I have ported a gauge from winform library, haha yes, I know we need to have better gauge looks ;D
TinyCLR version
but in the desktop version…
you need to make some adjustment in the drawing method, there is some limitations in the drawing library (eg. alpha support, drawarc, lineargradient)…
Go and grab it here: Gravicode/TinyCLR.BitmapGauge: This is gauge component for TinyCLR (github.com)