title: Monotuch : RadioGroup selected event
body: <p>How can i handle choised radio in radio Group??  </p>
  
  <pre><code>var root = new RootElement ("Meals") {
      new Section ("Dinner"){
              new RootElement ("Dessert", new RadioGroup ("dessert", 2)) {
                  new Section () {
                      new RadioElement ("Ice Cream", "dessert"),
                      new RadioElement ("Milkshake", "dessert"),
                      new RadioElement ("Chocolate Cake", "dessert")
                  }
              }
          }
      }
  </code></pre>