title: Angular 2 - Pass data from one controller to another
body: <p>I would like to pass data from the <code>parent</code> controller to the <code>child</code> controller, when the user <code>click</code> on an element existing the <code>parent</code>.</p>
  
  <p>Eg.</p>
  
  <pre><code>&lt;div (click)="PassDataToChild(orderNo)"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>.ts</p>
  
  <pre><code>PassDataToChild(orderNo){
  //Got the orderNo
  //How to send it to the child component, and let the child read it?
  }
  </code></pre>