#!/usr/bin/env ruby $VERBOSE = true $: << ".." << "../lib" # This sample demonstrates a lot of rubydotnet features # including: instantiating objects from .net classes, accessing # the features on the objects, implementing .net interfaces in ruby, # .net delegates that call ruby. It also shows how to include C# # directly in the ruby script require 'dotnet' # Lesson 1: Instantiating and using objects arrayList = System::Collections::ArrayList.new # The .net namespaces map to ruby modules # so the usual trick for avoiding the long fully # qualified names work fine include System::Collections arrayList2 = ArrayList.new 1000.times { |i| arrayList2.add(i*i) } puts "arrayList2[10] = #{arrayList2[10]}" # Lesson 2: Using C# (or VB.net or JScript) directly # within a ruby script. # cs_compile has vb_compile and js_compile cousins for # Visual Basic .net and JScript.net cs_compile <<-EOF using System; public delegate void MyDelegate(string arg); public class MyClass { public static string aProperty { get { return "propValue"; } } public static event MyDelegate myEvent; public static void fireMyEvent(string arg) { if (myEvent != null) myEvent(arg); } } EOF puts "MyClass.aProperty = #{MyClass.aProperty}" # Lesson 3: Using events and call backs MyClass.add_myEvent(proc { |s| puts "proc1 called with s=#{s}" }) MyClass.add_myEvent(proc { |s| puts "proc2 called with s=#{s}" }) MyClass.fireMyEvent("hello world") # Lesson 4: Implementing .net interfaces with a ruby object # and using cs_eval to evaluate a small C# fragment. Notice # the same can be achieved with vb_eval or js_eval for # VisualBasic.net and JScript.net class MyDisposableRubyClass implements System::IDisposable def Dispose puts "Dispose called" end end myDisposableInstance = MyDisposableRubyClass.new # cs_eval(script, *args) - script must return a value (e.g. null). # args are available as a System::Object[] array cs_eval("((IDisposable)args[0]).Dispose(); return null;", myDisposableInstance) # Copyright (C) 2003 Thomas Sondergaard # rubydotnet is free software; you can redistribute it and/or # modify it under the terms of the ruby license. |