To turn your Class Library project into an Excel add-in, just open Tools -> Library Package Manager -> Package Manager Console, and enter
PM> Install-Package Excel-DNA
The Excel-DNA package now has an install script that creates the required .dna file, and a post-build step to copy the .xll and run the packing tool, and even configures debugging. The package should work for C#, Visual Basic and F# Class Library projects on:
- Visual Studio 2010 Professional and higher
- Visual Studio 2012 Professional and higher
- Visual Studio 2012 Express for Windows Desktop
Please post any feedback – bugs, good or bad comments – to the Excel-DNA Google group.