title: Key Down not working in listView
body: <p>It is my second day doing c#...don't judge please. I have read other threads but they did not help.</p>
  
  <p>I have this code:</p>
  
  <pre><code>private void listView1_KeyDown(object sender, KeyEventArgs e)
  {
      if (e.KeyCode == Keys.Delete)
      {
          MessageBox.Show("aa");
      }
  }
  </code></pre>
  
  <p>which is not working. </p>
  
  <p>What am I doing wrong?</p>