using System;
using System.Runtime.InteropServices;
[StructLayout(LayoutKind.Sequential)]
class OSVersionInfo {
public int dwOSVersionInfoSize;
public int dwMajorVersion;
public int dwMinorVersion;
public int dwBuildNumber;
public int dwPlatformId;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
public String szCSDVersion;
}
class MainClass {
[DllImport("kernel32.dll")]
public static extern bool GetVersionEx([In, Out] OSVersionInfo osvi);
static void Main(string[] args) {
OSVersionInfo osvi = new OSVersionInfo();
osvi.dwOSVersionInfoSize = Marshal.SizeOf(osvi);
GetVersionEx(osvi);
Console.WriteLine("Class size: " + osvi.dwOSVersionInfoSize);
Console.WriteLine("Major Version: " + osvi.dwMajorVersion);
Console.WriteLine("Minor Version: " + osvi.dwMinorVersion);
Console.WriteLine("Build Number: " + osvi.dwBuildNumber);
Console.WriteLine("Platform Id: " + osvi.dwPlatformId);
Console.WriteLine("CSD Version: " + osvi.szCSDVersion);
Console.WriteLine("Platform: " + Environment.OSVersion.Platform);
Console.WriteLine("Version: " + Environment.OSVersion.Version);
}
}
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