title: Silverlight Charting LineSeries - Add caption to the datapoint
body: <pre><code> &lt;toolkit:Chart Title="Sales" Name="ChartSales"&gt;
                       &lt;toolkit:Chart.Series&gt;
                  &lt;toolkit:LineSeries
                              Title="Serie1" Name="LineSerie1"
                              IndependentValueBinding="{Binding Key}"
                              DependentValueBinding="{Binding Value}" /&gt;
                  &lt;toolkit:LineSeries
                              Title="Serie3" Name="LineSerie3"
                              IndependentValueBinding="{Binding Key}"
                              DependentValueBinding="{Binding Value}" /&gt;
  </code></pre>
  
  <p>I have created a chart with 10 lineseries, all working nicely. However there are so much data on this chart that I need the caption that show up when pointing over the datapoint to be more explicit than 1243. I need to see the date and the title of the LineSerie</p>
  
  <p>How do I proceed?</p>