Hi Wu,

Try this =IF(OR(A2="",B2=""),"",A2*B2)
--
Regards
Warren
Excel Novice

If this helps please click the Yes button.


"Wu" wrote:

There are three column contain "Quantity" (A1), "Unit price" (B1) and
"Amount" (C1)

I have set a formula at "Amount" (C2)that =A2*B2, it is work , but if
anyone
of A2 or B2 is no data, or both of them are no data, C2 will show
#value!

How can it does not show #value! even there are no data at A2 and B2.