Application.xaml.vb
Class Application ' Application-level events, such as Startup, Exit, and DispatcherUnhandledException ' can be handled in this file. End Class
MainWindow.xaml.vb
Class MainWindow Private Sub Window_Loaded(sender As Object, e As RoutedEventArgs) ' Load a sample document on startup pdfViewerControl1.InputFile = "sample.pdf" End Sub Private Sub menuItemOpen_Click(sender As Object, e As RoutedEventArgs) Dim dlg = New Microsoft.Win32.OpenFileDialog() dlg.Filter = "PDF Files (*.pdf)|*.pdf|All Files (*.*)|*.*" Dim result As Boolean? = dlg.ShowDialog() If result = True Then pdfViewerControl1.InputFile = dlg.FileName End If End Sub End Class