C# 讀取註冊表Wow6432Node位置出現null的問題

男娘i 2021-10-14 17:41 226阅读 0赞

參考了[https://cloud.tencent.com/developer/ask/172223][https_cloud.tencent.com_developer_ask_172223]

64位WIN7系統 Client端訪問能獲取到註冊表Wow6432Node位置

64位WIN7系統 WebService端訪問,獲取註冊表Wow6432Node位置為Null

registryKey2= Registry.LocalMachine;
    registryKey2.OpenSubKey("SOFTWARE")
    registryKey2.OpenSubKey("Wow6432Node")

解決方案: 判斷是64位,還是32位系統,分別獲取

// 根據系統位數,獲取註冊表
    RegistryView winView = RegistryView.Registry64;
     if (win == "32")
    {
         winView = RegistryView.Registry32;
    }                
    registryKey2 = RegistryKey.OpenBaseKey( Microsoft.Win32.RegistryHive.LocalMachine, winView);
    registryKey2.OpenSubKey("SOFTWARE");
    //64位系統時,WebService也能獲取到Wow6432Node的位置
    registryKey2.OpenSubKey("Wow6432Node");

//獲取系統是32位還是64位  
    private ushort GetOSAddressWidth()
            {
                ushort result;
                try
                {
                    SelectQuery query = new SelectQuery("select AddressWidth from Win32_Processor");
                    ManagementObjectSearcher managementObjectSearcher = new ManagementObjectSearcher(query);
                    ManagementObjectCollection managementObjectCollection = managementObjectSearcher.Get();
                    using (ManagementObjectCollection.ManagementObjectEnumerator enumerator = managementObjectCollection.GetEnumerator())
                    {
                        while (enumerator.MoveNext())
                        {
                            ManagementObject managementObject = (ManagementObject)enumerator.Current;
                            foreach (PropertyData current in managementObject.Properties)
                            {
                                if (current.Name.Equals("AddressWidth"))
                                {
                                    result = Convert.ToUInt16(current.Value);
                                    return result;
                                }
                            }
                        }
                    }
                    throw new Exception("Didn't get expected query result from WMI.");
                }
                catch (Exception ex)
                {
                    throw new Exception("Error occurs in WMI query.", ex.InnerException);
                }
                return result;
            }

[https_cloud.tencent.com_developer_ask_172223]: https://cloud.tencent.com/developer/ask/172223