如何使用HttpWebRequest获取方法w/ ContentType= " application/json "

This one is real simple, run this Silverlight4 example with the ContentType property commented out and you'll get back a response from from my service in xml. Now uncomment the property and run it and you'll get an ProtocolViolationException, what should happen is the service returns JSON formatted data.This one is real simple, run this Silverlight4