FlexChart | ComponentOne
Sunburst Chart / Quick Start
In This Topic
    Quick Start
    In This Topic

    This quick start is intended to guide you through a step-by-step process of creating a simple Sunburst application and running the same in Visual Studio.

    The following image displays how a basic Sunburst chart appears after completing the steps mentioned above.

    To quickly get started with Sunburst chart and observe how it appears on running the application, follow these steps:

    Add Sunburst Chart to the Application

    1. Create a WPF Application (.NET Framework/.NET Core) for .NET Framework version and .NET versions in Visual Studio.
    2. Drag and drop the C1Sunburst control to the MainWindow.
      The following dlls or Nuget Packages are automatically added to the application:
      C1.WPF.4.6.2 or C1.WPF.Core for .NET version
      C1.WPF.DX.4.6.2 or C1.WPF.DX for .NET version
      C1.WPF.FlexChart.4.6.2 or C1.WPF.Chart for .NET version.

      The XAML markup resembles the following code in the <Grid></Grid> tags.
    3. <c1:C1Sunburst x:Name="flexPie" 
               Binding="Value" 
               BindingName="Name" 
               HorizontalAlignment="Left" 
               Height="300" 
               VerticalAlignment="Top" 
               Width="300">
    <c1:C1Sunburst.ItemsSource>
        <c1:FlexPieSliceCollection>
            <c1:FlexPieSlice Name="Slice1" Value="1"/>
            <c1:FlexPieSlice Name="Slice2" Value="2"/>
            <c1:FlexPieSlice Name="Slice3" Value="3"/>
            <c1:FlexPieSlice Name="Slice4" Value="4"/>
        </c1:FlexPieSliceCollection>
    </c1:C1Sunburst.ItemsSource>
</c1:C1Sunburst>

    Bind Sunburst Chart to a Data Source

    In this step, first create a class DataService that generates random sales data for four quarters, namely Q1, Q2, Q3, and Q4 in 2013, 2014, and 2015. Next, bind Sunburst to the created class using the ItemsSource property provided by the FlexChartBase class. Then, specify numeric values and labels for the Sunburst slices using the Binding and the BindingName property, respectively of the FlexChartBase and the C1FlexPie class.

    1. Add a class, DataService and add the following code.
      Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.Threading.Tasks

Public Class DataService
    Private rnd As New Random()
    Shared _default As DataService

    Public Shared ReadOnly Property Instance() As DataService
        Get
            If _default Is Nothing Then
                _default = New DataService()
            End If

            Return _default
        End Get
    End Property

    Public Shared Function CreateHierarchicalData() As List(Of DataItem)
        Dim rnd As Random = Instance.rnd

        Dim years As New List(Of String)()
        Dim times As New List(Of List(Of String))() From {
            New List(Of String)() From {
                "Jan",
                "Feb",
                "Mar"
            },
            New List(Of String)() From {
                "Apr",
                "May",
                "June"
            },
            New List(Of String)() From {
                "Jul",
                "Aug",
                "Sep"
            },
            New List(Of String)() From {
                "Oct",
                "Nov",
                "Dec"
            }
        }

        Dim items As New List(Of DataItem)()
        Dim yearLen = Math.Max(CInt(Math.Round(Math.Abs(5 - Instance.rnd.NextDouble() * 10))), 3)
        Dim currentYear As Integer = DateTime.Now.Year
        For i As Integer = yearLen To 1 Step -1
            years.Add((currentYear - i).ToString())
        Next
        Dim quarterAdded = False

        years.ForEach(
            Function(y)
                Dim i = years.IndexOf(y)
                Dim addQuarter = Instance.rnd.NextDouble() > 0.5
                If Not quarterAdded AndAlso i = years.Count - 1 Then
                    addQuarter = True
                End If
                Dim year = New DataItem() With {
                              .Year = y
                          }
                If addQuarter Then
                    quarterAdded = True
                    times.ForEach(Function(q)
                                      Dim addMonth = Instance.rnd.NextDouble() > 0.5
                                      Dim idx As Integer = times.IndexOf(q)
                                      Dim quar As String = "Q" + (idx + 1).ToString()
                                      Dim quarters = New DataItem() With {
                                                    .Year = y,
                                                    .Quarter = quar
                                                }
                                      If addMonth Then
                                          q.ForEach(
                                          Function(m)
                                              quarters.Items.Add(New DataItem() With {
                                                                      .Year = y,
                                                                      .Quarter = quar,
                                                                      .Month = m,
                                                                      .Value = rnd.[Next](20, 30)
                                                                  })

