Getting Started with WinUI Charts (SfCircularChart)

11 Aug 202110 minutes to read

This section explains how to populate the circular chart with data, header, data labels, legend, and tooltips, as well as the essential aspects for getting started with the chart.

Creating an application with WinUI Chart (SfCircularChart)

  1. Create a WinUI 3 desktop app for C# and .NET 5.
  2. Add reference to Syncfusion.Chart.WinUI NuGet.
  3. Import the control namespace Syncfusion.UI.Xaml.Charts in XAML or C# to initialize the control.
  4. Initialize SfCircularChart control.
<Window
    x:Class="ChartDemo.MainWindow"
    . . .
    xmlns:chart="using:Syncfusion.UI.Xaml.Charts">

    <chart:SfCircularChart/>
</Window>
using Syncfusion.UI.Xaml.Charts;
. . .
public sealed partial class MainWindow : Window
{
    public MainWindow()
    {
        this.InitializeComponent();
        SfCircularChart chart = new SfCircularChart();
        . . .
        this.Content = chart;
    }
}

Initialize View Model

Now, let us define a simple data model that represents a data point in chart.

public class Sales
{
    public string Product { get; set; }

    public double SalesRate { get; set; }
}

Next, create a view model class and initialize a list of Model objects as follows.

public class ChartViewModel
{
    public List<Sales> Data { get; set; }

    public ChartViewModel()
    {
        Data = new List<Sales>()
        {
            new Sales(){Product = "iPad", SalesRate = 25},
            new Sales(){Product = "iPhone", SalesRate = 35},
            new Sales(){Product = "MacBook", SalesRate = 15},
            new Sales(){Product = "Mac", SalesRate = 5},
            new Sales(){Product = "Others", SalesRate = 10},
        };
    }
}

Create a ViewModel instance and set it as the chart’s DataContext. This enables property binding from ViewModel class.

NOTE

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

<Window
    . . .
    xmlns:chart="using:Syncfusion.UI.Xaml.Charts"
    xmlns:model="using:ChartDemo.ViewModel">

    <chart:SfCircularChart>
        <chart:SfCircularChart.DataContext>
            <model:ChartViewModel/>
        </chart:SfCircularChart.DataContext>
    </chart:SfCircularChart>
</Window>
ChartViewModel viewModel = new ChartViewModel();
chart.DataContext = viewModel;

Populate Chart with Data

Adding PieSeries to the chart Series collection and binding Data to the series ItemsSource property from its DataContext for creating our own Product – Sales Pie chart.

NOTE

To plot the series, the XBindingPath and YBindingPath properties must be configured so that the chart may get values from the respective properties in the data model.

<chart:SfCircularChart>
. . .
    <chart:SfCircularChart.Series>
        <chart:PieSeries ItemsSource="{Binding Data}" 
                         XBindingPath="Product" 
                         YBindingPath="SalesRate"/>
    </chart:SfCircularChart.Series>
</chart:SfCircularChart>
SfCircularChart chart = new SfCircularChart();

ChartViewModel viewModel = new ChartViewModel();
chart.DataContext = viewModel;

PieSeries series = new PieSeries();
series.SetBinding(PieSeries.ItemsSourceProperty, new Binding() { Path = new PropertyPath("Data") });
series.XBindingPath = "Product";
series.YBindingPath = "SalesRate";

chart.Series.Add(series);
. . .

Add Title

The header of the chart acts as the title to provide quick information to the user about the data being plotted in the chart. You can set title using the Header property of circular chart as follows.

<chart:SfCircularChart Header="PRODUCT SALES">
    . . .
</chart:SfCircularChart>
SfCircularChart chart = new SfCircularChart();
. . .
chart.Header = "PRODUCT SALES";

Enable Data Labels

The ShowDataLabels property of CircularSeries can be used to enable data labels to improve the readability of the circular chart. The label visibility is set to False by default.

<chart:SfCircularChart>
. . .
    <chart:PieSeries ShowDataLabels="True"
                     ItemsSource="{Binding Data}" 
                     XBindingPath="Product" 
                     YBindingPath="SalesRate"/>
</chart:SfCircularChart>
SfCircularChart chart = new SfCircularChart();
. . .
PieSeries series = new PieSeries();
series.ShowDataLabels = true;

chart.Series.Add(series);

Enable Legend

The legend provides information about the data point displayed in the circular chart. The Legend property of the chart was used to enable it.

<chart:SfCircularChart>
    . . .
    <chart:SfCircularChart.Legend>
        <chart:ChartLegend/>
    </chart:SfCircularChart.Legend>
</chart:SfCircularChart>
SfCircularChart chart = new SfCircularChart();
. . .
chart.Legend = new ChartLegend();

Enable Tooltip

Tooltips are used to show information about the segment, when mouse over on it. Enable tooltip by setting series ShowTooltip property as true.

<chart:SfCircularChart>
. . .
    <chart:PieSeries ShowTooltip="True"/>
</chart:SfCircularChart>
SfCircularChart chart = new SfCircularChart();
. . .
PieSeries series = new PieSeries();
series.ShowTooltip = true;

chart.Series.Add(series);

The following code example gives you the complete code of above configurations.

<chart:SfCircularChart Header="PRODUCT SALES">
    <chart:SfCircularChart.DataContext>
        <model:ChartViewModel/>
    </chart:SfCircularChart.DataContext>
    <chart:SfCircularChart.Legend>
        <chart:ChartLegend/>
    </chart:SfCircularChart.Legend>
    <chart:SfCircularChart.Series>
        <chart:PieSeries ItemsSource="{Binding Data}" ShowDataLabels="True"
                         XBindingPath="Product" ShowTooltip="True"
                         YBindingPath="SalesRate">
        </chart:PieSeries>
    </chart:SfCircularChart.Series>
</chart:SfCircularChart>
using Syncfusion.UI.Xaml.Charts;
. . .
public sealed partial class MainWindow : Window
{
    public MainWindow()
    {
        SfCircularChart chart = new SfCircularChart();

        chart.Header = "PRODUCT SALES";
        chart.Legend = new ChartLegend();
        ChartViewModel viewModel = new ChartViewModel();
        chart.DataContext = viewModel;

        PieSeries series = new PieSeries();
        series.SetBinding(PieSeries.ItemsSourceProperty, new Binding() { Path = new PropertyPath("Data") });
        series.XBindingPath = "Product";
        series.YBindingPath = "SalesRate";
        series.ShowTooltip = true;
        series.ShowDataLabels = true;

        chart.Series.Add(series);
        this.Content = chart;
    }
}

Pie chart in WinUI Chart

NOTE

Download demo application from GitHub