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(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;
     }
}