There are many ways! https://halfblood.pro/the-story-about-net-cross-platform-ui-frameworks-dd4a9433d0ea https://halfblood.pro/the-story-about-net-cross-platfo

There are many ways! https://halfblood.pro/the-story-about-net-cross-platform-ui-frameworks-dd4a9433d0ea https://halfblood.pro/the-story-about-net-cross-platform-ui-... I like to use Xaml. For iOS/Android there are solutions, too.