Every now and then, a request comes through the forums or ng's about how to code an application so that only one instance of a form class can be created. There are variations on the theme, but it all comes down to what we call a singleton design. Here...

I fielded a question from an eager VSTO developer in the forums. It was about the UDF-managed code support we added in VSTO- a screaming feature. Basically, you can create User-defined functions in manage code and then make them available from your VBA...

One of the recent questions on our forums was about invoking a smart tag action in a VSTO 2005 project. Invoke action for all Smart Tags in Word document First, let me repeat: Our smart tag tools in VSTO are reason enough to own the tools. I...