                                          End Function)
                                      Else
                                          quarters.Value = rnd.[Next](80, 100)
                                      End If
                                      year.Items.Add(quarters)

                                  End Function)
                Else
                    year.Value = rnd.[Next](80, 100)
                End If
                items.Add(year)

            End Function)

        Return items
    End Function

    Public Shared Function CreateFlatData() As List(Of FlatDataItem)
        Dim rnd As Random = Instance.rnd
        Dim years As New List(Of String)()
        Dim times As New List(Of List(Of String))() From {
            New List(Of String)() From {
                "Jan",
                "Feb",
                "Mar"
            },
            New List(Of String)() From {
                "Apr",
                "May",
                "June"
            },
            New List(Of String)() From {
                "Jul",
                "Aug",
                "Sep"
            },
            New List(Of String)() From {
                "Oct",
                "Nov",
                "Dec"
            }
        }

        Dim items As New List(Of FlatDataItem)()
        Dim yearLen = Math.Max(CInt(Math.Round(Math.Abs(5 - rnd.NextDouble() * 10))), 3)
        Dim currentYear As Integer = DateTime.Now.Year
        For i As Integer = yearLen To 1 Step -1
            years.Add((currentYear - i).ToString())
        Next
        Dim quarterAdded = False
        years.ForEach(
            Function(y)
                Dim i = years.IndexOf(y)
                Dim addQuarter = rnd.NextDouble() > 0.5
                If Not quarterAdded AndAlso i = years.Count - 1 Then
                    addQuarter = True
                End If
                If addQuarter Then
                    quarterAdded = True
                    times.ForEach(Function(q)
                                      Dim addMonth = rnd.NextDouble() > 0.5
                                      Dim idx As Integer = times.IndexOf(q)
                                      Dim quar As String = "Q" + (idx + 1).ToString()
                                      If addMonth Then
                                          q.ForEach(Function(m)
                                                        items.Add(New FlatDataItem() With {
                                                                      .Year = y,
                                                                      .Quarter = quar,
                                                                      .Month = m,
                                                                      .Value = rnd.[Next](30, 40)
                                                                  })

                                                    End Function)
                                      Else
                                          items.Add(New FlatDataItem() With {
                                                        .Year = y,
                                                        .Quarter = quar,
                                                        .Value = rnd.[Next](80, 100)
                                                    })
                                      End If

                                  End Function)
                Else
                    items.Add(New FlatDataItem() With {
                                  .Year = y.ToString(),
                                  .Value = rnd.[Next](80, 100)
                              })
                End If

            End Function)

        Return items
    End Function
End Class

      using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


namespace SunburstQuickStart
{
    public class DataService
    {
        Random rnd = new Random();
        static DataService _default;

        public static DataService Instance
        {
            get
            {
                if (_default == null)
                {
                    _default = new DataService();
                }

                return _default;
            }
        }

        public static List<DataItem> CreateHierarchicalData()
        {
            Random rnd = Instance.rnd;

            List<string> years = new List<string>();
            List<List<string>> times = new List<List<string>>()
            {
                new List<string>() { "Jan", "Feb", "Mar"},
                new List<string>() { "Apr", "May", "June"},
                new List<string>() { "Jul", "Aug", "Sep"},
                new List<string>() { "Oct", "Nov", "Dec" }
            };

            List<DataItem> items = new List<DataItem>();
            var yearLen = Math.Max((int)Math.Round(Math.Abs(5 - Instance.rnd.NextDouble() * 10)), 3);
            int currentYear = DateTime.Now.Year;
            for (int i = yearLen; i > 0; i--)
            {
                years.Add((currentYear - i).ToString());
            }
            var quarterAdded = false;

            years.ForEach(y =>
            {
                var i = years.IndexOf(y);
                var addQuarter = Instance.rnd.NextDouble() > 0.5;
                if (!quarterAdded && i == years.Count - 1)
                {
                    addQuarter = true;
                }
                var year = new DataItem() { Year = y };
                if (addQuarter)
                {
                    quarterAdded = true;
                    times.ForEach(q =>
                    {
                        var addMonth = Instance.rnd.NextDouble() > 0.5;
                        int idx = times.IndexOf(q);
                        var quar = "Q" + (idx + 1);
                        var quarters = new DataItem() { Year = y, Quarter = quar };
                        if (addMonth)
                        {
                            q.ForEach(m =>
                            {
                                quarters.Items.Add(new DataItem()
                                {
                                    Year = y,
                                    Quarter = quar,
                                    Month = m,
                                    Value = rnd.Next(20, 30)
                                });
                            });
                        }
                        else
                        {
                            quarters.Value = rnd.Next(80, 100);
                        }
                        year.Items.Add(quarters);
                    });
                }
                else
                {
                    year.Value = rnd.Next(80, 100);
                }
                items.Add(year);
            });

