It's a problem with the way ViewState is configured on the machine. Have a look at this: http://www.codinghorror.com/blog/archives/000132.html

It's designed for a managed platform. That doesn't mean you can't write unmanaged code. You can still write your assembler and use pointers, but that isn't the aim of the .net platform.
As far as...

C# is the microsoft's version of Java and C++ mix. It's designed for a managed platform. It's more stable, better structured but slower. I think there is managed C++ nowdays, but i've never used it.