Pie Chart

Listen to the SelectedItemsChanged event on the PieSeries. In the event handler, get the PieSeries that raised the event and look in the SelectedItems collection property to see which object is selected.

What I want to know is how to code in detail?

Hello

You can listen to the event in xaml in the usual way like this:

<ms:PieChart Margin="20" Title="Pie Chart" RadiusFactor="1">
  <ms:PieSeries ItemsSource="{Binding Data1}" SelectedItemsChanged="PieSeries_OnSelectedItemsChanged" />
</ms:PieChart>

Then in the event handler, cast the sender into a PieSeries. Check that it has at least 1 selected value, then get that value from the SelectedItems collection of the PieSeries and cast it into the appropriate data type. In this example, the data type I've used is StringDouble.

private void PieSeries_OnSelectedItemsChanged(object sender, EventArgs e)
{
  PieSeries series = sender as PieSeries;
  if (series.SelectedItems.Count > 0)
  {
    StringDouble sd = series.SelectedItems[0] as StringDouble;
    // Based on data do something here.
  }
}

Once you have the StringDouble (or whatever data objects you are using), look at the data and do something based on the values. In you're example, if you were using StringDouble, you could check if the String value is "Monkey", if so, display the list of monkeys in the ListView. If the String value is "Zebra" then do whatever. Alternatively, rather than using StringDouble, you could create a custom data type that includes the list of monkeys etc inside it. This is all up to how you want to model your application. If you do use a custom data type, make sure to set the DataBinding property of the PieSeries to tell it which property to get the numeric values from.

Let me know if you have further questions.

Jason Fauchelle