Column Width

This sample uses C# 12 features, it also uses features from the CommunityToolkit.Mvvm package, you can learn more about it here.

This web site wraps every sample using a UserControl instance, but LiveCharts controls can be used inside any container.

sample image

View model

using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;

namespace ViewModelsSamples.Bars.Spacing;

public class ViewModel
{
    public ISeries[] Series { get; set; } = [
        new ColumnSeries<double>
        {
            Values = [ 20, 50, 40, 20, 40, 30, 50, 20, 50, 40 ],

            // Defines the distance between every bars in the series
            Padding = 0,

            // Defines the max width a bar can have
            MaxBarWidth = double.MaxValue
        }
    ];
}

XAML

<UserControl
    x:Class="UnoWinUISample.Bars.Spacing.View"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:lvc="using:LiveChartsCore.SkiaSharpView.WinUI"
    xmlns:vms="using:ViewModelsSamples.Bars.Spacing"
    mc:Ignorable="d">

    <UserControl.DataContext>
        <vms:ViewModel/>
    </UserControl.DataContext>
    <Grid>
        <lvc:CartesianChart Series="{Binding Series}"></lvc:CartesianChart>
    </Grid>
    
</UserControl>

Articles you might also find useful:

Cartesian chart control
Column series properties