Grid.MVC custom filter widget not showing clear filter button

Dec 10, 2015 at 3:23 PM
I have created a custom filter with unique values and tried returning the true value to below method to show clear filter button
    this.showClearFilterButton = function () {
        return true;
    };
event after returning true clear filter button is not showing on custom filter widget.

What I need to do here to show the clear filter button.