how to add a query in onclick event to a command button

hI,
I am new in Ms-access And I have some doubts.


I want to add some query in the onclick event of a
buton in ms-access DAP.

Like for example,I have some options to select
different countries and when the user clicks the
command button to get the result,I need to execute the
query to get the records and open the resuling records in
a DAP based on the query. Also how can I trace which
option is selected by user when the user clicks the button

Can somone help me out with the piece of code to be
written.


Thanks for the help(in advance).


shreeja