Custom
View model
using System.Collections.Generic;
using LiveChartsCore;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;
using System;
using LiveChartsCore.SkiaSharpView.Extensions;
namespace ViewModelsSamples.Pies.Custom;
public partial class ViewModel : ObservableObject
{
public ViewModel()
{
var outer = 0;
var data = new[] { 6, 5, 4, 3 };
// 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, so:
// for the series with the value 6, we set the OuterRadiusOffset to 0
// for the series with the value 5, the OuterRadiusOffset is 50
// for the series with the value 4, the OuterRadiusOffset is 100
// for the series with the value 3, the OuterRadiusOffset is 150
series.OuterRadiusOffset = outer;
outer += 50;
series.DataLabelsPaint = new SolidColorPaint(SKColors.White)
{
SKTypeface = SKTypeface.FromFamilyName("Arial", SKFontStyle.Bold)
};
series.ToolTipLabelFormatter =
point =>
{
var pv = point.Coordinate.PrimaryValue;
var sv = point.StackedValue!;
var a = $"{pv}/{sv.Total}{Environment.NewLine}{sv.Share:P2}";
return a;
};
series.DataLabelsFormatter =
point =>
{
var pv = point.Coordinate.PrimaryValue;
var sv = point.StackedValue!;
var a = $"{pv}/{sv.Total}{Environment.NewLine}{sv.Share:P2}";
return a;
};
});
}
public IEnumerable<ISeries> Series { get; set; }
}
HTML
@page "/Pies/Custom"
@using LiveChartsCore.SkiaSharpView.Blazor
@using ViewModelsSamples.Pies.Custom
<PieChart
Series="ViewModel.Series"
InitialRotation="-90">
</PieChart>
@code {
public ViewModel ViewModel { get; set; } = new();
}
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