Deep Copy / Clone Objects in Silverlight with C#

The following code will add an extension method to Silverlight 3 based C# code to perform a deep copy of a custom object.  This templated method uses the MemoryStream serialization/deserialization technique, but will not work with UIElement members or derivatives.

public static class ExtensionMethods
{
       public static T DeepCopy<T>(this T oSource)
       {
              T oClone;

              DataContractSerializer dcs = new DataContractSerializer(typeof(T));

              using (MemoryStream ms = new MemoryStream())
              {
                     dcs.WriteObject(ms, oSource);
                     ms.Position = 0;
                     oClone = (T)dcs.ReadObject(ms);
              }

              return oClone;
       }
}