. Does net 4 have a built-in JSON serializer / deserializer- Does . NET 4 have a built-in JSON serializer/deserializer?

problem ：

Does .NET 4 come with any class that serializes/deserializes JSON data?.NET 4 Whether any serialization is attached / Deserialization JSON The class of data ？

• I know there are 3rd-party libraries, such as JSON.NET , but I am looking for something built right into .NET. I know there is a third-party library , such as JSON.NET , But I'm looking for built-in .NET Things in .

• I found Data Contracts on MSDN, but it is for WCF, not for Winforms or WPF. I am here MSDN I found Data contracts , But it applies to WCF, Not applicable to Winforms or WPF.

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Solution ：

Reference resources ： https://stackoom.com/en/question/DkCV