How do I get a collection of User Properties (Shape Data) from a Master Shape

[Scott Morrison]

I am writing a flexible Shape Data to Excel Export tool.
The OOTB exporter only works on a single File where I need to be able collect a list of files from a variety of folders.

I want to be able to acquire a list (Collection) of properties
(example: Porp.Process_ID, Prop.Brief_Description, Prop.Deliverables, etc.)
that I could present in a listbox for selection/application to the Excel output.

I can get a list of Master Shapes but NOT a list of properties per master.
Thanks in advance.
Scott