Hi,

I've two worksheets for current month and previous month. I'd like to
compare this two sheets and highlight the different. The key to compare
is Product No in column A.

I could do this using loop to check row by row in the previous month
sheet. And using vlookup to check if the Product No exist in current
month sheet. I wonder if there is more effective method to accomplished
this task. I think the looping row by row is quite slow. And in some
occasion, the Product No was blank that make my vlookup not working
properly (I think).

Your help are appreciated.


--
hideki
------------------------------------------------------------------------
hideki's Profile: http://www.excelforum.com/member.php...o&userid=18903
View this thread: http://www.excelforum.com/showthread...hreadid=468402

Have you tried the loop yet? Often things that I think will execute
slowly actually end up being quite fast.

----

Nick hebb
BreezeTree Software
http://www.breezetree.com

Thank you Nick for your respond. Yes I'd tried the loops thing, and jus
like what you said, it ran quite fast. At least, not annoying me at all
But I just wonder if my rows become bigger in number, can it still giv
the same result?

I'm a beginner in Excel programming and still learning what is th
right and good programming style. If there is no other effectiv
method, I'll stick to the row by row looping in my VBA programming

--
hidek
-----------------------------------------------------------------------
hideki's Profile: http://www.excelforum.com/member.php...fo&userid=1890
View this thread: http://www.excelforum.com/showthread.php?threadid=46840