title: How to convert input value to uppercase in angular 2 (value passing to ngControl)
body: <p>I am trying to validate the input fields using ngControl's value in angular 2.
  i need to validate that the user enters the value in upper case always. </p>
  
  <p>Now we need to convert the value entered by user to uppercase. But i am handling values from input fields using ngControl, not ngModel ( considering i could have used ngModelChange event to update value to uppercase.)</p>
  
  <p>So what is the best and low cost way to convert the value used by ngControl. </p>