System.Collections.Concurrent missing classes

Question

I've got the final release Visual Studio 2013 working on an MVC4 project. .NET 4.5 is the target platform. When I reference the System assembly all I see is BlockingCollection<T> and ConcurentBag<T> in the System.Collections.Concurrent namespace. According to documentation there a bunch more classes that should be there. I'm looking for the ConcurrentDictionary<TKey, TValue> here in particular.

Full path to the assembly: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\System.dll

Update: When I try to reference mscorlib.dll I get the error A reference to 'mscorlib' could not be added. This component is already automatically referenced by the build system.

Answer 1

Ok, so this was really stupid mistakes I was making. The classes were there all along in mscorlib assembly. mscorlib was already referenced, as could be seen in the Object Browser, it just wasn't showing up in Solution Explorer so I didn't spot it right away. I also didn't complete the data type with <TKey, TValue>. So yeah, it's all there.