Basic Pie
The [ObservableObject], [ObservableProperty] and [ICommand] attributes come from the
CommunityToolkit.Mvvm package, you can read more about it
here.
This web site wraps every sample using a ContentPage instance, but LiveCharts controls can be used inside any container.
View model
using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;
using CommunityToolkit.Mvvm.ComponentModel;
namespace ViewModelsSamples.Pies.Basic;
[ObservableObject]
public partial class ViewModel
{
public ViewModel()
{
Series = new ISeries[]
{
new PieSeries<double> { Values = new double[] { 2 }, Name = "Slice 1" },
new PieSeries<double> { Values = new double[] { 4 }, Name = "Slice 2" },
new PieSeries<double> { Values = new double[] { 1 }, Name = "Slice 3" },
new PieSeries<double> { Values = new double[] { 4 }, Name = "Slice 4" },
new PieSeries<double> { Values = new double[] { 3 }, Name = "Slice 5" }
};
// the next code is equivalent to the previous one, // mark
// but using the AsLiveChartsPieSeries() extension.
// you could convert any IEnumerable to a pie series collection
// so it is easier to convert an array or collection of data to a pie chart.
//var data = new List<double> { 2, 4, 1, 4, 3 };
//Series = data.AsLiveChartsPieSeries();
// and the name property? try this: // mark
//Series = data.AsLiveChartsPieSeries((value, series) =>
//{
// // here you can configure the series assigned to each value.
// series.Name = $"Series for value {value}";
//});
}
public ISeries[] Series { get; set; }
}
XAML
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="MauiSample.Pies.Basic.View"
xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:lvc="clr-namespace:LiveChartsCore.SkiaSharpView.Maui;assembly=LiveChartsCore.SkiaSharpView.Maui"
xmlns:vms="clr-namespace:ViewModelsSamples.Pies.Basic;assembly=ViewModelsSamples"
>
<ContentPage.BindingContext>
<vms:ViewModel/>
</ContentPage.BindingContext>
<lvc:PieChart Series="{Binding Series}" LegendPosition="Right"/>
</ContentPage>
