Note, this is for .NET Framework! Nowadays you probably want to use dotnet new cli to make a dotnet core project.
If you've ever started a simple C# project in Visual Studio, it creates a lot of cruft in your project.
These are a minimal set of files that you can start writing a C# programs. I deleted most lines from a starter CSPROJ and SLN file to get this starter template.
These files open and build cleanly in:
- msbuild
- Visual Studio
- Visual Studio Code