Yes, C# 3.0 is backward-compatible, so older C# programs will still work, but using LINQ and the other new features can make a big difference in your new code. It's worth learning the new material.

Microsoft announced the preview release of C# Dev Kit, a new extension for Visual Studio Code intended to improve the C# development experience on Linux, macOS, Windows and more.

C# Dev Kit, a Visual Studio Code extension for “editor first” C# development, has reached general availability, Microsoft announced on October 4. The extension leverages C# language services ...