获取操作系统版本

 

[ DllImport( "kernel32" )]
  private static extern bool GetVersionEx( [In, Out] OSVersionInfo osvi );
  public static int GetOpSysVer()
  {
   //  MajorVersion         MinorVersion       PlatformId
   //      4                    0                  1          Windows95
   //      4                    0                  2          WindowsNT4.0
   //      4                   10                             Windows98
   //      4                   90                             WindowsMe
   //      3                   51                             WindowsNT3.51
   //      5                    0                             Windows2000
   //      5                    1                             WindowsXP
   //      5                    2                             Windows Server 2003 family
   
   OSVersionInfo osvi = new OSVersionInfo();
   osvi.OSVersionInfoSize = Marshal.SizeOf( osvi );
   GetVersionEx( osvi );
   String str_opn =String.Format("{0}.{1}",osvi.MajorVersion,osvi.MinorVersion);
   switch(str_opn)
   {
    case "3.51":
     return 1;//"Windows NT 3.51";
    case "4.10":
     return 2;//"Windows 98";
    case "4.90":
     return 3;//"Windows Me";
    case "5.0":
     return 4;//"Windwos 2000";
    case "5.1":
     return 5;//"Windwos XP";
    case "5.2":
     return 6;//"Windows Server 2003 family";
    default:
     return 0;//"This windows version is not distinguish!";
   }
  }