Getting Started with Xamarin Sunburst Chart (SfSunburstChart)

21 Nov 202420 minutes to read

This section explains the steps required to configure the SfSunburstChart and populate it with data, data labels, legends, and title. This section covers only the minimal features that needed to get started with the sunburst chart.

Assembly deployment

After installing Essential Studio® for Xamarin, you can find all the required assemblies in the installation folders, {Syncfusion Essential Studio Installed location} \Essential Studio\{Version #}\Xamarin\lib.

E.g.: C:\Program Files (x86) \Syncfusion\Essential Studio\19.1.0.54\Xamarin\lib

NOTE

Assemblies can be found in unzipped package location(Documents/Syncfusion/{Version #}/Xamarin/lib) in Mac.

Adding SfSunburstChart reference

You can add SfSunburstChart reference using one of the following methods:

Method 1: Adding SfSunburstChart reference from nuget.org

Syncfusion Xamarin components are available in nuget.org. To add SfSunburstChart to your project, open the NuGet package manager in Visual Studio, search for Syncfusion.Xamarin.SfSunburstChart, and then install it.

Adding SfSunburstChart reference from NuGet

NOTE

Install the same version of SfSunburstChart NuGet in all the projects.

Method 2: Adding SfSunburstChart reference from toolbox

Syncfusion also provides Xamarin Toolbox. Using this toolbox, you can drag the SfSunburstChart control to the XAML page. It will automatically install the required NuGet packages and add the namespace to the page. To install Syncfusion Xamarin Toolbox, refer to Toolbox.

Method 3: Adding SfSunburstChart assemblies manually from the installed location

If you prefer to manually reference the assemblies instead referencing from NuGet, add the following assemblies in respective projects.

Location: {Installed location}/{version}/Xamarin/lib

PCL	Syncfusion.SfSunburstChart.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Licensing.dll
Android	Syncfusion.SfSunburstChart.Android.dll Syncfusion.SfSunburstChart.XForms.Android.dll Syncfusion.SfSunburstChart.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.Android.dll Syncfusion.Licensing.dll
iOS	Syncfusion.SfSunburstChart.iOS.dll Syncfusion.SfSunburstChart.XForms.iOS.dll Syncfusion.SfSunburstChart.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.iOS.dll Syncfusion.Licensing.dll
UWP	Syncfusion.SfSunburstChart.UWP.dll Syncfusion.SfSunburstChart.XForms.UWP.dll Syncfusion.SfSunburstChart.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.UWP.dll Syncfusion.Licensing.dll

NOTE

To know more about obtaining our components, refer to these links for Mac and Windows.

IMPORTANT

Starting with v16.2.0.x, if you reference Syncfusion assemblies from the trial setup or from the NuGet feed, you also have to include a license key in your projects. Please refer to Syncfusion license key to know about registering Syncfusion license key in your Xamarin application to use our components.

Launching an application on each platform with SfSunburstChart.

To use the SfSunburstChart control inside an application, each platform requires some additional configurations. The configurations vary from platform to platform and is discussed in the following sections:

NOTE

If you are adding the references from toolbox, this step is not needed.

iOS

To launch the SfSunburstChart in iOS, call the SfSunburstChartRenderer.Init() in the FinishedLaunching overridden method of the AppDelegate class after the Xamarin.Forms Framework has been initialized and before the LoadApplication is called, as demonstrated in the following code example.

public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
    …
    global::Xamarin.Forms.Forms.Init ();
    Syncfusion.SfSunburstChart.XForms.iOS.SfSunburstChartRenderer.Init();
    LoadApplication (new App ());
    …
}

Universal Windows Platform (UWP)

You need to initialize the sunburst view assemblies in App.xaml.cs in UWP project as demonstrated in the following code samples. This is required to deploy the application with sunburst in Release mode in UWP platform.

// In App.xaml.cs

protected override void OnLaunched(LaunchActivatedEventArgs e)
    {
        …
    	    rootFrame.NavigationFailed += OnNavigationFailed;
    
        // Add `using System.Reflection;`
        List<Assembly> assembliesToInclude = new List<Assembly>();
    
        // Now, add all the assemblies your app uses                 
        assembliesToInclude.Add(typeof(Syncfusion.SfSunburstChart.XForms.UWP.SfSunburstChartRenderer).GetTypeInfo().Assembly);
		
        // Replaces Xamarin.Forms.Forms.Init(e);        
        Xamarin.Forms.Forms.Init(e, assembliesToInclude);	
        …     
    }

Android

The Android platform does not require any additional configuration to render the sunburst.

Initialize sunburst chart

Import the SfSunburstChart namespace as shown as follows.

XAML
C#
xmlns:sunburst="clr-namespace:Syncfusion.SfSunburstChart.XForms;assembly=Syncfusion.SfSunburstChart.XForms"
using Syncfusion.SfSunburstChart.XForms;

Then, initialize an empty sunburst chart as shown as follows.

