



Visual Studio installs these assemblies automatically. These copies of the assemblies are used when you write code and build projects. These different sets of assemblies are in the following locations: Visual Studio uses different sets of the PIAs on the development computer. Use features of multiple Microsoft Office applications in a single projectįull list of primary interop assemblies for Microsoft Office applicationsįor more information about primary interop assemblies, see Primary interop assemblies. Separate primary interop assemblies to build and run projects This topic describes the following aspects of using the Microsoft Office PIAs in Office projects: In some scenarios, you might need to add references to additional PIAs (for example, if you want to use a feature of Microsoft Office Word in a project for Microsoft Office Excel). When you create a new Office project, Visual Studio adds references to the PIAs that are required to build the project. Office Add-ins have a small footprint compared to VSTO Add-ins and solutions, and you can build them by using almost any web programming technology, such as HTML5, JavaScript, CSS3, and XML. Interested in developing solutions that extend the Office experience across multiple platforms? Check out the new Office Add-ins model.
