Nightingale Rose
The [ObservableObject], [ObservableProperty] and [RelayCommand] 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 System.Collections.Generic;
using LiveChartsCore;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore.SkiaSharpView.Extensions;
namespace ViewModelsSamples.Pies.NightingaleRose;
public partial class ViewModel : ObservableObject
{
public ViewModel()
{
var outer = 0;
var data = new[] { 6, 5, 4, 3, 2 };
// you can convert any array, list or IEnumerable<T> to a pie series collection:
Series = data.AsPieSeries((value, series) =>
{
// this method is called once per element in the array
// we are decrementing the outer radius 50px
// on every element in the array.
series.InnerRadius = 50;
series.OuterRadiusOffset = outer;
outer += 50;
});
}
public IEnumerable<ISeries> Series { get; set; }
}
XAML
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="XamarinSample.Pies.NightingaleRose.View"
xmlns:lvc="clr-namespace:LiveChartsCore.SkiaSharpView.Xamarin.Forms;assembly=LiveChartsCore.SkiaSharpView.XamarinForms"
xmlns:vms="clr-namespace:ViewModelsSamples.Pies.NightingaleRose;assembly=ViewModelsSamples">
<ContentPage.BindingContext>
<vms:ViewModel/>
</ContentPage.BindingContext>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<lvc:PieChart Series="{Binding Series}"></lvc:PieChart>
</Grid>
</ContentPage>
