Gets the concatenated string representation of the platform identifier, version, and service pack that are currently installed on the operating system.
Assembly: mscorlib (in mscorlib.dll)
By default, the value returned by is the same as the value returned by the ToString method. However, an implementation of the .NET Framework for a different platform might return a more appropriate string for that platform.
See Operating System Version on the Windows Dev Center for a list of Windows operating system versions and their corresponding version numbers.