Read design table or custom properties without opening the file in Solidworks

I assume this isn't possible, but thought I would check. I have a folder setup with some parts with design tables. I am creating a macro to pick a specific config of each part from a property manager page and then insert it into the drawing. I will have a drop down list for each part in the folder. I want to then have another drop down list be populated from choices I obtain from the desingtable/custom properties of the part picked in the first drop down list.

Any help would be appreciated.

SolidworksApi macros