With SilverLight 2.0 you can interact and handle events with the html elements on your page. Here is a simple example that places a select (drop down control) on a web page which will change the color of a ellipse on a SilverLight app. So lets start with the html
Now the XAML
Now build the app so we have intellisense for the controls. Ok first off lets get access to the drop down (select) on the web page. Then we can use AttachEvent to handle the onchange event.
Once the user selects a color we will change the color of the ellipse. Here is the complete code listing
Hope this helps