Bars Background

Hover over the image to see the chart animation

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 sample image

View Model

using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;

namespace ViewModelsSamples.Bars.WithBackground;

public partial class ViewModel : ObservableObject
{
    public ISeries[] Series { get; set; } =
    {
        new ColumnSeries<double>
        {
            IsHoverable = false, // disables the series from the tooltips // mark
            Values = new double[] { 10, 10, 10, 10, 10, 10, 10 },
            Stroke = null,
            Fill = new SolidColorPaint(new SKColor(30, 30, 30, 30)),
            IgnoresBarPosition = true
        },
        new ColumnSeries<double>
        {
            Values = new double[] { 3, 10, 5, 3, 7, 3, 8 },
            Stroke = null,
            Fill = new SolidColorPaint(SKColors.CornflowerBlue),
            IgnoresBarPosition = true
        }
    };

    public Axis[] YAxes { get; set; } =
    {
        new Axis { MinLimit = 0, MaxLimit = 10 }
    };
}

Code Behind

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

namespace WinFormsSample.Bars.WithBackground;

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,
            YAxes = viewModel.YAxes,

            // 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);
    }
}

Articles you might also find useful:

Cartesian chart control
Column series properties