Interprocess Communication between Excel & C# Application?

Question

I was wondering if there was a way to set up communication between an instance of excel and a C# Application. For instance, when a cell value changes, I would like to send the u

Answer 1

You need the Office Primary Interop Assemblies, which are a .Net wrapper for the COM API exposed by MS Office. You can consume events through these, so you might be able to set up a listener that will capture the event that you want.