This code demonstrates how XML data can be processed by the vMix API, how UI elements can be updated and how function codes can be sent. It serves as a template for handling API feedback. It also has an example of how API function codes can be sent to vMix. It also shows how to save this data in an Excel file.
The code is documented as well as possible. The project can be downloaded as a zipped program (with setup) or as a Visual Studio project, with source code.

Download Programm and Source Code here