dotnet add package NetDimension.NanUI --version
NuGet\Install-Package NetDimension.NanUI -Version
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="NetDimension.NanUI" Version="" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add NetDimension.NanUI --version
#r "nuget: NetDimension.NanUI,"
#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.
// Install NetDimension.NanUI as a Cake Addin
#addin nuget:?package=NetDimension.NanUI&version=

// Install NetDimension.NanUI as a Cake Tool
#tool nuget:?package=NetDimension.NanUI&version=


Easily buid powerful WinForm applications with HTML, CSS and JavaScript.

GitHub Nuget Nuget


WinFormium is a open source framework on .NET platform for creating user interface of WinForm Applicaitons using HTML5, CSS3, and JavaScript. It is based on the Xilium.CefGlue project, which is a .NET wrapper around the Chromium Embedded Framework.

If you are looking for a framework for creating a WinForm application with a modern user interface, WinFormium is a good choice. you can use HTML, CSS, and JavaScript to create a user interface, and use C# to write the business logic of the application.


This is a Windows Only framework, it can not run on Linux or Mac OS.

The minimum supported Windows is Windows 7 Service Pack 1, and some features (such as DirectComposition Offscreen Rendering) are not supported on Windows 7.


For Development

  • .NET Framework 4.6.2 or higher / .NET 5.0 or higher
  • Visual Studio 2019 or heigher (VS2022 is recommended)

For Deployment

  • Microsoft Windows 7 Service Pack 1 or higher
  • .Net Framework 4.6.2 or higher
  • .NET 5.0/6.0 for Windows 7 and above.
  • .NET 7.0/8.0 for Windows 10 and above.

Getting Started

Create a simple WinFormium application with the following steps:

1. Create a WinForm Application by default template

2. Install WinFormium NuGet Package

Open the NuGet Package Manager to install or use NuGet Package Manager Console, and run the following command to install WinFormium nuget package:

PM> Install-Package NetDimension.NanUI

Install the dependencies of Chromium Embedded Framework that WinFormium depends on:

PM> Install-Package NetDimension.NanUI.Runtime

3. A basic WinFormium application requires the following code:

Modify the code in the Program.cs file as follows:

using WinFormium;

class Program
    static void Main(string[] args)
        var builder = WinFormiumApp.CreateBuilder();


        var app = builder.Build();


Create a class implements WinFormiumStartup for configuring the application:

using WinFormium;

class MyAPP : WinFormiumStartup
    protected override MainWindowCreationAction? UseMainWindow(MainWindowOptions opts)
        // Configure the main window of this application
        return opts.UseMainFormium<MyWindow>();

    protected override void WinFormiumMain(string[] args)
        // The codes in Main function should be here, this function only runs in Main process. So it can prevent the codes in Main process running in sub-processes.

    protected override void ConfigurationChromiumEmbedded(ChromiumEnvironmentBuiler cef)
        // Configure the Chromium Embedded Framework here

    protected override void ConfigureServices(IServiceCollection services)
        // Configure the services of this application here

Create a class implements Formium for configuring the main window of the application:

using WinFormium;
using WinFormium.Forms;

class MyWindow : Formium
    public MyWindow()
        Url = "";

    protected override FormStyle ConfigureWindowStyle(WindowStyleBuilder builder)
        // Configure the style of the window here or leave it blank to use the default style

        var style = builder.UseSystemForm();

        style.TitleBar = false;

        style.DefaultAppTitle = "My first WinFomrim app";

        return style;

4. Build and run your WinFormium application.

Product Compatible and additional computed target framework versions.
.NET net6.0-windows7.0 is compatible.  net7.0-windows was computed.  net7.0-windows7.0 is compatible.  net8.0-windows was computed. 
.NET Framework net462 is compatible.  net463 was computed.  net47 is compatible.  net471 is compatible.  net472 is compatible.  net48 is compatible.  net481 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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Version Downloads Last updated 88 3/30/2024 109 3/13/2024 55 3/10/2024 61 3/8/2024 843 11/25/2023 301 11/3/2023
1.0.109 93 11/2/2023 1,128 10/6/2023 1,087 8/17/2023 648 8/15/2023 513 8/13/2023 557 8/12/2023 545 8/9/2023 620 8/9/2023 731 8/3/2023
0.9.100 755 7/18/2023 1,429 5/22/2023 598 5/22/2023 856 5/5/2023 1,768 2/21/2023 696 2/20/2023 757 2/19/2023 638 2/19/2023 695 2/17/2023 654 2/17/2023 928 12/29/2022 1,297 11/12/2022 871 11/1/2022 790 10/28/2022 2,299 6/30/2022 1,576 4/28/2022 925 4/28/2022 1,559 3/6/2022 1,069 3/4/2022 1,177 2/25/2022 1,160 2/11/2022 1,233 1/17/2022 1,138 1/15/2022 1,869 1/13/2022 1,288 12/1/2021 3,223 4/24/2020
0.6.3239.4 1,906 1/7/2020
0.6.2987.13 1,988 4/2/2018