Getting Started with WPF SunburstChart (SfSunburstChart)

This section explains you the steps required to populate the sunburst chart with data, add data labels, legends and header. This section covers only the minimal features that you need to know to get started with the Sunburst chart.

Adding assembly reference

  1. Open the Add Reference window from your project
  2. Choose Assemblies -> Extensions -> Syncfusion.SfSunburstChart.WPF

Reference Manager Dialog Windows in Visual Studio

NOTE

This window differs for the Visual Basic project.

Adding SfSunburstChart from Toolbox

Drag and drop the SfSunburstChart control from the Toolbox to your application,

Visual Studio Toolbox

Now the Syncfusion.SfSunburstChart.WPF reference is added to the application references and the namespace code is generated in MainWindow.xaml as below.

Project Solution Window contains SfSunburstChart reference

Added xmlns:syncfusion="clr-namespace:Syncfusion.UI.Xaml.SunburstChart;assembly=Syncfusion.SfSunburstChart.WPF" in MainWindow

Initialize view model

In this section, the data in the following table is used for demonstration,

Country Job Description Job Group Job Role Employees Count
America Sales 70
America Technical Testers 35
America Technical Developers Windows 105
America Technical Developers Web 40
America Management 40
America Accounts 60
India Technical Testers 25
India Technical Developers Windows 155
India Technical Developers Web 60
Germany Sales Executive 30
Germany Sales Analyst 40
UK Technical Developers Windows 100
UK Technical Developers Web 30
UK HR Executives 60
UK Marketing 40

Now, let us define a data model that represents the above data in sunburst chart.

  • c#
  • public class Model
        {
            public string Category { get; set; }
            public string Country { get; set; }
            public string JobDescription { get; set; }
            public string JobGroup { get; set; }
            public string JobRole { get; set; }
            public double EmployeesCount { get; set; }
        }

    Next, create a view model class and initialize a list of Model objects as shown below,

  • c#
  • public class ViewModel
        {
            public ObservableCollection<Model> Data { get; set; }
            public ViewModel()
            {
                Data = new ObservableCollection<Model>
                {
                    new Model
                    {
                        Country = "America", JobDescription = "Sales",
                        EmployeesCount = 70
                    },
                    new Model
                    {
                        Country = "America", JobDescription = "Technical",
                        JobGroup = "Testers", EmployeesCount = 35
                    },
                    new Model
                    {
                        Country = "America", JobDescription = "Technical",
                        JobGroup = "Developers", JobRole = "Windows", EmployeesCount = 105
                    },
                    new Model
                    {
                        Country = "America", JobDescription = "Technical",
                        JobGroup = "Developers", JobRole = "Web", EmployeesCount = 40
                    },
                    new Model
                    {
                        Country = "America", JobDescription = "Management",
                        EmployeesCount = 40
                    },
                    new Model
                    {
                        Country = "America", JobDescription = "Accounts",
                        EmployeesCount = 60
                    },
                    new Model
                    {
                        Country = "India", JobDescription = "Technical",
                        JobGroup = "Testers", EmployeesCount = 25
                    },
                    new Model
                    {
                        Country = "India", JobDescription = "Technical", JobGroup = "Developers",
                        JobRole = "Windows", EmployeesCount = 155
                    },
                    new Model
                    {
                        Country = "India", JobDescription = "Technical", JobGroup = "Developers",
                        JobRole = "Web", EmployeesCount = 60
                    },
                    new Model
                    {
                        Country = "Germany", JobDescription = "Sales", JobGroup = "Executive",
                        EmployeesCount = 30
                    },
                    new Model
                    {
                        Country = "Germany", JobDescription = "Sales", JobGroup = "Analyst",
                        EmployeesCount = 40
                    },
                    new Model
                    {
                        Country = "UK", JobDescription = "Technical", JobGroup = "Developers",
                        JobRole = "Windows", EmployeesCount = 100
                    },
                    new Model
                    {
                        Country = "UK", JobDescription = "Technical", JobGroup = "Developers",
                        JobRole = "Web", EmployeesCount = 30
                    },
                    new Model
                    {
                        Country = "UK", JobDescription = "HR Executives", EmployeesCount = 60
                    },
                    new Model
                    {
                        Country = "UK", JobDescription = "Marketing", EmployeesCount = 40
                    }
                };
            }
        }

    Set the ViewModel instance as the DataContext of your window; this is done to bind properties of ViewModel to Sunburst chart.

    NOTE

    Add namespace of ViewModel class in your XAML page if you prefer to set DataContext in XAML.

    <Window x:Class="GettingStarted.MainWindow"
            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            xmlns:local="clr-namespace:GettingStarted">
        <Window.DataContext>
             <local:ViewModel/>
        </Window.DataContext>
    this.DataContext = new ViewModel();

    Populate Sunburst chart with data

    Now, bind the Data property of the above ViewModel to the ItemsSource property.
    Add SunburstHierarchicalLevel to Levels property. Each hierarchy level is formed based on the property specified in GroupMemberPath property, and each arc segment size is calculated using ValueMemberPath.

    <sunburst:SfSunburstChart ItemsSource="{Binding Data}" ValueMemberPath="EmployeesCount">
        <sunburst:SfSunburstChart.Levels>
            <sunburst:SunburstHierarchicalLevel GroupMemberPath="Country"/>
            <sunburst:SunburstHierarchicalLevel GroupMemberPath="JobDescription"/>
            <sunburst:SunburstHierarchicalLevel GroupMemberPath="JobGroup"/>
            <sunburst:SunburstHierarchicalLevel GroupMemberPath="JobRole"/>
        </sunburst:SfSunburstChart.Levels>
    </sunburst:SfSunburstChart>
    SfSunburstChart sunburst = new SfSunburstChart();
    sunburst.ValueMemberPath = "EmployeesCount";
    sunburst.SetBinding(SfSunburstChart.ItemsSourceProperty, "Data");
    sunburst.Levels.Add(new SunburstHierarchicalLevel() {GroupMemberPath = "Country"});
    sunburst.Levels.Add(new SunburstHierarchicalLevel() {GroupMemberPath = "JobDescription"});
    sunburst.Levels.Add(new SunburstHierarchicalLevel() {GroupMemberPath = "JobGroup"});
    sunburst.Levels.Add(new SunburstHierarchicalLevel() {GroupMemberPath = "JobRole"});

    Add header

    You can add header to Sunburst chart to provide quick information to the user about the data being plotted in the chart. You can set title using Header property as shown below.

    <sunburst:SfSunburstChart Header="Employees Count" FontSize="22" />
    sunburst.Header = "Employees Count";
    sunburst.FontSize = 22d;

    Add legend

    You can enable legend using Legend property as shown below,

    <sunburst:SfSunburstChart.Legend>
        <sunburst:SunburstLegend DockPosition="Left"/>
    </sunburst:SfSunburstChart.Legend>
    SunburstLegend legend = new SunburstLegend();
    legend.DockPosition= ChartDock.Left;

    Add data labels

    You can add data labels to improve the readability of the Sunburst chart. This can be achieved using DataLabelInfo property as shown below,

    <sunburst:SfSunburstChart.DataLabelInfo>
        <sunburst:SunburstDataLabelInfo />
    </sunburst:SfSunburstChart.DataLabelInfo>
    SunburstDataLabelInfo dataLabel= new SunburstDataLabelInfo();
    sunburst.DataLabelInfo = dataLabel;

    Following is the final output screenshot,

    SfSunburstChart with data label and legend

    You can find the complete getting started sample from this link.