Have a look at
http://www.cpearson.com/excel/Creati...nctionLib.aspx

That page explains how to do it and includes a complete VS2008
solution for example code.

Cordially,
Chip Pearson
Microsoft Most Valuable Professional
Excel Product Group, 1998 - 2009
Pearson Software Consulting, LLC
www.cpearson.com
(email on web site)


On Sat, 15 Aug 2009 15:49:01 -0700, Troy
wrote:

Is there a good example of creating a User Defined Function(s) with VB.Net?
I've tried creating a class library and building a .dll, but I could not
register it with
excel. Any help would be appreciated.