System.Net.Http: missing from namespace? (using .net 4.5)

NuGet > Microsoft.AspNet.WebApi.Client package

HttpClient lives in the System.Net.Http namespace.

You'll need to add:

using System.Net.Http;

And make sure you are referencing System.Net.Http.dll in .NET 4.5.

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The code posted doesn't appear to do anything with webClient. Is there something wrong with the code that is actually compiling using HttpWebRequest?

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Update

To open the Add Reference dialog right-click on your project in Solution Explorer and select Add Reference.... It should look something like: