c# 注册表操作

http://www.cnblogs.com/jinweida/archive/2008/06/27/1230919.html
 1/// <summary>
 2        /// 读取注册表值
 3        /// </summary>
 4        /// <param name="strName"></param>
 5        /// <returns></returns>
 6        public static string GetRegEditData(string strName)
 7        {
 8            try
 9            {
10                string registData; 
11                RegistryKey hkml = Registry.LocalMachine; 12                RegistryKey software = hkml.OpenSubKey("SOFTWARE",true); 
13                RegistryKey aimdir = software.OpenSubKey("username",true); 
14                registData = aimdir.GetValue(strName).ToString(); 
15                return MD5Decrypt(registData);
16            }
17            catch(Exception ex)
18            {    
19                Log.WriteDataBase(DateTime.Now,"3",FrmMain.userName,ex.Message,"主机名："+System.Net.Dns.GetHostName()+";IP地址:"+FrmMain.addressList[0]);
20                return "";
21            }
22