Hello dear ALL

I am working with a form in vb.net which have the follwing attribute i.e BOOK TITLE(text box) , CATEGORY NAME(combo box) ,YEAR PUBLISHED(t.box) and SAVE button .the CATEGORY combo pickup data from CATEGORY TABLE on cat_name . on back end (SQL SERVER) there are two tbl i.e

CATEGORY(cat_id,cat_name) and BOOKRECORD(book_name,cat_id,pub_year)
Now when i press the SAVE button the record save in BOOKRECORD table with cat_id instead of selected category NAME.
HOW can i accomplish this task plz HELP ME.
THANK TO YOU ALL .

cmb.displaymember="cat-name"
cmb.valuemember="cat_id"