This article of Malcolm Sheridan demonstrates how to use the element binding feature in Silverlight 3.
Silverlight 3 has some new binding features that makes binding data to the controls even easier. The one I am going to focus on today is the ElementName property. The ElementName property gets or sets the name of the element to use as the binding source object. By using this property you can now use one user interface element as the binding object for another. This can great reduce the amount of code you need to write.