If you’re doing anything web services that return JSON here are some useful tools.
Json.NET is a popular high-performance JSON framework for .NET.
Need to build a .NET class for an existing JSON response? Then try one of these class generators.
JSON2CSharp is an online tool that generates c# classes from JSON.
JSON C# Class Generator is an application that generates C# classes from a sample JSON text, so you can use strongly typed programming with JSON. 8/14/2021 Update: CodePlex Archives will be shut down after July 1st, 2021. The project has been forked to GitHub https://github.com/JsonCSharpClassGenerator/JsonCSharpClassGenerator/