Web Site Support Attributes
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
Visual Studio Web site project can be extended to provide support for Web programming languages. The language must register itself with Visual Studio so that project templates can appear in the New Web Site dialog box when the language is selected.
The IronPython Studio sample includes web site support. The sample contains the following attribute classes to register IronPython as a codebehind language for new Web projects.
WebSiteProjectAttribute
This attribute is placed on the language project. It adds the language to the list of Web programming languages in the Language list in the New Web Site dialog box. For example, the following code adds IronPython to the list:
[WebSiteProject("IronPython", "Iron Python")]
public class PythonProjectPackage : ProjectPackage
This attribute also sets the templates path to point to the templates folder. For more information on the location of the templates folder, see Web Site Support Templates.
WebSiteProjectRelatedFilesAttribute
This attribute is placed on the language project. It allows the Web Site project to nest one file type (related) under another file type (primary) in the Solution Explorer.
For example, the following code specifies that an IronPython codebehind file is related to an .aspx file. When a new .aspx Web page is created in an IronPython Web site solution, a new .py source file is generated and appears as a child node of the .aspx page.
[WebSiteProjectRelatedFiles("aspx", "py")]
public class PythonProjectPackage : ProjectPackage
ProvideIntellisenseProviderAttribute
This attribute is placed on the language project package. It selects the IntelliSense provider for the language.
For example, the following code specifies that an instance of PythonIntellisenseProvider, which implements IVsIntellisenseProject, should be created on demand to provide language services.
[ProvideIntellisenseProvider(typeof(PythonIntellisenseProvider), "IronPythonCodeProvider", "Iron Python", ".py", "IronPython;Python", "IronPython")]
public class PythonPackage : Package, IOleComponent
The IVsIntellisenseProject implementation handles references and calls the language compiler when a Web page with code is requested but isn't cached.