IIMage Downsize and Resize issues in Windows

[arpetris]

I'm trying to take an input image and create three different sizes. Since the input file could be smaller than my target sizes I tried IImage.Downsize but all the final images were the same size as the input image. Then I tried IImage.Resize but this threw a System.NotImplemented exception.

Am I missing something or are Image.Resize and .Downsize not working in Windows?

Thank you.

[stephenquan]

I would look to SkiaSharp. Depending on your resize requirements, SkiaSharp can be deployed to solve either:

• A file-based resize (where you take an input image and generate 3 new files)
  • Consider using SKBitmap.ScalePixels
• A runtime on-the-fly resampling (where you take an input image but render it at a different resolution)
  • Consider using SKCanvasView, where you can use SKCanvas.DrawBitmap to resample an input image at any resolution

References:

• https://www.nuget.org/packages/SkiaSharp.Views.Maui.Controls
• https://github.com/mono/SkiaSharp
• https://learn.microsoft.com/en-us/dotnet/api/skiasharp.skbitmap.scalepixels?view=skiasharp-2.88
• https://learn.microsoft.com/en-us/dotnet/api/skiasharp.skcanvas.drawbitmap?view=skiasharp-2.88

[arpetris]

Thank you. I thought I'd need to use an external library. But Microsoft's documentation sounded like it should work so I wanted to check that it wasn't me.