Embedding JavaScript engine into .NET [closed]

Try Javascript .NET. It is hosted on GitHub It was originally hosted on CodePlex, here)

Project discussions: http://javascriptdotnet.codeplex.com/discussions

It implements Google V8. You can compile and run JavaScript directly from .NET code with it, and supply CLI objects to be used by the JavaScript code as well. It generates native code from JavaScript.

The open source JavaScript interpreter Jint (http://jint.codeplex.com) does exactly what you are looking for.

Edit:
The project has been entirely rewritten and is now hosted on Github at https://github.com/sebastienros/jint

You might also be interested in Microsoft ClearScript which is hosted on GitHub and published under the Ms-Pl licence.

I am no Microsoft fanboy, but I must admit that the V8 support has about the same functionnalities as Javascript.Net, and more important, the project is still maintained. As far as I am concerned, the support for delegates also functions better than with Spidermonkey-dotnet.

ps: It also support JScript and VBScript but we were not interested by this old stuff.

ps: It is compatible with .NET 4.0 and 4.5+

Anybody just tuning in check out Jurassic as well:

http://jurassic.codeplex.com/

edit: this has moved to github (and seems active at first glance)

https://github.com/paulbartrum/jurassic

You can try ironJS, looks promising although it is in heavy development. https://github.com/fholm/IronJS