Background In one of my previous posts, I demonstrated how to create a simple VSTO Addin for Excel that adds a button on the ribbon. In this post, I am going to show how to add a user defined functions using Excel-DNA as well as use the ribbon functionality. My Stack Visual Studio 2019 Community. .NET Framework 4.7.2 …

Background Microsoft Office provides a variety of component types you could develop to extend its existing functionality or to add more useful features. These components include VBA macros, VSTO components, XLL Addons, and more. In this sample, I will focus on creating a C# VSTO project that displays a simple ribbon. …