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<h1>Overview</h1>

<p>It is possible to run Groovy on .NET 2.0 using IKVM as a virtual machine. By using IKVM compiler, you can compile your Groovy jar to be a .NET assembly (a DLL file) with the following command:</p>

<table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>
ikvmc -target:library groovy-all-1.5.0.jar
</pre></td></tr></table>

<p>However, some warning will appear, but you can ignore them. After compilation you should have <strong>groovy-all-1.5.0.dll</strong> in the current directory.</p>

<h1>Using the Groovy .NET Assembly</h1>

<p>With the compiled DLL, you can use it as a normal .NET assembly. The following example shows how to add it as a reference for building a simple application. You need the <a href="http://www.icsharpcode.net/OpenSource/SD">SharpDevelop</a> IDE in this case.</p>

<ul>
	<li>Open SharpDevelop, create a new .NET console application.</li>
	<li>Add references, your groovy DLL, and all IKVM DLLs.</li>
	<li>Open your main class, type the following code (in C# for example)</li>
</ul>

namespace GroovyDotNet {
  class MainClass {
    public static void Main(string[] args) {
      groovy.ui.InteractiveShell.main(args);
    }
  }
}
</pre></td></tr></table>

<ul>
	<li>Run the program, and you'll also have an executable file as well (in ./Debug directory).</li>
</ul>

<p>the original post:
<a class="external-link" href="http://chanwit.blogspot.com/2007/04/groovy-running-fine-on-net.html" rel="nofollow">http://chanwit.blogspot.com/2007/04/groovy-running-fine-on-net.html</a></p>

<h1>Invoking .NET classes</h1>
<p>We can call .NET classes directly from Groovy scripts. Note that IKVM has the <strong>cli</strong> prefix for all .NET namespaces. If you want to invoke <strong>Console.WriteLine('hello world')</strong>, you have to type:</p>

<table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>
cli.System.Console.WriteLine('hello world')
</pre></td></tr></table>

<p>The great thing here is that Groovy can pick a correct .NET method. You can also try:</p>

<table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>
cli.System.Console.WriteLine('hello world {0}', 'from Groovy')
</pre></td></tr></table>

<p>in the interactive console (the binary in the attachment of this page).</p>

<h2>Encoding Issues</h2>

<p>On some machines, there will be a test encoding issue to stop Groovy compiling script files. This seems to be the use of different encoding names between Java and .NET. If you find this kind of error, try specifying &quot;-c&quot; when testing with groovy.ui.GroovyMain class.</p>

<h2>Further development as a Groovy module?</h2>

<p>Discuss <a class="confluence-link unresolved" data-content-title="Groovy.Net module discussion" data-linked-resource-default-alias="Groovy.Net module discussion" href="#">here</a>.</p>