.NET App Developer Links - 2020-04-23

• 35: Creatings Tools for Xamarin.Forms. With Steven Thewissen

• C# 8.0 nullable references: embrace the expressiveness

• How to use VSIXSignTool

• My First Challenge: Join the Xamarin + Cognitive Services Crazy Combo Challenge!

• Shadows in Windows (UWP) XAML Applications - Part 1b - ThemeShadow in Lists

• Show unnecessary imports in the Visual Studio's error window

• The Cognitive Services + Xamarin Combo Challenge!

• Visual Studio Tips 5