.NET Installation instructions
EiffelStudio supports .NETCore and only on Windows the .NET Framework (v4.0) . Before being able to compile an Eiffel .NET project, you need to install .NETCore or the .NET Framework.
- .NETCore: see https://learn.microsoft.com/en-us/dotnet/core/install/ (net6.0 or net7.0 are recommended)
- .NET Framework (Windows only): see https://learn.microsoft.com/en-us/dotnet/framework/install/ (you need to install either the .NET Framework, the .NET Framework SDK or Visual Studio .NET).
If you do not have any of those installed, any Eiffel .NET compilation will report an error because no .NET features support are installed.