            return items;
        }

        public static List<FlatDataItem> CreateFlatData()
        {
            Random rnd = Instance.rnd;
            List<string> years = new List<string>();
            List<List<string>> times = new List<List<string>>()
            {
                new List<string>() { "Jan", "Feb", "Mar"},
                new List<string>() { "Apr", "May", "June"},
                new List<string>() { "Jul", "Aug", "Sep"},
                new List<string>() { "Oct", "Nov", "Dec" }
            };

            List<FlatDataItem> items = new List<FlatDataItem>();
            var yearLen = Math.Max((int)Math.Round(Math.Abs(5 - rnd.NextDouble() * 10)), 3);
            int currentYear = DateTime.Now.Year;
            for (int i = yearLen; i > 0; i--)
            {
                years.Add((currentYear - i).ToString());
            }
            var quarterAdded = false;
            years.ForEach(y =>
            {
                var i = years.IndexOf(y);
                var addQuarter = rnd.NextDouble() > 0.5;
                if (!quarterAdded && i == years.Count - 1)
                {
                    addQuarter = true;
                }
                if (addQuarter)
                {
                    quarterAdded = true;
                    times.ForEach(q =>
                    {
                        var addMonth = rnd.NextDouble() > 0.5;
                        int idx = times.IndexOf(q);
                        var quar = "Q" + (idx + 1);
                        if (addMonth)
                        {
                            q.ForEach(m =>
                            {
                                items.Add(new FlatDataItem()
                                {
                                    Year = y,
                                    Quarter = quar,
                                    Month = m,
                                    Value = rnd.Next(30, 40)
                                });
                            });
                        }
                        else
                        {
                            items.Add(new FlatDataItem()
                            {
                                Year = y,
                                Quarter = quar,
                                Value = rnd.Next(80, 100)
                            });
                        }
                    });
                }
                else
                {
                    items.Add(new FlatDataItem()
                    {
                        Year = y.ToString(),
                        Value = rnd.Next(80, 100)
                    });
                }
            });

            return items;
        }
    }
}
    2. Add a class, SunburstViewModel and add the following code.
      Imports C1.Chart
Imports System.Linq
Imports System.Collections.Generic
Public Class SunburstViewModel

    Public ReadOnly Property HierarchicalData() As List(Of DataItem)
        Get
            Return DataService.CreateHierarchicalData()
        End Get
    End Property

    Public ReadOnly Property FlatData() As List(Of FlatDataItem)
        Get
            Return DataService.CreateFlatData()
        End Get
    End Property

    Public ReadOnly Property Positions() As List(Of String)
        Get
            Return [Enum].GetNames(GetType(Position)).ToList()
        End Get
    End Property

    Public ReadOnly Property Palettes() As List(Of String)
        Get
            Return [Enum].GetNames(GetType(Palette)).ToList()
        End Get
    End Property
End Class

      using C1.Chart;
using System;
using System.Linq;
using System.Collections.Generic;

namespace SunburstQuickStart
{
    public class SunburstViewModel
    {
        public List<DataItem> HierarchicalData
        {
            get
            {
                return DataService.CreateHierarchicalData();
            }
        }

        public List<FlatDataItem> FlatData
        {
            get
            {
                return DataService.CreateFlatData();
            }
        }

        public List<string> Positions
        {
            get
            {
                return Enum.GetNames(typeof(Position)).ToList();
            }
        }

        public List<string> Palettes
        {
            get
            {
                return Enum.GetNames(typeof(Palette)).ToList();
            }
        }
    }
}
    3. Add a class, DataItem and add the following code.
      Public Class DataItem
    Private _items As List(Of DataItem)

    Public Property Year() As String
        Get
            Return m_Year
        End Get
        Set
            m_Year = Value
        End Set
    End Property
    Private m_Year As String
    Public Property Quarter() As String
        Get
            Return m_Quarter
        End Get
        Set
            m_Quarter = Value
        End Set
    End Property
    Private m_Quarter As String
    Public Property Month() As String
        Get
            Return m_Month
        End Get
        Set
            m_Month = Value
        End Set
    End Property
    Private m_Month As String
    Public Property Value() As Double
        Get
            Return m_Value
        End Get
        Set
            m_Value = Value
        End Set
    End Property
    Private m_Value As Double
    Public ReadOnly Property Items() As List(Of DataItem)
        Get
            If _items Is Nothing Then
                _items = New List(Of DataItem)()
            End If

