# \[ANN\] IronRuby CTP for .NET 4.0 Beta 2

**URL:** <https://www.ruby-forum.com/t/ann-ironruby-ctp-for-net-4-0-beta-2/177681>\
**Category:** IronRuby\
**Created:** [October 21, 2009, 10:04pm UTC](https://www.ruby-forum.com/t/ann-ironruby-ctp-for-net-4-0-beta-2/177681 "2009-10-21T22:04:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [October 21, 2009, 10:04pm UTC](https://www.ruby-forum.com/t/ann-ironruby-ctp-for-net-4-0-beta-2/177681/1 "2009-10-21T22:04:34Z")

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[http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=33305](http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=33305)

We’re pleased to announce the release of the “IronRuby CTP for .NET 4.0  
Beta 2”. This is our  
third preview of IronRuby running under the Dynamic Language Runtime  
that is built directly  
into a .NET 4.0 release. As before, this release allows you to use  
IronRuby objects and types  
as .NET 4.0 dynamic objects from within C# and Visual Basic code. These  
binaries are roughly  
equivalent to the functionality found in IronRuby 0.9. Please also note  
that the IronRuby CTP  
for .NET 4.0 Beta 2 will run only under .NET 4.0 Beta 2.

This release also includes the binaries for the IronPython 2.6 CTP for  
.NET 4.0 Beta 2.

To try out this release:

- Install NET 4.0 Beta 2 or Visual Studio 2010 Beta 2:  
[Visual Studio: IDE and Code Editor for Software Developers and Teams](http://msdn.microsoft.com/en-us/vstudio/dd582936.aspx)
- Download this release:  
[http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=33305](http://ironruby.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=33305)
- Follow any of the many dynamic walkthroughs online. This would be a  
good start:  
[Visual Basic Blog](http://blogs.msdn.com/vbteam/archive/2008/12/17/walkthrough-dynamic-programming-in-visual-basic-10-0-and-c-4-0-lisa-feigenbaum.aspx)

To build IronRuby for .NET 4.0 Beta 2 from source, get the sources from  
GitHub ([http://github.com/ironruby/ironruby](http://github.com/ironruby/ironruby)), or a direct download  
([http://github.com/ironruby/ironruby/zipball/master](http://github.com/ironruby/ironruby/zipball/master)): use the “v4” build  
configurations.

~ IronRuby team

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<div class="post-metadata">

**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [October 22, 2009, 11:38am UTC](https://www.ruby-forum.com/t/ann-ironruby-ctp-for-net-4-0-beta-2/177681/2 "2009-10-22T11:38:21Z")

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FYI, here’s a post which gives a little bit more information, including  
a small example of C# “dynamic” and IronRuby working together:  
[http://blog.jimmy.schementi.com/2009/10/ironruby-and-ironpython-ctps-for-net-40.html](http://blog.jimmy.schementi.com/2009/10/ironruby-and-ironpython-ctps-for-net-40.html)