ng-paste not working in angular2

I'm trying to prevent pasting into a textbox using ng-paste in angular2 by cancelling the paste event. I got this to work in angularJS but not in angular2. Am I doing something wrong or does it not work in angular2? ``` <input type="text" #username class="form-control" id="username" required placeholder="Username" value="{{userName}}" ng-paste="$event.preventDefault()"> ```