title: How do I fill everything over a straight line and under a curve?
body: <p>I am using the Charts component in Windows Forms.</p>
  
  <p>I create a <code>straight line</code> using</p>
  
  <pre><code>chart1.Series["Grenzwert"].Points.Add(new DataPoint(0, y));
  chart1.Series["Grenzwert"].Points.Add(new DataPoint(maxwidth, y));
  </code></pre>
  
  <p>Also I plot a a series of points connected by a line, let's call it <code>curve</code>.</p>
  
  <p>How do I show everything over <code>straight line</code> and under <code>curve</code> filled?</p>
  
  <p>Column fills the whole area, not just above <code>straight line</code>.</p>
  
  <p>Example:</p>
  
  <p><img src="https://i.stack.imgur.com/iKqfS.gif" alt="enter image description here"></p>