C＃中JSON-RPC客户端的示例代码

I need a simple JSON-RPC 1.0 client in C#, preferably using .NET 2.0 or later. I checked out JRock 0.9 They have several samples including Yahoo reader, but the samples demo JSON, not JSON-RPC. I understand I could implement RPC part using any of the available JSON parsers, like JRock or two from Microsoft. I would prefer a ready sample.I need a simple JSON-RPC 1.0 client in C#, pref