在c# restful web服务中删除xml名称空间返回字符串

I am having restful API which is written in C# using dot net framework 4.5..Currently its working alright... i'm returning a result after a JSON conversion.. I'm expecting a pure JSON result... which i'm not getting currently.. I'm expecting simple solution to omit the string XMLNS at the root element where i return the JSON... Result i'am getting: I am having restful API which is written in C#