Released as part of the shift towards asynchronous programming, the 4.5 Developer Pack was pivotal for introducing:
The is a comprehensive software package designed specifically for software engineers to build and test applications targeting the .NET Framework 4.5 environment. Unlike the standard runtime, which only allows applications to run , the Developer Pack provides the necessary tools and reference assemblies to create them. What is Included in the Developer Pack? .net framework 4.5 developer pack