# Unable to load 'System.Windows.Forms' **URL:** \ **Category:** IronRuby\ **Created:** [November 24, 2007, 1:41am UTC](https://www.ruby-forum.com/t/unable-to-load-system-windows-forms/121119 "2007-11-24T01:41:54Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![nfe](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f07891/32.png) [@nfe](https://www.ruby-forum.com/u/nfe)\ **Post date:** [November 24, 2007, 1:41am UTC](https://www.ruby-forum.com/t/unable-to-load-system-windows-forms/121119/1 "2007-11-24T01:41:54Z")
Hi, After building IronRuby with the ‘rake compile config=release’ option (according to [http://ironruby.rubyforge.org/wiki/wiki.pl?BuildingIronRuby](http://ironruby.rubyforge.org/wiki/wiki.pl?BuildingIronRuby)), I am having problems with \>\>\> require ‘System.Windows.Forms’…this is what I get from the interpreter: Ruby.Runtime.LoadError: Could not load file or assembly ‘System.Windows.Forms’ o r one of its dependencies. The system cannot find the file specified. —\> Syste m.IO.FileNotFoundException: Could not load file or assembly ‘System.Windows.Form s’ or one of its dependencies. The system cannot find the file specified. File name: ‘System.Windows.Forms’ at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, E vidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Bool ean throwOnFileNotFound, Boolean forIntrospection) at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence as semblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) at System.Reflection.Assembly.Load(String assemblyString) at Microsoft.Scripting.Hosting.PlatformAdaptationLayer.LoadAssembly(String na me) at Ruby.Runtime.Loader.InternalLoadModule(String path, LoadFlags loadFlags, F ileKind& kind, SourceUnit& sourceUnit, Assembly& assembly) at Ruby.Runtime.Loader.LoadModule(CodeContext context, Object self, String pa th, LoadFlags flags) I ran IronRubyTestHost.exe without problems but when I run ‘rake test’, I get the following: \*\* Invoke test (first\_time) \*\* Invoke happy (first\_time) \*\* Execute happy \*\* Invoke test\_libs (first\_time) \*\* Execute test\_libs “C:\NETPrj\IronRuby\build\debug\rbx.exe” “test\_dir.rb” rake aborted! undefined method `exitstatus' for nil:NilClass c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:730:in `sh’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:737:in `call' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:737:in `sh’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:816:in `sh' C:/NETPrj/IronRuby/rakefile:195:in `exec’ C:/NETPrj/IronRuby/rakefile:201:in `exec_net' C:/NETPrj/IronRuby/rakefile:556 C:/NETPrj/IronRuby/rakefile:556:in `each’ C:/NETPrj/IronRuby/rakefile:556 C:/NETPrj/IronRuby/rakefile:554:in `chdir' C:/NETPrj/IronRuby/rakefile:554 C:/NETPrj/IronRuby/rakefile:553:in `each’ C:/NETPrj/IronRuby/rakefile:553 c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in `call' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in `execute’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in `each' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:399:in `execute’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:369:in `invoke' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:362:in `synchronize’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:362:in `invoke' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:376:in `invoke\_prerequisit es’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1021:in `each' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1021:in `send’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1021:in `each' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:375:in `invoke\_prerequisit es’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:368:in `invoke' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:362:in `synchronize’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:362:in `invoke' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1935:in `run’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1935:in `each' c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/lib/rake.rb:1935:in `run’ c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.2/bin/rake:7 c:/ruby/bin/rake.bat:20:in `load’ c:/ruby/bin/rake.bat:20 Sorry for the long email…but can someone help? Thanks! nfe ---
**Author:** ![nfe](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f07891/32.png) [@nfe](https://www.ruby-forum.com/u/nfe)\ **Post date:** [November 27, 2007, 11:06pm UTC](https://www.ruby-forum.com/t/unable-to-load-system-windows-forms/121119/2 "2007-11-27T23:06:39Z")
Try using the strong name: C:\lang\IronRuby\Build\Release\>rbx IronRuby Pre-Alpha (1.0.0.0) on .NET 2.0.50727.1378 Copyright © Microsoft Corporation. All rights reserved. > > > require ‘System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’ > > > =\> true > > > > I got that info from C:\Windows\Assembly (if you don’t already have it memorized. ;)) Cory ---
**Author:** ![nfe](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f07891/32.png) [@nfe](https://www.ruby-forum.com/u/nfe)\ **Post date:** [November 28, 2007, 4:37am UTC](https://www.ruby-forum.com/t/unable-to-load-system-windows-forms/121119/3 "2007-11-28T04:37:56Z")
Cory F. wrote: > Try using the strong name: > > C:\lang\IronRuby\Build\Release\>rbx > IronRuby Pre-Alpha (1.0.0.0) on .NET 2.0.50727.1378 > Copyright © Microsoft Corporation. All rights reserved. > > > > > require ‘System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’ > > > > =\> true > > > > > > > > I got that info from C:\Windows\Assembly (if you don’t already have it > memorized. ;)) > > Cory Thanks Cory! That did the trick…now to memorize or resort to the good ole cut and paste when using the interactive console… ---
**Author:** ![nfe](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f07891/32.png) [@nfe](https://www.ruby-forum.com/u/nfe)\ **Post date:** [November 28, 2007, 4:42am UTC](https://www.ruby-forum.com/t/unable-to-load-system-windows-forms/121119/4 "2007-11-28T04:42:25Z")
In IronPython we’ll fall back to LoadWithPartialName which allows clr.AddReference(‘System.Windows.Forms’) to work. Maybe IronRuby should consider doing the same thing? * * * From: removed\_email\_address@domain.invalid [removed\_email\_address@domain.invalid] On Behalf Of N. F. [removed\_email\_address@domain.invalid] Sent: Tuesday, November 27, 2007 7:37 PM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] unable to load ‘System.Windows.Forms’ Cory F. wrote: > memorized. ;)) > > Cory ## Thanks Cory! That did the trick…now to memorize or resort to the good ole cut and paste when using the interactive console… Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). * * * Ironruby-core mailing list removed\_email\_address@domain.invalid [http://rubyforge.org/mailman/listinfo/ironruby-core](http://rubyforge.org/mailman/listinfo/ironruby-core)