I have developed a lot of class library projects in VS 2012 to be used in Windows Forms and Web forms applications.
The question is simple. Do I need to deploy the D
The XML file contains the doc comments for the public types & members in the assembly.
You only need it if you want Visual Studio to show documentation in IntelliSense.
If you're deploying a consumer-facing app (as opposed to a developer-facing reusable library), you do not need it.