title: upload file with angular 5 and material
body: <p>I'm working with Angular 5 and <a href="https://material.angular.io/" rel="nofollow noreferrer">material library</a>. I need to upload a file, but in the documentation, I didn't find an explanation to accomplish this task.</p>
  
  <p>Is anybody that have the same need that can suggest me a good tutorial or documentation?</p>
  
  <p>Tnx</p>