title: Start timer from another form
body: <p>In my project I have two forms <code>mainForm</code> and <code>testingForm</code>.
  In <code>mainForm</code> i have <code>button1</code>, and in <code>testingForm</code>, I have:</p>
  
  <pre><code>Stopwatch measure = new Stopwatch();
  </code></pre>
  
  <p>When the user clicks <code>button1</code>, i want the <code>measure</code> stopwatch to start, and to make other events with it. How can I do that? I researched a lot, but nothing helped...</p>