Programming language: C#
License: MIT License
Tags: GUI    
Latest version: v1.7.0

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Build status NuGet Badge MIT License


What is Neutronium?

  • Neutronium is a library to create .NET desktop applications using HTML, CSS and javascript.

  • Neutronium uses MVVM pattern exactly the same way as WPF application.

  • Neutronium provides bindings with Vue.js and Knockout.js to build powerful HTML5 UI.

Why Neutronium?

  • Use all the power of the javascript stack to build .NET desktop applications.

  • Easy to use:

    • Architecture Neutronium application just like standard WPF application.
    • Compatible with popular MVVM libraries such as MVVM Light Toolkit and reactiveUi
    • Use standard javascript frameworks to build UI
  • Easy to set-up:

  • Build UI on a 100% Open Source Stack

Uses cases

  • [Create an application from scratch](./Documentation/Content/UsesCases/New_project.md)

  • Migrate an existing WPF MVVM application to Neutronium

  • Use Neutronium to embed an HTML control in an WPF application

Main features

  • Reactive to property and collection changes

    • Two way-binding beetween view and viewmodel, including command binding
  • Pluggable architecture:

    • Easily plug-in new javascript frameworks or even embedded browser.


  • Neutronium combines Chromium via ChromiumFx C# lib and a binding engine that converts back and forth C# POCO to javascript POCO.
  • Javascript objects are then used as ViewModel for javascript MVVM library such as [knockout.js]("http://knockoutjs.com/) or Vue.js.
  • Listeners are set-up on C# and javascript side for two-way binding.

On the shoulders of giants

Usage - Example

ViewModel (C#)

public class ViewModelBase : INotifyPropertyChanged
    public event PropertyChangedEventHandler PropertyChanged;

    protected void Set<T>(ref T pnv, T value, string pn)
        pnv = value;
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(pn));

public class Skill
    public string Type { get;}
    public string Name { get;}

    public Skill (string name, string skillType)
        Name = name;
        Type = skillType;

public class Person: ViewModelBase
    private string _LastName;
    public string LastName
        get { return _LastName; }
        set { Set(ref _LastName, value, "LastName"); }

    private string _Name;
    public string Name
        get { return _Name; }
        set { Set(ref _Name, value, "Name"); }

    public IList<Skill> Skills { get; private set; }

    public ICommand RemoveSkill { get; private set; }

    public Person()
        Skills = new ObservableCollection<Skill>();
        RemoveSkill = new RelayCommand<Skill>(s=> this.Skills.Remove(s));

View (HTML)

  • First option: use Vue.js HTML <!doctype html> <html> <head> <title>Vue.js Example</title> </head> <body> <input type="text" v-model="viewModel.Name" placeholder="First name" > <ul> <li v-for="skill in viewModel.Skills"> <span>{{skill.Type}}:{{skill.Name}}</span> <button @click="RemoveSkill.Execute(skill)">Remove skill</button> </li> </ul> <div> <h2>{{viewModel.Name}}</h2> <h2>{{viewModel.LastName}}</h2> </div> </body> </html>

Create the component(C# Xaml)

<Neutronium:HTMLViewControl Uri="pack://application:,,,/src/index.html" />

The binding is done on the DataContext property just as standard WPF, That's it!



Get started

Best way to start with Neutronium is to download template C# solution from visual studio gallery.

See Here for detailed instructions.

Complete Documentation


Comparison with other libraries:

  • Electron

    Neutronium is electron for .NET? Well, kind of. Neutronium however is a higher abstraction so that you don't need to care about Chromium implementation such as renderer or browser processes.

  • Awesomium

    Different from other libraries Awesomium is not open source. Last update was embedding Chrome 19 so it is pretty out of date. One neutronium distribution offer Awesomium as WebBrowser.

  • CefGlue, ChromiumFx, CefSharp

    All are open source libraries presenting up-to-date C# binding for CEF

    Offers all API of CEF. Used by Neutronium as a test WebBrowser using the mono-process option.

    Same as CefGlue + remote API that handles communication between Chromium processes. Neutronium recommended set-up uses ChromiumFx as a WebBrowser.

    Well documented and package solution (including nuget). Does not offer all CEF binding to javascript however.

Nuget packages

ChromiumFx browser and Vue.js

ChromiumFx browser and knockout.js

This project is a continuation and improvement of MVVM-for-awesomium.


[Jetbrains logo](./Deploy/jetbrains-variant-3.svg?sanitize=true)

Many thanks to JetBrains for support and awesome Resharper!

*Note that all licence references and agreements mentioned in the Neutronium README section above are relevant to that project's source code only.