WPF Listbox remove selection by clicking on blank space

Question

I have a wpf listbox with a custom item template which contains a rectangle. The each item in the listbox can be selected (only one at a time). I w

Answer 1

For The each item in the listbox can be selected (only one at a time).

You can come up with one of followings

1- Disable the item after it is selected.

2- Maintain a list at backend to mark each index selectable or unselectable.