title: Add event for PictureBox mouse down
body: <p>I want to make this event to work:</p>
  
  <pre><code>private void pictureBox1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
  {
      //code
  }
  </code></pre>
  
  <p>I know I have to add an event for this to work but I wasn't able to find the syntax anywhere. How can I add this event?</p>