Lumi 0.2.0-preview.2

This is a prerelease version of Lumi.

There is a newer prerelease version of this package available.
See the version list below for details.

dotnet add package Lumi --version 0.2.0-preview.2

NuGet\Install-Package Lumi -Version 0.2.0-preview.2

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="Lumi" Version="0.2.0-preview.2" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Lumi" Version="0.2.0-preview.2" />
                    

                            Directory.Packages.props

<PackageReference Include="Lumi" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add Lumi --version 0.2.0-preview.2

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Lumi, 0.2.0-preview.2"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package Lumi@0.2.0-preview.2

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=Lumi&version=0.2.0-preview.2&prerelease
                    

                            Install as a Cake Addin

#tool nuget:?package=Lumi&version=0.2.0-preview.2&prerelease
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Lumi

A native C# GUI framework that uses HTML and CSS as the authoring syntax, rendered via SkiaSharp.

Write desktop UI with HTML for structure and CSS for styling, while rendering everything natively through Skia. The result is a lightweight, fast, single-process desktop application with no web runtime overhead.

Quick Start

dotnet new install Lumi.Templates
dotnet new lumi -n MyApp
cd MyApp
dotnet run

Features

HTML Templates — Define UI structure using standard HTML markup
CSS Styling — Full cascade, specificity, inheritance, 86 properties, CSS variables
Native Rendering — SkiaSharp paints every pixel; no browser, no WebView
Flexbox Layout — Facebook Yoga powers the layout engine
SDL3 Windowing — Cross-platform window management and input
Data Binding — One-way, two-way, and one-time binding to INotifyPropertyChanged view models
Components — Button, Checkbox, Slider, Dialog, Dropdown, TextBox, List
Animations — Fluent tween API with easing functions + CSS transitions
Hot Reload — Live HTML/CSS editing with instant refresh
Inspector — Press F12 for a DevTools-style box model overlay

Example

using Lumi;

LumiApp.Run(new MainWindow());

public class MainWindow : Window
{
    public MainWindow()
    {
        Title = "MyApp";
        Width = 960;
        Height = 680;

        var dir = AppContext.BaseDirectory;
        LoadTemplate(Path.Combine(dir, "MainWindow.html"));
        LoadStyleSheet(Path.Combine(dir, "MainWindow.css"));
    }
}

Prerequisites

.NET 10 SDK or later

Learn More

Product	Compatible and additional computed target framework versions.
.NET	net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net10.0
- AngleSharp (>= 1.4.0)
- HarfBuzzSharp (>= 8.3.1.3)
- ppy.SDL3-CS (>= 2026.320.0)
- SkiaSharp (>= 3.119.2)
- SkiaSharp.NativeAssets.Win32 (>= 3.119.2)
- Yoga-CS (>= 1.0.0)

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
0.3.0-preview.2	65	4/19/2026
0.3.0-preview.1.1	66	4/13/2026
0.3.0-preview.1	79	4/12/2026
0.2.0-preview.3	64	4/8/2026
0.2.0-preview.2	53	4/8/2026