is there any way to convert a SixLabors.ImageSharp.Image to a System.Drawing.Image short of writing it to a file and reloading it?

FWIW, my only interest here is in resizing an image.

[JimBobSquarePants]

Check out this class from the test utilities. It contains methods to copy pixel data to/from ImageSharp images to System.Drawing ones.

https://github.com/SixLabors/ImageSharp/blob/b06cb32b7114961fd5473f7645d38f8fee04ec64/tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/SystemDrawingBridge.cs

[antonfirsov]

@SoftCircuits you need the method To32bppArgbSystemDrawingBitmap() there.

Note that it's code can be simplified a lot by removing the generic argument from the method and fixing the pixel type to Bgra32. The pixel data of an Image<Bgra32> can be directly copied to a Bitmap of PixelFormat.Format32bppArgb. (The difference between the component order is not a typo!)

In that case both workBuffer and the following call is becomes unnecessary:

ImageSharp/tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/SystemDrawingBridge.cs

Line 159 in b06cb32

PixelOperations<TPixel>.Instance.ToBgra32(configuration, row, workBuffer.GetSpan());

Instead of the conversion you can just copy Span<TPixel> row to the buffer starting at destPtr.