Looking for a library to create outlook add-in's for outlook 2010, 2007 and outlook 2003
Found this http://www.add-in-express.com/add-in-net/video.php which looks very good but also pricey since it's a general purpose library for creating addins for other office products as well
Is there any other library for comparison and hopefully cheaper too ! google search is inadequate with a rather generic name such as outlook add-in library/tool which return results for existing add-ins etc.
thanks
You are looking for NetOffice. It is a (free) set of version-independent interop assemblies for making Office add-ins targeting different versions.
NetOffice also has some additional assistance for managing the COM references, Intellisense help on each method to show which versions of the Office application support that method, and then some additional tools to manage your multi-version add-in projects.
The library I've found most helpful for interacting with Outlook's mail items and such is Redemption.
I have made a search and found some interesting starting point.
Creating an Outlook 2010 Add-In
Outlook 2007 Add-in Using Microsoft Visual C#.NET
However is not an easy task to be compatible with various version of Outlook
来源：https://stackoverflow.com/questions/9569948/creating-version-independent-outlook-add-ins