Could not load file or assembly 'Newtonsoft.Json, Version=3.5.0.0

Question

I am working in c# 4.0 to read a signed request I am using the following code

FacebookApp fap = new FacebookApp();
fap.AppId = \"789485219211963\"; // App ID         


        

Answer 1

In package manager console Visual Studio 2013

PM> Install-Package Newtonsoft.Json

Then restart Visual Studio.