How to manage Infopath VSTA code

Situation

We are currently developing a Sharepoint 2010 site that uses Infopath 2010 forms. However most of these forms require more advanced functionality thus these became Adminstrator-approved forms and have c# code on them (VSTA).

Question

Since each infopath form would have its own c# project, we are now having difficulties managing the code as more infopath forms are needed. Is there a better way to manage the code? Or is there a mechanism to have all 开发者_运维知识库of the VSTA code in one central location/solution?

Here's a link to the InfoPath blog on how to manage InfoPath source code: http://blogs.msdn.com/b/infopath/archive/2010/06/10/using-tfs-for-source-control-in-infopath-2010.aspx