JSON - safely add a variable

How do I safely add a variable to JSON data with C#? For instance I might have 开发者_如何学Python[{"data": "data"}, {"data": "data"}] or I might have {"data": "data"}. How do I add a new variable "newdata": "newdata" to the structure?

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If you have the availability of the .Net 3.5SP1 framework, have a look at the JSONReaderWriterFactory class. It makes a XmlDictionaryReader/Writer for use with JSON.

You can use a reader/writer combination to read what's there, write what was there and add your own entries.

Hope this helps,