The windows version information : Native Windows Function « Windows « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Windows
3. Native Windows Function

// Code from 
// A Programmer's Introduction to C# 2.0, Third Edition
// copyright 2000 Eric Gunnerson

using System;
using System.Runtime.InteropServices;

unsafe struct OSVERSIONINFO
{
     public uint dwOSVersionInfoSize;  
     public uint dwMajorVersion;  
     public uint dwMinorVersion;  
     public uint dwBuildNumber;
     public uint dwPlatformId; 
     public fixed char szCSDVersion[128];
}

class Program{
     [DllImport("Kernel32.dll", CharSet = CharSet.Unicode)]
     static extern bool GetVersionEx(ref OSVERSIONINFO lpVersionInfo);

     unsafe static void Main(string[] args)
     {
          OSVERSIONINFO versionInfo = new OSVERSIONINFO();
          versionInfo.dwOSVersionInfoSize = (uint)sizeof(OSVERSIONINFO);
          bool res = GetVersionEx(ref versionInfo);
          Console.WriteLine(Marshal.PtrToStringUni(new IntPtr(versionInfo.szCSDVersion)));
     }
}

S