XAML
C#
<sunburst:SfSunburstChart>
    
  </sunburst:SfSunburstChart>
SfSunburstChart sunburst = new SfSunburstChart();

  this.Content = sunburst;

Initialize view model

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

Country	Job description	Job group	Job role	Employees count
United States	Sales	Executive		50
United States	Sales	Analyst		40
United States	Marketing			40
United States	Technical	Testers		35
United States	Technical	Developers	Windows	175
United States	Technical	Developers	Web	70
United States	Management			40
United States	Accounts			60
India	Technical	Testers		33
India	Technical	Developers	Windows	125
India	Technical	Developers	Web	60
India	HR Executives			70
India	Accounts			45
Germany	Sales	Executive		30
Germany	Sales	Analyst		40
Germany	Marketing			50
Germany	Technical	Testers		40
Germany	Technical	Developers	Windows	65
Germany	Technical	Developers	Web	27
Germany	Management			33
Germany	Accounts			55
UK	Technical	Testers		25
UK	Technical	Developers	Windows	96
UK	Technical	Developers	Web	55
UK	HR executives			60
UK	Accounts			30

Define a data model that represents the above data in SfSunburstChart.

C#
public class SunburstModel
 {
    public string JobDescription { get; set; }
    public string JobGroup { get; set; }
    public string JobRole { get; set; }
    public double EmployeesCount { get; set; }
    public string Country { get; set; }
 }

Then, create a view model class, and initialize a list of SunburstModel objects as follows.

C#
public class SunburstViewModel
 {
        public ObservableCollection<SunburstModel> DataSource { get; set; }
        public SunburstViewModel()
        {
            this.DataSource = new ObservableCollection<SunburstModel>
            {
                new SunburstModel { Country = "USA", JobDescription = "Sales", JobGroup="Executive", EmployeesCount = 50 },
                new SunburstModel { Country = "USA", JobDescription = "Sales", JobGroup = "Analyst", EmployeesCount = 40 },
                new SunburstModel { Country = "USA", JobDescription = "Marketing", EmployeesCount = 40 },
                new SunburstModel { Country = "USA", JobDescription = "Technical", JobGroup = "Testers", EmployeesCount = 35 },
                new SunburstModel { Country = "USA", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Windows", EmployeesCount = 175 },
                new SunburstModel { Country = "USA", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Web", EmployeesCount = 70 },
                new SunburstModel { Country = "USA", JobDescription = "Management", EmployeesCount = 40 },
                new SunburstModel { Country = "USA", JobDescription = "Accounts", EmployeesCount = 60 },

                new SunburstModel { Country = "India", JobDescription = "Technical", JobGroup = "Testers", EmployeesCount = 33 },
                new SunburstModel { Country = "India", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Windows", EmployeesCount = 125 },
                new SunburstModel { Country = "India", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Web", EmployeesCount = 60 },
                new SunburstModel { Country = "India", JobDescription = "HR Executives", EmployeesCount = 70 },
                new SunburstModel { Country = "India", JobDescription = "Accounts", EmployeesCount = 45 },

                new SunburstModel { Country = "Germany", JobDescription = "Sales", JobGroup = "Executive", EmployeesCount = 30 },
                new SunburstModel { Country = "Germany", JobDescription = "Sales", JobGroup = "Analyst", EmployeesCount = 40 },
                new SunburstModel { Country = "Germany", JobDescription = "Marketing", EmployeesCount = 50 },
                new SunburstModel { Country = "Germany", JobDescription = "Technical", JobGroup = "Testers", EmployeesCount = 40 },
                new SunburstModel { Country = "Germany", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Windows", EmployeesCount = 65 },
                new SunburstModel { Country = "Germany", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Web", EmployeesCount = 27 },
                new SunburstModel { Country = "Germany", JobDescription = "Management", EmployeesCount = 33 },
                new SunburstModel { Country = "Germany", JobDescription = "Accounts", EmployeesCount = 55 },

                new SunburstModel { Country = "UK", JobDescription = "Technical", JobGroup = "Testers", EmployeesCount = 25 },
                new SunburstModel { Country = "UK", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Windows", EmployeesCount = 96 },
                new SunburstModel { Country = "UK", JobDescription = "Technical", JobGroup = "Developers", JobRole = "Web", EmployeesCount = 55 },
                new SunburstModel { Country = "UK", JobDescription = "HR Executives", EmployeesCount = 60 },
                new SunburstModel { Country = "UK", JobDescription = "Accounts", EmployeesCount = 30 }
            };
        }
 }

Set the SunburstViewModel instance as the BindingContext of your page to bind the properties of SunburstViewModel to SfSunburstChart.

NOTE

Add the namespace of SunburstViewModel class in your XAML page if you set the BindingContext in XAML.

XAML
C#
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:SunburstDemo"
             xmlns:sunburst="clr-namespace:Syncfusion.SfSunburstChart.XForms;assembly=Syncfusion.SfSunburstChart.XForms"
             x:Class="SunburstDemo.MainPage">

	  <ContentPage.BindingContext>
          <local:SunburstViewModel></local:SunburstViewModel>
      </ContentPage.BindingContext>
 
  </ContentPage>
this.BindingContext = new SunburstViewModel();

Populate sunburst chart with data

Bind the DataSource property of the above SunburstViewModel to the ItemsSource property.
Then, add the SunburstHierarchicalLevel to Levels collection. Each hierarchy level is formed based on the property specified in GroupMemberPath property, and each arc segment size is calculated using the ValueMemberPath property.

