public PdfPage() { InitializeComponent(); if (DataContext == null) { DataContext = new ViewModels.PdfViewModel(); } ScrollViewer.Visibility = Visibility.Visible; ViewModel = DataContext as ViewModels.PdfViewModel; ScrollViewer.Visibility = Visibility.Collapsed; SizeChanged += PdfPage_SizeChanged; ViewModel.PdfLoadedEvent += _viewmodel_PdfLoadedEvent; ViewModel.LoadDefaultFile(); }