I have a listbox control set in selection mode = Multiple, I select some values from list but when I want insert or update into the database just save a one value (just one value, no more values). I want to save the values selected.

th

What is the code you are using to get the selected value?

--Stole this from a moderator

I will only tell you how to do it, not do it for you.
Unless, of course, you want to hire me to do work for you.