在.net 4.5中，判断操作系统不用再写方法去判断了，有直接可以利用的属性了哦，如下所示：

Environment.Is64BitProcess 属性.NET Framework 4.5

确定当前进程是否为 64 位进程。

当然如果是用的.net 4.5以前的童鞋也不必担心，同样也可以用以下的方法来实现判断系统位数。

复制代码 代码如下:

private string Distinguish64or32System()

{

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 addressWidth;

}

catch (Exception ex)

{

return String.Empty;

}

}