GetVersionEx
will set wProductType
to VER_NT_SERVER
for Windows Server 2003/2008/2008R2/2012, versus VER_NT_WORKSTATION
for Windows XP/7/8.
You already know how to get whether the OS is 32-bit or 64-bit, so with a bit of P/Invoke (GetVersionEx is here), you should be able to figure out the rest.
Alternatively, if you don't want to use P/Invoke, you could use WMI, and take a look at the Win32_OperatingSystem
class, which has the same information in the ProductType
property. I wouldn't bother doing it this way unless you really had to.
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