System.Web.WebPages.WebPageBase.CreatePageFromVirtualPath C# (CSharp) Method

        protected virtual WebPageBase CreatePageFromVirtualPath(string virtualPath, HttpContextBase httpContext, Func<string, bool> virtualPathExists, DisplayModeProvider displayModeProvider, IDisplayMode displayMode)
        {
            try
            {
                DisplayInfo resolvedDisplayInfo = displayModeProvider.GetDisplayInfoForVirtualPath(virtualPath, httpContext, virtualPathExists, displayMode);

                if (resolvedDisplayInfo != null)
                {
                    var webPage = VirtualPathFactory.CreateInstance<WebPageBase>(resolvedDisplayInfo.FilePath);

                    if (webPage != null)
                    {
                        // Give it its virtual path
                        webPage.VirtualPath = virtualPath;
                        webPage.VirtualPathFactory = VirtualPathFactory;
                        webPage.DisplayModeProvider = DisplayModeProvider;

                        return webPage;
                    }
                }
            }
            catch (HttpException e)
            {
                // If the path uses an unregistered extension, such as Foo.txt,
                // then an error regarding build providers will be thrown.
                // Check if this is the case and throw a simpler error.
                BuildManagerExceptionUtil.ThrowIfUnsupportedExtension(virtualPath, e);

                // If the path uses an extension registered with codedom, such as Foo.js,
                // then an unfriendly compilation error might get thrown by the underlying compiler.
                // Check if this is the case and throw a simpler error.
                BuildManagerExceptionUtil.ThrowIfCodeDomDefinedExtension(virtualPath, e);

                // Rethrow any errors
                throw;
            }
            // The page is missing, could not be compiled or is of an invalid type.
            throw new HttpException(String.Format(CultureInfo.CurrentCulture, WebPageResources.WebPage_InvalidPageType, virtualPath));
        }