判断操作系统是32位还是64位

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原创最新推荐文章于 2026-02-28 14:25:40 发布 4.3k 阅读 AI 写同款· GEO 优化 ›

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public enum Platform
    {
      X86,
      X64,
      Unknown
    }
 
    internal const ushort PROCESSOR_ARCHITECTURE_INTEL = 0;
    internal const ushort PROCESSOR_ARCHITECTURE_IA64 = 6;
    internal const ushort PROCESSOR_ARCHITECTURE_AMD64 = 9;
    internal const ushort PROCESSOR_ARCHITECTURE_UNKNOWN = 0xFFFF;
 
    [StructLayout(LayoutKind.Sequential)]
    internal struct SYSTEM_INFO
    {
      public ushort wProcessorArchitecture;
      public ushort wReserved;
      public uint dwPageSize;
      public IntPtr lpMinimumApplicationAddress;
      public IntPtr lpMaximumApplicationAddress;
      public UIntPtr dwActiveProcessorMask;
      public uint dwNumberOfProcessors;
      public uint dwProcessorType;
      public uint dwAllocationGranularity;
      public ushort wProcessorLevel;
      public ushort wProcessorRevision;
    };
 
    [DllImport("kernel32.dll")]
    internal static extern void GetNativeSystemInfo(ref SYSTEM_INFO lpSystemInfo);
 
    [DllImport("kernel32.dll")]
    internal static extern void GetSystemInfo(ref SYSTEM_INFO lpSystemInfo);
 
    public static Platform GetPlatform()
    {
      SYSTEM_INFO sysInfo = new SYSTEM_INFO();
 
      if(System.Environment.OSVersion.Version.Major > 5 ||
    (System.Environment.OSVersion.Version.Major == 5 && System.Environment.OSVersion.Version.Minor >= 1))
      {
         GetNativeSystemInfo(ref sysInfo);
      }
      else
      {
         GetSystemInfo(ref sysInfo);
      }
 
      switch(sysInfo.wProcessorArchitecture)
      {
    case PROCESSOR_ARCHITECTURE_IA64:
    case PROCESSOR_ARCHITECTURE_AMD64:
      return Platform.X64;
 
    case PROCESSOR_ARCHITECTURE_INTEL:
      return Platform.X86;
 
    default:
      return Platform.Unknown;
      }
    }