ASP.NET 4 Unleashed

Registering a VirtualPathProvider Class

Before you can use an instance of the VirtualPathProvider class, you must register it for your application. You can register a VirtualPathProvider instance with the HostingEnvironment.RegisterVirtualPathProvider() method.

You need to register the VirtualPathProvider when an application first initializes. You can do this by creating a shared method named AppInitialize() and adding the method to any class contained in the App_Code folder. The AppInitialize() method is automatically called by the ASP.NET Framework when an application starts.

For example, the following AppInitialize method registers a VirtualPathProvider named MyVirtualPathProvider: