C#判断系统是32位还是64位的方法

public static int GetOSBit(){ try {  string addressWidth = String.Empty;  ConnectionOptions mConnOption = new ConnectionOptions();  ManagementScope mMs = new ManagementScope(@"//localhost", mConnOption);  ObjectQuery mQuery = new ObjectQuery("select AddressWidth from Win32_Processor");  ManagementObjectSearcher mSearcher = new ManagementObjectSearcher(mMs, mQuery);  ManagementObjectCollection mObjectCollection = mSearcher.Get();  foreach (ManagementObject mObject in mObjectCollection)  {   addressWidth = mObject["AddressWidth"].ToString();  }  return Int32.Parse(addressWidth); } catch (Exception ex) {  return 32; }}

[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool IsWow64Process([In] IntPtr hProcess, [Out] out bool lpSystemInfo); private static bool Is64Bit() {bool retVal; IsWow64Process( Process.GetCurrentProcess().Handle, out retVal); return retVal; }