public static extern int RtlGetVersion(ref RtlOSVersionInfoEx lpVersionInformation);
private string GetOsVersionString()
{
var name = "unknown";
var v = new RtlOSVersionInfoEx
{
dwOSVersionInfoSize = (uint)Marshal.SizeOf(typeof(RtlOSVersionInfoEx))
};
RtlGetVersion(ref v);
var isWorkstation = v.wProductType == VER_NT_WORKSTATION;
if (v.dwMajorVersion == 3)
{
name = "Windows NT 3.51";
}
else if (v.dwMajorVersion == 4)
{
if (v.dwPlatformId == (uint)PlatformID.Win32Windows)
{
if (v.dwMinorVersion == 0)
{
name = "Windows 95";
}
else if (v.dwMinorVersion == 10)
{
name = "Windows 98";
}
else if (v.dwMinorVersion == 90)
{
name = "Windows ME";
}
}
else if (v.dwPlatformId == (uint)PlatformID.Win32NT)
{
name = "Windows NT 4.0";
}
}
else if (v.dwMajorVersion == 5)
{
if (v.dwMinorVersion == 0)
{
name = "Windows 2000";
}
else if (v.dwMinorVersion == 1)
{
name = "Windows XP";
}
else if (v.dwMinorVersion == 2)
{
name = "Windows .NET Server";
}
}
else if (v.dwMajorVersion == 6)
{
if (v.dwMinorVersion == 0)
{
name = isWorkstation ? "Windows Vista" : "Windows 2008";
}
else if (v.dwMinorVersion == 1)
{
name = isWorkstation ? "Windows 7" : "Windows 2008 R2";
}
else if (v.dwMinorVersion == 2)
{
name = isWorkstation ? "Windows 8" : "Windows 2012";
}
else if (v.dwMinorVersion == 3)
{
name = isWorkstation ? "Windows 8.1" : "Windows 2012 R2";
}
}
else if (v.dwMajorVersion == 10)
{
name = isWorkstation ? "Windows 10" : "Windows 2016";
}
var os = default(string);
if (string.IsNullOrEmpty(v.szCSDVersion))
{
os = string.Format("{0} (Build {1})", name, v.dwBuildNumber);
}
else
{
os = string.Format("{0} (Build {1}, {2})", name, v.dwBuildNumber, v.szCSDVersion);
}
#if DEBUG
System.Diagnostics.Debug.WriteLine(string.Format("OS String: {0}", os));
#endif
return(os);
}
