protected override void OnNavigatedTo(NavigationEventArgs e) { base.OnNavigatedTo(e); fileName = (string)e.Parameter; Assembly assembly = typeof(FormViewer).GetTypeInfo().Assembly; Stream stream = assembly.GetManifestResourceStream($"WoundManagementSystem.Assets.Forms.{fileName}"); byte[] buffer = new byte[stream.Length]; stream.Read(buffer, 0, buffer.Length); //Loads the PDF document. PdfLoadedDocument loadedDocument = new PdfLoadedDocument(buffer); PDFViewer.LoadDocument(loadedDocument); }