软件注册是商业软件必不可少的模块，在整个程序中启到举足轻重的作用。

系统启动时首先会检测程序是否注册，如果程序没有注册可以使用30次，试用次数完成后将弹出注册界面。程序每次登陆都会将程序使用次数写入到注册表中，程序注册是也会将注册码已加密的方式写入到注册表中。

   public static void RegMetod(bool isDownLoad)
        {            try
            {
                SoftReg softReg = new SoftReg();                //判断软件是否注册
                RegistryKey retkey = Registry.CurrentUser.OpenSubKey("SOFTWARE", true).CreateSubKey(Encrypt.EncryptDES("mySoftWare", Const.EncryptKey)).CreateSubKey(Encrypt.EncryptDES("Register.INI", Const.EncryptKey));                foreach (string strRNum in retkey.GetSubKeyNames())
                {                    if (Encrypt.DecryptDES(strRNum, Const.EncryptKey) == softReg.GetRNum())
                    {
                        run(isDownLoad, "正式版", "");                        return;
                    }
                }
                Int32 tLong;                try
                {
                    tLong = (Int32)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\" + Encrypt.EncryptDES("mySoftWare", Const.EncryptKey), "UseTimes", 0);
                }                catch
                {
                    Registry.SetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\" + Encrypt.EncryptDES("mySoftWare", Const.EncryptKey), "UseTimes", 0, RegistryValueKind.DWord);
                }
                tLong = (Int32)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\" + Encrypt.EncryptDES("mySoftWare", Const.EncryptKey), "UseTimes", 0);                if (tLong < 30)
                {                    int tTimes = tLong + 1;
                    Registry.SetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\" + Encrypt.EncryptDES("mySoftWare", Const.EncryptKey), "UseTimes", tTimes);                    int xint = 30 - tTimes;                    //试用版不提供更新服务
                    run(true, "试用版", xint.ToString());
                }                else
                {
                    DialogResult result = Comm.MessageBox.YesNo("试用次数已到!您是否需要注册?");                    if (result == DialogResult.Yes)
                    {
                        RegisterForm registerForm = new RegisterForm();
                        registerForm.ShowDialog();
                    }                    else
                    {
                        Application.Exit();
                    }
                }
            }            catch (Exception e)
            {
                Log.Error("程序注册出错!");                throw new Exception("程序注册出错:" + e.Message);
            }
        }

注册界面：

        #region * 注册        private void btnReg_Click(object sender, EventArgs e)
        {            if (string.IsNullOrEmpty(this.txtLicence.Text))
            {
                Client.Win.Comm.MessageBox.Info("注册码不能为空!");                return;
            }            try
            {                if (txtLicence.Text == softReg.GetRNum())
                {
                    Client.Win.Comm.MessageBox.Info("注册成功！重启软件后生效！");
                    RegistryKey retkey = Registry.CurrentUser.OpenSubKey("Software", true).CreateSubKey(Encrypt.EncryptDES("mySoftWare", Const.EncryptKey)).CreateSubKey(Encrypt.EncryptDES("Register.INI", Const.EncryptKey)).CreateSubKey(Encrypt.EncryptDES(txtLicence.Text, Const.EncryptKey));
                    retkey.SetValue(Encrypt.EncryptDES("UserName",Const.EncryptKey),Encrypt.EncryptDES( "Rsoft",Const.EncryptKey));                    this.Close();
                }                else
                {
                    Client.Win.Comm.MessageBox.Warn("注册码错误！");
                    txtLicence.SelectAll();
                }
            }            catch (Exception ex)
            {                throw new Exception(ex.Message);
            }
        }        #endregion

生成机器码（由MAC地址和硬盘券盘号截取前面20位）：

     ///<summary>
        /// 生成机器码        ///</summary>
        ///<returns></returns>
        public string GetMNum()
        {            string strNum = Computer.Instance().MacAddress + Computer.Instance().VolumeSerialNumber; // GetCpu() + GetDiskVolumeSerialNumber();
            string strMNum = string.Empty;            if (strNum.Length > 20)
            {
                strMNum = strNum.Substring(0, 20);    //截取前20位作为机器码            }            else
            {
                strMNum = strNum;
            }            return strMNum;
        }

生成注册码：

        ///<summary>
        /// 生成注册码        ///</summary>
        ///<returns></returns>
        public string GetRNum()
        {
            SetIntCode();            string strMNum = GetMNum();            for (int i = 1; i < charCode.Length; i++)   //存储机器码            {
                charCode[i] = Convert.ToChar(strMNum.Substring(i - 1, 1));
            }            for (int j = 1; j < intNumber.Length; j++)  //改变ASCII码值            {
                intNumber[j] = Convert.ToInt32(charCode[j]) + intCode[Convert.ToInt32(charCode[j])];
            }            string strAsciiName = "";   //注册码
            for (int k = 1; k < intNumber.Length; k++)  //生成注册码            {                if ((intNumber[k] >= 48 && intNumber[k] <= 57) || (intNumber[k] >= 65 && intNumber[k]                    <= 90) || (intNumber[k] >= 97 && intNumber[k] <= 122))  //判断如果在0-9、A-Z、a-z之间                {
                    strAsciiName += Convert.ToChar(intNumber[k]).ToString();
                }                else if (intNumber[k] > 122)  //判断如果大于z                {
                    strAsciiName += Convert.ToChar(intNumber[k] - 10).ToString();
                }                else
                {
                    strAsciiName += Convert.ToChar(intNumber[k] - 9).ToString();
                }
            }            return strAsciiName;
        }

