Execute Document Viewer Commands

• Nov 10, 2021

All Document Viewer commands implement the ICommand interface. To execute a command, call the command’s Execute method.

The following code invokes the Open dialog when the Document Viewer is loaded:

C#

private void DocumentViewer_Loaded(object sender, RoutedEventArgs e) {
    documentViewer.Commands.ShowOpenDialogCommand.Execute(null);
}

VB.NET

Private Sub DocumentViewer_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
    documentViewer.Commands.ShowOpenDialogCommand.Execute(Nothing)
End Sub

A command’s CanExecute method returns if the command can be executed.

See the following documentation topic for information on how to customize the Document Viewer toolbar: Create a Custom Document Viewer Toolbar