            Return _items
        End Get
    End Property
End Class

Public Class FlatDataItem
    Public Property Year() As String
        Get
            Return m_Year
        End Get
        Set
            m_Year = Value
        End Set
    End Property
    Private m_Year As String
    Public Property Quarter() As String
        Get
            Return m_Quarter
        End Get
        Set
            m_Quarter = Value
        End Set
    End Property
    Private m_Quarter As String
    Public Property Month() As String
        Get
            Return m_Month
        End Get
        Set
            m_Month = Value
        End Set
    End Property
    Private m_Month As String
    Public Property Value() As Double
        Get
            Return m_Value
        End Get
        Set
            m_Value = Value
        End Set
    End Property
    Private m_Value As Double
End Class

      using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SunburstQuickStart
{
    public class DataItem
    {
        List<DataItem> _items;

        public string Year { get; set; }
        public string Quarter { get; set; }
        public string Month { get; set; }
        public double Value { get; set; }
        public List<DataItem> Items
        {
            get
            {
                if (_items == null)
                {
                    _items = new List<DataItem>();
                }

                return _items;
            }
        }
    }

    public class FlatDataItem
    {
        public string Year { get; set; }
        public string Quarter { get; set; }
        public string Month { get; set; }
        public double Value { get; set; }
    }
}
    4. Add a class, Converter and add the following code.
      Imports C1.Chart
Imports System.Collections.Generic
Imports System.Globalization
Imports System.Linq
Imports System.Text
Imports System.Threading.Tasks
Imports System.Windows.Data
Public Class EnumToStringConverter
    Implements IValueConverter
    Public Function Convert(value As Object,
                            targetType As Type,
                            parameter As Object,
                            culture As CultureInfo) As Object
        Return value.ToString()
    End Function

    Public Function ConvertBack(value As Object,
                                targetType As Type,
                                parameter As Object,
                                culture As CultureInfo) As Object
        If targetType = GetType(Position) Then
            Return DirectCast([Enum].Parse(GetType(Position),
                                           value.ToString()),
                                           Position)
        Else
            Return DirectCast([Enum].Parse(GetType(Palette),
                                           value.ToString()),
                                           Palette)
        End If
    End Function

    Private Function IValueConverter_Convert(value As Object,
                                             targetType As Type,
                                             parameter As Object,
                                             culture As CultureInfo) As Object Implements IValueConverter.Convert
        Throw New NotImplementedException()
    End Function

    Private Function IValueConverter_ConvertBack(value As Object,
                                                 targetType As Type,
                                                 parameter As Object,
                                                 culture As CultureInfo) As Object Implements IValueConverter.ConvertBack
        Throw New NotImplementedException()
    End Function
End Class

      using C1.Chart;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace SunburstQuickStart
{
    public class EnumToStringConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return value.ToString();
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (targetType == typeof(Position))
                return (Position)Enum.Parse(typeof(Position), value.ToString());
            else
                return (Palette)Enum.Parse(typeof(Palette), value.ToString());
        }
    }
}
    5. Edit the XAML code to provide data to Sunburst.

      <Window
        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:local="clr-namespace:SunburstQuickStart"
        xmlns:c1="http://schemas.componentone.com/winfx/2006/xaml" 
        x:Class="SunburstQuickStart.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="800" Width="691.337">
    <Grid Margin="0,0,0,-120">
        <Grid.Resources>
            <local:EnumToStringConverter x:Key="PaletteConverter" />
        </Grid.Resources>
        <Grid.DataContext>
            <local:SunburstViewModel />
        </Grid.DataContext>
        <c1:C1Sunburst x:Name="sunburst" 
                       Offset="0" 
                       ItemsSource="{Binding HierarchicalData}" 
                       Binding="Value" 
                       BindingName="Year,Quarter,Month" 
                       ChildItemsPath="Items" 
                       ToolTipContent="{}{name}&#x000A;{y}" 
                       Margin="0,121,73,0"  >
            <c1:C1Sunburst.DataLabel>
                <c1:PieDataLabel Position="Inside" 
                                 Content="{}{name}" 
                                 ConnectingLine="True" 
                                 Border="True">
                </c1:PieDataLabel>
            </c1:C1Sunburst.DataLabel>
        </c1:C1Sunburst>
    </Grid>
</Window>

    Running the Application

    Press F5 to run the application and observe how Sunburst chart appears.