Custom Bars

View model

using LiveChartsCore;
using LiveChartsCore.Drawing;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Drawing.Geometries;

namespace ViewModelsSamples.Bars.Custom;

public class ViewModel
{
    public ISeries[] Series { get; set; } = [
        new ColumnSeries<double> ([2, 1, 4]),

        // use the second generic parameter to define the geometry to draw
        // there are many predefined geometries in the LiveChartsCore.Drawing namespace
        // for example, the StarGeometry, CrossGeometry, RectangleGeometry and DiamondGeometry
        new ColumnSeries<double, DiamondGeometry>([4, 3, 6]),

        // You can also use SVG paths to draw the geometry
        // the VariableSVGPathGeometry can change the drawn path at runtime
        new ColumnSeries<double, VariableSVGPathGeometry>([-2, 2, 1])
        {
            GeometrySvg = SVGPoints.Star
        },

        // finally you can also use SkiaSharp to draw your own geometry
        new ColumnSeries<double, MyGeometry>([4, 5, 2])
    ];
}

MyGeometry.cs

using LiveChartsCore.Drawing;
using LiveChartsCore.SkiaSharpView.Drawing;

namespace ViewModelsSamples.Bars.Custom;

public class MyGeometry : BoundedDrawnGeometry, IDrawnElement<SkiaSharpDrawingContext>
{
    public void Draw(SkiaSharpDrawingContext context)
    {
        var paint = context.ActiveSkiaPaint;
        var canvas = context.Canvas;
        var y = Y;

        while (y < Y + Height)
        {
            canvas.DrawLine(X, y, X + Width, y, paint);
            y += 5;
        }
    }
}

Form code behind

using System.Windows.Forms;
using LiveChartsCore.SkiaSharpView.WinForms;
using ViewModelsSamples.Bars.Custom;

namespace WinFormsSample.Bars.Custom;

public partial class View : UserControl
{
    private readonly CartesianChart cartesianChart;

    public View()
    {
        InitializeComponent();
        Size = new System.Drawing.Size(50, 50);

        var viewModel = new ViewModel();

        cartesianChart = new CartesianChart
        {
            Series = viewModel.Series,

            // out of livecharts properties...
            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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