Mapping Autodesk Revit parameters using an XML document for use with custom Add-in.

Walk through how a required change in our current Shared Parameter system made me look for a way to Map code behind parameters to an external file (XML) that could be reloaded on the fly. We will see a very simple example first of applying information to walls, and then we jump into Visual Studio to see how I loaded the information, get the mappings, and then how to reload on the fly.