Adding text to a pdf by automation AxAcroPDF

It would seem there should be a way to write text on a document in Microsoft Visual Studio using the AxAcroPDF viewer. Whether by Spreadsheet or Database, hundreds of documents can be collated from our customers, but additional information needs to be printed on the document such as purchase order number, routing codes, due dates, etc. before printing. The prints are grouped internally by the program for the appropriate stations. I have looked at all the dot properties, however; I get a message stating many of the properties do not function in AxAcroPDF.

Opening each document, and adding text one at a time takes more time than is allowed to do the jobs! There is nothing helpful to real world users, because you can automate using the original CAD formats, or Office Document formats, but you (I) cannot seem to be able to do that with the readers. Am I missing a simple way to accomplish this task?