You can use toggle button.
<ToggleButton x:Name="btnChangeChapter" Content="Change Chapter" Click="btnChangeChapter_Click_1"/>
private void btnChangeChapter_Click_1(object sender, RoutedEventArgs e)
{
/* TODO: use property btnChangeChapter.IsChecked.Value in SelectionChanged event,
it's bool value */
}
If you want to use ToggleButton
as app bar button style then check this out.