Create a C# Windows Desktop App in 9 Lines — No Visual Studio Needed

If you’re new to C# and especially desktop development, here’s how easy it is to get started on a modern Windows 10/11 PC. This way of creating a Hello World C# program doesn’t involve installation of any heavy IDE like Visual Studio or the .NET 8/9 SDK. In fact, most recent Windows versions already come with .NET Framework 4.x preinstalled, including the classic C# compiler at a location like…