H
I will better consider to import your csv data into a database to be more efficient and ease of use to retrieve data trough a simple TSQL statement.
That say you manage you data to be displayed and used/stored in the form itself depending of the type of fields you want to use.
for example may you want to use it in a drop down you need to return only two values from your csv query to be used as id and value. (the first listed I your query been the id) catalog will then know automatically how to use it
Hope this help
/J