title: Angular How to catch mat-tab changed event
body: <p>Here I need to send tab.staffMemberId to a service and get values and fill matInput values. I need to send  tab.staffMemberId to service when tab is changing</p>
  
  <pre><code>&lt;mat-tab-group&gt;
  &lt;mat-tab *ngFor="let tab of StaffMemberList; let index = index" [label]="tab.staffMemberId"&gt;
  {{tab.id}}
  &lt;mat-grid-list cols="3" rowHeight="8:1"&gt;
      &lt;mat-grid-tile&gt;
        &lt;mat-form-field class="full-width"&gt;
          &lt;input matInput placeholder="Position" &gt;
        &lt;/mat-form-field&gt;
      &lt;/mat-grid-tile&gt;
  &lt;/mat-grid-list&gt;
  </code></pre>
  
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