I like extending Visio with custom code, and I have been doing it a long time. I progressed from VBA within Visio documents, to VB executable, using a C++ wrapper to register as Visio Add-ons, through VB.net COM add-ins to C# VSTO add-ins. Which ever language and method I use, it seems to me that deployment is always far more more difficult than it should be. Even though it has got simpler with VS 2010, there are still some gotchas…
Read the rest of this entry »