Edit: I want to add, to make sense to the question, that I will show the selecction in a different component list, so I don't need to show them twice. Also they can open the multiselect popup to unselect, cause I will put checkboxes on the popup elements to show they are selected.
answered on 22 Apr 2021, 01:51 PM
If you cancel the ValueChanged event (i.e., you do not update the view-model in it), the user will see no selection. Selection will then not show up in the dropdown either.
Another approach would be to use CSS to hide the DOM elements of the multiselect from the rendering selection would still happen, selected items in the dropdown will still show up, but CSS can hide the chips in the input itself.