title: Firing event when scroll bar reaches the bottom of panel
body: <p>I have a winform application where I want a event to be fired when the scrollbar reaches the bottom of panel.</p>
  
  <p>I tried this:</p>
  
  <pre><code>private void Panel1_Scroll(object sender, ScrollEventArgs e)
  {
  //some operation
  }
  </code></pre>
  
  <p>But it is firing event everytime I scroll the Scrollbar not when I reach the end.</p>
  
  <p>How to achieve this ?</p>