R – WPF App hosting/executing Ruby code via IronRuby

dynamic-language-runtimeironrubywpf

Hey folks, hoping you can help me get started with IronRuby. I have several Ruby scripts that I want to execute from my WPF Application (due to the use of several RMagick methods I can't get natively) and I can't find any good info on what references I need in the project.

I've installed IronRuby and tried adding Microsoft.Scripting and .Core but the app complains that I have no Sub Main method – can IronRuby be used in a non-console app?

Thanks,
Becky

Best Answer

Of course it can be used in a non-console app! that's what it all about :)

You need to add references to IronRuby.dll, IronRuby.Libraries.dll, Microsoft.Scripting.dll and Microsoft.Scripting.Core.dll.

Then you have multiple ways to execute IronRuby code or files like IronRuby.GetEngine().Execute("puts 'hello world'") or IronRuby.GetEngine().ExecuteFile("iron_ruby_file.rb").

Look at the next resources for more info about how to execute IronRuby code from C# code:

http://ironshay.com/post/make-your-application-extendable-using-the-dlr.aspx
http://www.youtube.com/watch?v=P7DyIU3wzdY
http://www.ironruby.net - good resource in general but doesn't have lots of information for what you need currently.

Related Solutions

R – Going Ruby: Straight to IronRuby

I would use pure ruby (Matz Ruby Interpreter (MRI)) to start off. My understanding is that iron ruby is not quite ready yet.

If you are looking for a good book my current favorite (over pickaxe) is http://www.amazon.com/gp/product/0596516177 by matz and flanagan, the book is very concise well written paragraphs and they provide great examples (in 1.8.* and 1.9)

Enjoy! :D

C# – Setting WPF image source in code

After having the same problem as you and doing some reading, I discovered the solution - Pack URIs.

I did the following in code:

Image finalImage = new Image();
finalImage.Width = 80;
...
BitmapImage logo = new BitmapImage();
logo.BeginInit();
logo.UriSource = new Uri("pack://application:,,,/AssemblyName;component/Resources/logo.png");
logo.EndInit();
...
finalImage.Source = logo;

Or shorter, by using another BitmapImage constructor:

finalImage.Source = new BitmapImage(
    new Uri("pack://application:,,,/AssemblyName;component/Resources/logo.png"));

The URI is broken out into parts:

Authority: application:///
Path: The name of a resource file that is compiled into a referenced assembly. The path must conform to the following format: AssemblyShortName[;Version][;PublicKey];component/Path
- AssemblyShortName: the short name for the referenced assembly.
- ;Version [optional]: the version of the referenced assembly that contains the resource file. This is used when two or more referenced assemblies with the same short name are loaded.
- ;PublicKey [optional]: the public key that was used to sign the referenced assembly. This is used when two or more referenced assemblies with the same short name are loaded.
- ;component: specifies that the assembly being referred to is referenced from the local assembly.
- /Path: the name of the resource file, including its path, relative to the root of the referenced assembly's project folder.

The three slashes after application: have to be replaced with commas:

Note: The authority component of a pack URI is an embedded URI that points to a package and must conform to RFC 2396. Additionally, the "/" character must be replaced with the "," character, and reserved characters such as "%" and "?" must be escaped. See the OPC for details.

And of course, make sure you set the build action on your image to Resource.

Best Answer

Related Solutions

R – Going Ruby: Straight to IronRuby

C# – Setting WPF image source in code

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