C#操作注冊表學習

    今天偶然看見一篇有修改注冊表的文章，心中便想C＃是否可以修改注冊表，於是自己便從網上找了一些文章學習。
雖然學的很淺，但自己又進步了！

首先瞭解下C#操作注冊表的類
（1）.Registry類：此類主要封裝了七個公有的靜態域，而這些靜態域分別代表這視窗註冊表中的七個基本的主鍵，具體如下所示：

Registry.ClassesRoot     對應於HKEY_CLASSES_ROOT主鍵

Registry.CurrentUser     對應於HKEY_CURRENT_USER主鍵

Registry.LocalMachine    對應於 HKEY_LOCAL_MACHINE主鍵

Registry.User            對應於 HKEY_USER主鍵

Registry.CurrentConfig   對應於HEKY_CURRENT_CONFIG主鍵

Registry.DynDa           對應於HKEY_DYN_DATA主鍵

Registry.PerformanceData 對應於HKEY_PERFORMANCE_DATA主鍵      

（2）.RegistryKey類：此類中主要封裝了對視窗系統註冊表的基本操作。在程式設計中，首先通過Registry類找到註冊表中的基本主鍵，然後通過RegistryKey類，來找其下面的子鍵和處理具體的操作的。

代碼：       using Microsoft.Win32;

        /// <summary>
        ///得到注冊表中的值
        /// </summary>
        /// <returns></returns>
        private string GetRegistData( )
        {
            string registData;
            RegistryKey hkml = Registry.LocalMachine;
            RegistryKey RootFolder = Registry.LocalMachine;
            RegistryKey system = RootFolder.OpenSubKey("system",true);
            RegistryKey CurrentControlSet = system.OpenSubKey("CurrentControlSet",true);
            RegistryKey Services = CurrentControlSet.OpenSubKey("Services",true);
            RegistryKey Tcpip = Services.OpenSubKey("Tcpip",true);
            RegistryKey Parameters = Tcpip.OpenSubKey("Parameters",true);
            RegistryKey NetCardID = Parameters.OpenSubKey("Winsock",true);    
            registData = NetCardID.GetValue("HelperDllName", "null").ToString();
            return registData;
        }
        /// <summary>
        /// 創建注冊表值
        /// 本例為創建一個XX的子目錄，其創建一鍵為XXX，值為test
        /// </summary>
        private void CreateRegistData()
        {            
            RegistryKey hkml = Registry.LocalMachine;
            RegistryKey RootFolder = Registry.LocalMachine;
            RegistryKey system = RootFolder.OpenSubKey("system", true);
            RegistryKey CurrentControlSet = system.OpenSubKey("CurrentControlSet", true);
            RegistryKey Services = CurrentControlSet.OpenSubKey("Services", true);
            RegistryKey Tcpip = Services.OpenSubKey("Tcpip", true);
            RegistryKey Parameters = Tcpip.OpenSubKey("Parameters", true);
            RegistryKey NetCardID = Parameters.OpenSubKey("Winsock", true);
            RegistryKey xxx= NetCardID.CreateSubKey("xxx");
            //384為十進制，Dword為16進制，系統將自動進行轉換，最終注冊表存入的值為180,180為384的16進制
            xxx.SetValue("xxx",384,RegistryValueKind.DWord);    
        }

        /// <summary>
        /// 刪除指的鍵
        /// </summary>
        private void DeleteValueRegistData()
        {
            RegistryKey hkml = Registry.LocalMachine;
            RegistryKey RootFolder = Registry.LocalMachine;
            RegistryKey system = RootFolder.OpenSubKey("system", true);
            RegistryKey CurrentControlSet = system.OpenSubKey("CurrentControlSet", true);
            RegistryKey Services = CurrentControlSet.OpenSubKey("Services", true);
            RegistryKey Tcpip = Services.OpenSubKey("Tcpip", true);
            RegistryKey Parameters = Tcpip.OpenSubKey("Parameters", true);
            RegistryKey NetCardID = Parameters.OpenSubKey("Winsock", true);
            RegistryKey xxx = NetCardID.OpenSubKey("xxx", true);
            string[] SubValue;
            SubValue = xxx.GetValueNames();
            foreach (string sSubValue in SubValue)
            {
                if (sSubValue=="xxx")
                {
                    xxx.DeleteValue(sSubValue);
                }
            }
        }
        /// <summary>
        /// 刪除子目錄
        /// </summary>
        private void DeleteSubRegistData()
        {
            RegistryKey hkml = Registry.LocalMachine;
            RegistryKey RootFolder = Registry.LocalMachine;
            RegistryKey system = RootFolder.OpenSubKey("system", true);
            RegistryKey CurrentControlSet = system.OpenSubKey("CurrentControlSet", true);
            RegistryKey Services = CurrentControlSet.OpenSubKey("Services", true);
            RegistryKey Tcpip = Services.OpenSubKey("Tcpip", true);
            RegistryKey Parameters = Tcpip.OpenSubKey("Parameters", true);
            RegistryKey NetCardID = Parameters.OpenSubKey("Winsock", true);
            string[] SubValue;
            SubValue = NetCardID.GetSubKeyNames();
            foreach (string sSubValue in SubValue)
            {               
                if (sSubValue == "xxx")
                {                    
                    NetCardID.DeleteSubKey (sSubValue);
                }
            }
        }