XAML
C#
<sunburst:SfSunburstChart x:Name="sunburstChart" ItemsSource="{Binding DataSource}"
                                  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 sunburstChart = new SfSunburstChart();           
  sunburstChart.SetBinding(SfSunburstChart.ItemsSourceProperty, "DataSource");
  sunburstChart.ValueMemberPath = "EmployeesCount";
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "Country" });
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "JobDescription" });
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "JobGroup" });
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "JobRole" });
  this.Content = sunburstChart;

SfSunburstChart

Add title

You can add title to the sunburst chart to provide information to users about the data being plotted in the chart. You can set title using the SfSunburstChart.Title property.

XAML
C#
<sunburst:SfSunburstChart>    

      <sunburst:SfSunburstChart.Title>
         <sunburst:SunburstChartTitle x:Name="title" Text="Employees Count"></sunburst:SunburstChartTitle>
      </sunburst:SfSunburstChart.Title> 

  </sunburst:SfSunburstChart>
SfSunburstChart sunburstChart = new SfSunburstChart();
  sunburstChart.Title = new SunburstChartTitle();
  sunburstChart.Title.Text = "Employees Count";
  this.Content = sunburstChart;

SfSunburstChart

Add legend

You can enable legend using the SfSunburstChart.Legend property.

XAML
C#
<sunburst:SfSunburstChart>

      <sunburst:SfSunburstChart.Legend>
            <sunburst:SunburstChartLegend x:Name="legend" IsVisible="True" >                      
            </sunburst:SunburstChartLegend>
      </sunburst:SfSunburstChart.Legend>

  </sunburst:SfSunburstChart>
SfSunburstChart sunburstChart = new SfSunburstChart();
  sunburstChart.Legend = new SunburstChartLegend();
  sunburstChart.Legend.IsVisible = true;
  this.Content = sunburstChart;

SfSunburstChart

Add data labels

You can add data labels to improve the readability of the sunburst chart. Data labels can be added using the SfSunburstChart.DataLabel property.

XAML
C#
<sunburst:SfSunburstChart>

       <sunburst:SfSunburstChart.DataLabel>
           <sunburst:SunburstChartDataLabel x:Name="dataLabel" ShowLabel="True">
           </sunburst:SunburstChartDataLabel>
       </sunburst:SfSunburstChart.DataLabel>

  </sunburst:SfSunburstChart>
SfSunburstChart sunburstChart = new SfSunburstChart();  
  sunburstChart.DataLabel = new SunburstChartDataLabel();
  sunburstChart.DataLabel.ShowLabel = true;
  this.Content = sunburstChart;

SfSunburstChart

Below snippet is the complete code for generating the final output.

XAML
C#
<sunburst:SfSunburstChart x:Name="sunburstChart" ItemsSource="{Binding DataSource}"
            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.Title>
          <sunburst:SunburstChartTitle x:Name="title" Text="Employees Count" ></sunburst:SunburstChartTitle>
      </sunburst:SfSunburstChart.Title>

      <sunburst:SfSunburstChart.Legend>
          <sunburst:SunburstChartLegend x:Name="legend" IsVisible="True" >
          </sunburst:SunburstChartLegend>
      </sunburst:SfSunburstChart.Legend>

      <sunburst:SfSunburstChart.DataLabel>
          <sunburst:SunburstChartDataLabel x:Name="dataLabel" ShowLabel="True"></sunburst:SunburstChartDataLabel>
      </sunburst:SfSunburstChart.DataLabel>

  </sunburst:SfSunburstChart>
this.BindingContext = new SunburstViewModel();

  SfSunburstChart sunburstChart = new SfSunburstChart();

  sunburstChart.SetBinding(SfSunburstChart.ItemsSourceProperty, "DataSource");
  sunburstChart.ValueMemberPath = "EmployeesCount";
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "Country" });
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "JobDescription" });
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "JobGroup" });
  sunburstChart.Levels.Add(new SunburstHierarchicalLevel() { GroupMemberPath = "JobRole" });
                       
  sunburstChart.Title = new SunburstChartTitle();
  sunburstChart.Title.Text = "Employees Count";

  sunburstChart.Legend = new SunburstChartLegend();
  sunburstChart.Legend.IsVisible = true;

  sunburstChart.DataLabel = new SunburstChartDataLabel();
  sunburstChart.DataLabel.ShowLabel = true;

  this.Content = sunburstChart;

The following screenshot depicts the final output.

SfSunburstChart with data label and legend

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

Getting Started with Xamarin Sunburst Chart (SfSunburstChart)

Assembly deployment

Adding SfSunburstChart reference

Launching an application on each platform with SfSunburstChart.

iOS

Universal Windows Platform (UWP)

Android

Initialize sunburst chart

Initialize view model

Populate sunburst chart with data

Add title

Add legend

Add data labels

See also