This worked for me
this.toolbarOptions = [{text: 'Add User', prefixIcon: 'e-btn-icon e-add e-icons e-icon-left'}, 'Search'];
toolbarClick(args: ClickEventArgs): void {
if (args.item.text === 'Add User') {
this.router.navigate(['profile'], { relativeTo: this.activatedRoute});
}
args.cancel = true;
}