Without DISABLING a ListView, how do I PREVENT a new Item from being SELECTED???

I have a ListView in one of my VB.Net applications. I don't want to
Disable this ListView... but there are times I want to prevent the
User from selecting a ListView Item other than the one that is already
selected.

Other than disabling a ListView, how else can I prevent the User from
selecting a different item in the ListView.

Thanks in advance for your feedback.