title: .net chart clear and re-add
body: <p>I have a chart and I need to clear it in order to populate it with different values.
  The chart has 3 series, all defined in the .aspx page. </p>
  
  <p>The problem is when I call</p>
  
  <pre><code>chart.Series.Clear();
  </code></pre>
  
  <p>and then re-add the series like:</p>
  
  <pre><code>chart.Series.Add("SeriesName");
  </code></pre>
  
  <p>It doesn't keep any of the attributes of the 3 initial series.
  How to just clear the values and keep the series attributes?</p>