获取电脑的基本信息：

 /// <summary>
    /// Computer Information    /// </summary>
    public class Computer
    {        public string CpuID;        public string MacAddress;        public string DiskID;        public string IpAddress;        public string LoginUserName;        public string ComputerName;        public string SystemType;        public string TotalPhysicalMemory; //单位：M
        public string VolumeSerialNumber;        private static Computer _instance;        public static Computer Instance()
        {            if (_instance == null)
                _instance = new Computer();            return _instance;
        }        protected Computer()
        {
            VolumeSerialNumber = GetDiskVolumeSerialNumber();
            CpuID = GetCpuID();
            MacAddress = GetMacAddress();
            DiskID = GetDiskID();
            IpAddress = GetIPAddress();
            LoginUserName = GetUserName();
            SystemType = GetSystemType();
            TotalPhysicalMemory = GetTotalPhysicalMemory();
            ComputerName = GetComputerName();
        }        ///<summary>
        /// 获取硬盘卷标号        ///</summary>
        ///<returns></returns>
        public string GetDiskVolumeSerialNumber()
        {            try
            {
                ManagementClass mc = new ManagementClass("win32_NetworkAdapterConfiguration");
                ManagementObject disk = new ManagementObject("win32_logicaldisk.deviceid=\"c:\"");
                disk.Get();                return disk.GetPropertyValue("VolumeSerialNumber").ToString();
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }        /// <summary>
        /// CPU序列号        /// </summary>
        /// <returns></returns>
        string GetCpuID()
        {            //try            //{            //    //获取CPU序列号代码            //    string cpuInfo = "";//cpu序列号            //    ManagementClass mc = new ManagementClass("Win32_Processor");            //    ManagementObjectCollection moc = mc.GetInstances();            //    foreach (ManagementObject mo in moc)            //    {            //        cpuInfo = mo.Properties["ProcessorId"].Value.ToString();            //    }            //    moc = null;            //    mc = null;            //    return cpuInfo;            //}            //catch            //{            //    return  "unknow";            //}            //finally            //{            //}
            return "";
        }        /// <summary>
        /// MAC地址        /// </summary>
        /// <returns></returns>
        string GetMacAddress()
        {            try
            {                //获取网卡Mac地址
                string mac = "";
                ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)
                {                    if ((bool)mo["IPEnabled"] == true)
                    {
                        mac = mo["MacAddress"].ToString();                        break;
                    }
                }
                moc = null;
                mc = null;                return mac.Replace(":", "");
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }        /// <summary>
        /// IP地址        /// </summary>
        /// <returns></returns>
        string GetIPAddress()
        {            try
            {                //获取IP地址
                string st = "";
                ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)
                {                    if ((bool)mo["IPEnabled"] == true)
                    {                        //st=mo["IpAddress"].ToString();                        System.Array ar;
                        ar = (System.Array)(mo.Properties["IpAddress"].Value);
                        st = ar.GetValue(0).ToString();                        break;
                    }
                }
                moc = null;
                mc = null;                return st;
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }        /// <summary>
        /// 硬盘序列号        /// </summary>
        /// <returns></returns>
        string GetDiskID()
        {            try
            {                //获取硬盘ID
                String HDid = "";
                ManagementClass mc = new ManagementClass("Win32_DiskDrive");
                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)
                {
                    HDid = (string)mo.Properties["Model"].Value;
                }
                moc = null;
                mc = null;                return HDid;
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }        /// <summary>
        /// 操作系统的登录用户名        /// </summary>
        /// <returns></returns>
        string GetUserName()
        {            try
            {                string st = "";
                ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)
                {
                    st = mo["UserName"].ToString();
                }
                moc = null;
                mc = null;                return st;
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }        /// <summary>
        /// PC类型        /// </summary>
        /// <returns></returns>
        string GetSystemType()
        {            try
            {                string st = "";
                ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)
                {
                    st = mo["SystemType"].ToString();
                }
                moc = null;
                mc = null;                return st;
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }        /// <summary>
        /// 物理内存        /// </summary>
        /// <returns></returns>
        string GetTotalPhysicalMemory()
        {            try
            {                string st = "";
                ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)
                {
                    st = mo["TotalPhysicalMemory"].ToString();
                }
                moc = null;
                mc = null;                return st;
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }        /// <summary>
        /// 计算机名称        /// </summary>
        /// <returns></returns>
        string GetComputerName()
        {            try
            {                return System.Environment.GetEnvironmentVariable("ComputerName");
            }            catch
            {                return "unknow";
            }            finally
            {
            }
        }

完成以上即可实现软件注册！

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