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Cannot find JavaScriptSerializer in .Net 4.0

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These are the steps for using it in .NET 4.0

1. Create a new console application
2. Change the target to dot.net 4 instead of Client Profile
3. Add a reference to System.Web.Extensions (4.0)
4. Got access to JavaScriptSerializer in Program.cs now :-)

Source: Cannot Find Javascript Serializer in .NET 4.0

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