title: How to close Firefox's current tab?
body: <p>I'm trying closing a current tab in firefox using C#. </p>
  
  <p>I use  <code>System.Windows.Forms.SendKeys("^W")</code> to firefox and it closes all tab.</p>
  
  <p>However, I can send <Kbd>Ctrl</Kbd> + <Kbd>Tab</Kbd> to firefox by <code>System.Windows.Forms.SendKeys("^{TAB}")</code> and the current tab is changed. </p>