title: Angular 2 Trigger Form Validation on Submit
body: <p>I created a form with angular 2 and added some custome validators. Now i want to trigger the form validation if the user clicks on the submit button. In the examples i have found so far the submit button is disabled as long as the form is invalid but i want to have the submit button always enable and when the user clicks on submit the form should be validated. Does anybody know how i can make this work and which typescript method i should use? I have found the updateValueAndValidity method but it doesn´t seem to work with this method.</p>