Create a data series for each data set you want to display and add it to the Chart control’s Series collection:

CopyDisplaying multiple data sets on a chart
<ms:Chart>
  <ms:LineSeries ItemsSource="{Binding PredictedSales}" />
  <ms:LineSeries ItemsSource="{Binding ActualSales}" />
</ms:Chart>

To customize the color of each data set, use the SeriesBrush property:

CopyDisplaying multiple data sets with different brushes
<ms:Chart>
  <ms:LineSeries ItemsSource="{Binding PredictedSales}" SeriesBrush="Navy" />
  <ms:LineSeries ItemsSource="{Binding ActualSales}" SeriesBrush="Red" />
</ms:Chart>

Additional customization is possible through series-specific style properties. For example, to customize line widths in a line or area series, use LineStyle.

To display data series stacked on top of one another instead of overlaid or placed side by side, use a stacked series such as StackedAreaSeries.