Hi Geoffrey,
We have analyzed your requirement. We can disable the SfNavigationItem by setting the IsEnabled property to false. However, since we are using Items as an ObservableCollection<object>, we will need to use ItemsStyle. All SfNavigationItems are disabled if the IsEnable property of the ItemContainerStyle is set to false. As a result, using Items as an ObservableCollectionobject> does not meet your requirements. Only when we use SfNavigationItem directly in Xaml instead of Items as ObservableCollectionobject> can we achieve this.
Please let us know if you have any other concerns.
Regards,
Suganya Sethuraman.