Supported Programming Languages in Office Projects
The Office project templates in Visual Studio support only the Visual Basic and Visual C# programming languages. Therefore, these project templates are available only under the Visual Basic and Visual C# nodes of the New Project dialog box in Visual Studio. For more information, see How to: Create Office Projects in Visual Studio.
Applies to: The information in this topic applies to document-level projects and application-level projects for Microsoft Office 2010 and the 2007 Microsoft Office system. For more information, see Features Available by Office Application and Project Type.
Microsoft Office and Visual Basic for Applications (VBA) were developed to work together to optimize the workflow of application customization. Visual Basic has inherited some of those developments. For example, Visual Basic supports optional parameters, which means that you can write less code when calling some methods in the Microsoft Office primary interop assemblies than when you use Visual C#. For more information, see Programming with Visual Basic vs. Visual C# in Office Solutions.