title: How to remove the event handler after it had fired?
body: <p>How to remove the event handler after the event handler had fired so that it can execute only once?</p>
  
  <pre><code>c.Click +=  (o,e)=&gt;{
     Console.WriteLine("Clicked!");
     /*I want to remove this event handler now so that it doesn't fire anymore*/
  }
  </code></pre>