Sections

This web site builds the control from code behind but you could also grab it from the toolbox, this sample also uses a ViewModel to populate the properties of the control(s) in this sample.

sample image

Code behind

using System.Windows.Forms;
using LiveChartsCore.SkiaSharpView.WinForms;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using SkiaSharp;
using ViewModelsSamples.General.Sections2;

namespace WinFormsSample.General.Sections2;

public partial class View : UserControl
{
    public View()
    {
        InitializeComponent();
        Size = new System.Drawing.Size(50, 50);

        var values = new ObservablePoint[]
        {
            new(2.2, 5.4), new(4.5, 2.5), new(4.2, 7.4),
            new(6.4, 9.9), new(4.2, 9.2), new(5.8, 3.5),
            new(7.3, 5.8), new(8.9, 3.9), new(6.1, 4.6),
            new(9.4, 7.7), new(8.4, 8.5), new(3.6, 9.6),
            new(4.4, 6.3), new(5.8, 4.8), new(6.9, 3.4),
            new(7.6, 1.8), new(8.3, 8.3), new(9.9, 5.2),
            new(8.1, 4.7), new(7.4, 3.9), new(6.8, 2.3)
        };

        var series = new ISeries[]
        {
            new ScatterSeries<ObservablePoint>
            {
                Values = values,
                GeometrySize = 10,
                Stroke = new SolidColorPaint(SKColor.Parse("#00f")),
                Fill = null
            }
        };

        var sections = new RectangularSection[]
        {
            new() {
                Yi = 8,
                Yj = 8,
                Stroke = new SolidColorPaint
                {
                    Color = SKColor.Parse("#F00"),
                    StrokeThickness = 3,
                    PathEffect = new LiveChartsCore.SkiaSharpView.Painting.Effects.DashEffect([6, 6])
                }
            },
            new() {
                Xi = 6,
                Xj = 8,
                Fill = new SolidColorPaint(SKColor.Parse("#300000FF"))
            }
        };

        var cartesianChart = new CartesianChart
        {
            Series = series,
            Sections = sections,
            Location = new System.Drawing.Point(0, 0),
            Size = new System.Drawing.Size(50, 50),
            Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top | AnchorStyles.Bottom
        };

        Controls.Add(cartesianChart);
    }
}

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