Unable to find System.Net.Http in web site project
<p>I am working with a web site project within Visual Studio 2015. I usually work with web applications so this type of project is new to me.</p>

<p>This application consist of ASP.NET pages (aspx and .cs code behind files). I wanted to add some code to one of the code behind files that would make use of the HttpClient library, however I cannot seem to add a reference to System.Net.Http. It is not present in the references. I do see that the project is targeting .NET 4.0. Could that be the issue?</p>

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