Can someone help me.
What’s the difference between the built in JSON.NET DataContractJsonSerializer and the Newtonsoft JSON serializer?
Is it correct that I can use one or the other with Web API and why would I choose one?
Answers:
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Method 1
You can find the comparison of the performance here

(source: newtonking.com)
Here is the feature comparison,
http://james.newtonking.com/projects/json/help/index.html?topic=html/JsonNetVsDotNetSerializers.htm
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0