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Editorial Team
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Asked: 2026-06-15T21:36:10+00:00

In this tutorial: http://www.asp.net/web-api/videos/getting-started/custom-validation Jon uses dynamic error = new JsonObject(); with using System.Json;

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In this tutorial: http://www.asp.net/web-api/videos/getting-started/custom-validation Jon uses

dynamic error = new JsonObject();

with

using System.Json;

I guess it’s the JsonObject here: http://msdn.microsoft.com/en-us/library/system.json.jsonobject(v=vs.110).aspx located in:

  • Namespace: System.Json
  • Assembly: System.Runtime.Serialization (in System.Runtime.Serialization.dll)

I’ve added System.Runtime.Serialization a reference but still cannot find System.Json.

Am I reading the Microsoft docs wrong? (I’m using .NET 4.5)

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1 Answer

  1. Editorial Team

    Try this: 

    PM> Install-Package System.Json -Version 4.0.20126.16343

    Per: http://nuget.org/packages/System.Json

    It worked!

    If you have questions on how to add enter nuget code, please follow the link below:
    http://docs.nuget.org/docs/start-here/using-the-package-manager-console

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