how to auto increment a number each time i open the worksheet
 

i made a invoice and i want to have the number of invoice increment automatic
invoicenumber + 1

can someone help me

take a look at

http://www.mcgimpsey.com/excel/sequentialnums.html


In article ,
"fred rondak" <fred wrote:

i made a invoice and i want to have the number of invoice increment automatic
invoicenumber + 1

can someone help me