Trying to show a pie chart, but a bar chart displays ?

[scott]

Sorry for the noob question, but why don't I see a pie chart ?

<UserControl x:Class="radPie.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">
    <Grid x:Name="LayoutRoot" Background="White">
        <telerik:RadChart Name="myPie"/>
        <Button Content="Next" Click="ShowChart" Width="50" Height="25" HorizontalAlignment="Left" VerticalAlignment="Top"/>
    </Grid>
</UserControl>

using System;
using System.Collections.Generic;
using System.Windows.Controls;

using Telerik.Windows.Controls.Charting;

namespace radPie
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            myPie.DefaultView.ChartTitle.Content = "My Pie";
            myPie.DefaultSeriesDefinition = new PieSeriesDefinition();
            ShowChart(null,null);
        }

        public void ShowChart(object sender, System.Windows.RoutedEventArgs e)
        {
            Random random = new Random();
            List<string> fruits = new List<string>() { "Apples", "Oranges", "Pears", "Peaches", "Bananas", "Grapes" };
            myPie.DefaultView.ChartArea.DataSeries.Clear();
            foreach (string s in fruits)
            {
                DataSeries series = new DataSeries() { LegendLabel = s };
                series.Add(new DataPoint(random.Next(0, 50)));
                myPie.DefaultView.ChartArea.DataSeries.Add(series);
            }
        }
    }
}

[scott]

Nevermind - I see that I created 6 series ... I changed it to create one series with six data points ...

public void ShowChart(object sender, System.Windows.RoutedEventArgs e)
   {
       Random random = new Random();
       List<string> fruits = new List<string>() { "Apples", "Oranges", "Pears", "Peaches", "Bananas", "Grapes" };
       myPie.DefaultView.ChartArea.DataSeries.Clear();
       DataSeries series = new DataSeries() { Definition = myPie.DefaultSeriesDefinition };
       foreach (string s in fruits)
       {
           DataPoint dp = new DataPoint(random.Next(0, 50)) { LegendLabel = s };
           series.Add(dp);
       }
       myPie.DefaultView.ChartArea.DataSeries.Add(series);
   }

Seems to work.  I'd delete the thread if I could...Anyway, am I using this correctly ?

Thanks ;)

[Giuseppe]

Hello scott,

Besides manual creation of DataSeries, you might consider the built-in databinding support as well -- you can find a number of topics that discuss how to populate the control with data here.

Hope this helps.


Best wishes,
Freddie
the Telerik team