[kosolam]

Don’t feel too bad because if you would have created a product from it, today this product would be deprecated..

[fzumstein]

I don't think that's necessarily true. They built VSTO for C#, but everybody was using ExcelDNA instead, an Open Source solution that was much better!

[kosolam]

By chance I built quite an interesting addin for excel using VSTO. It was great, nothing to complain about. In the corporate world Microsoft tech is widely common.