We recently released Measurement Studio 7.1, so if you upgrade, you'll get that version.
If you use the .NET Framework, C#, and Measurement Studio, you will not be able to work with the C++ classes from C# because C++ classes are not usable from C#. Furthermore, we did not make an effort to keep the APIs consistent between the .NET controls and the C++ controls. The differences between C++/MFC and C#/.NET Framework are so great that had we attempted to make the .NET control APIs similar to the C++ control APIs, the .NET API usability and feature set would have suffered a great deal. There is definitely a learning curve to move from C++ to C#, but I personally think that it is worth it unless you need features that only C++ offers.
To he
lp you learn C# and .NET, I recommend
Applied .NET Framework Programming, by Jeffrey Richter.
To help you learn the new Measurement Studio APIs, the Measurement Studio help has a set of concept topics that describe how to use the APIs. You, of course, can also use this forum as a resource for learning about the APIs.