注册表操作类

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Win32;//操作注册表的命名空间

namespace WinXPReg
{ 

　 public class RegCtrl
    {
        private static RegistryKey rootkey;
        //构造根键为RootKey的注册表操作类，缺省打开Current_User主键 
        public RegCtrl(string RootKey)
        {
            switch (RootKey.ToUpper())
            {
                case "CLASSES_ROOT":
                    rootkey = Registry.ClassesRoot;
                    break;
                case "CURRENT_USER":
                    rootkey = Registry.CurrentUser;
                    break;
                case "LOCAL_MACHINE":
                    rootkey = Registry.LocalMachine;
                    break;
                case "USERS":
                    rootkey = Registry.Users;
                    break;
                case "CURRENT_CONFIG":
                    rootkey = Registry.CurrentConfig;
                    break;
                case "DYN_DATA":
                    rootkey = Registry.DynData;
                    break;
                case "PERFORMANCE_DATA":
                    rootkey = Registry.PerformanceData;
                    break;
                default:
                    rootkey = Registry.CurrentUser;
                    break;
            }
        }

        // 读取路径为keypath，键名为keyname的注册表键值，缺省返回def 

        public string GetRegVal(string keypath, string keyname, string def)
        {
            try
            {
                RegistryKey key = rootkey.OpenSubKey(keypath);
                return key.GetValue(keyname, (object)def).ToString();
            }
            catch
            {
                return def;
            }
        }

        /// /// 设置路径为keypath，键名为keyname的注册表键值为keyval /// /// /// /// 
        public bool SetRegVal(string keypath, string keyname, string keyval)
        {
            try
            {
                RegistryKey key = rootkey.OpenSubKey(keypath, true);
                key.SetValue(keyname, (object)keyval);
                return true;
            }
            catch
            {
                return false;
            }
        }
        //创建路径为keypath的键 
        public RegistryKey CreateRegKey(string keypath)
        {
            try
            {
                return rootkey.CreateSubKey(keypath);
            }
            catch
            {
                return null;
            }
        }
        //删除路径为keypath的子项
        public bool DelRegSubKey(string keypath)
        {
            try {
                rootkey.DeleteSubKey(keypath); return true; 
            }
            catch 
            { 
                return false;
            }
        }

        // 删除路径为keypath的子项及其附属子项 
        public bool DelRegSubKeyTree(string keypath)
        {
            try
            {
                rootkey.DeleteSubKeyTree(keypath);
                return true;
            }
            catch
            {
                return false;
            }
        }
        //删除路径为keypath下键名为keyname的键值
        public bool DelRegKeyVal(string keypath, string keyname)
        {
            try
            {
                RegistryKey key = rootkey.OpenSubKey(keypath, true);
                key.DeleteValue(keyname);
                return true;
            }
            catch
            {
                return false;
            }
        }
    }

}