Get the filtered Items after Filtering in the rad combo box.

Question

I have a rad combox with 10 items also.it conatin a property called filter='contains'.

so if i enter any key it'll filters the items and gives the matched items.

so here my question is i entered a i got 2 items.now i want to know the items that i got by filter from client side after entered the key.please hellp me guyss...I was Strucken with this solution thak you in adavance...