title: how to know when a work in a thread is complete?
body: <p>I need to create multiple threads when a button is clicked and i've done that with this:</p>
  
  <pre><code>Dim myThread As New Threading.Thread(AddressOf getFile)
  myThread.IsBackground = True
  myThread.Start()
  </code></pre>
  
  <p>but i need to update a picture box with the downloaded file, buy if i set an event in the function getFile and raise it to notify that the files was downloaded and then update the picturebox.</p>