C#判断系统是32位还是64位的方法

本文实例讲述了C#判断系统是32位还是64位的方法。分享给大家供大家参考。具体如下：

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;
 }
}

这里需要引用System.Management，该方法在以Guest用户登录的情况下抛出异常：

或者用以下方法：

[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; 
}

这里需要引用System.Diagnostics

希望本文所述对大家的C#程序设计有所帮助。