protected override void OnBeforeInstall(IDictionary savedState)
    {
        base.OnBeforeInstall(savedState);

        bool isUserAccount = false;

        string name = GetContextoParametros("name");
        if (0 == name.Length) name = serviceInstaller.ServiceName;
        serviceInstaller.ServiceName = name;

        string display = GetContextoParametros("displayname");
        if (0 == display.Length) display = serviceInstaller.DisplayName;
        serviceInstaller.DisplayName = display;

        string acct = GetContextoParametros("account");

        switch (acct)
        {
            case "user":
                serviceProcessInstaller.Account =
                   System.ServiceProcess.ServiceAccount.User;
                isUserAccount = true;
                break;
            case "localservice":
                serviceProcessInstaller.Account =
                  System.ServiceProcess.ServiceAccount.LocalService;
                break;
            case "localsystem":
                serviceProcessInstaller.Account =
                  System.ServiceProcess.ServiceAccount.LocalSystem;
                break;
            case "networkservice":
                serviceProcessInstaller.Account =
                  System.ServiceProcess.ServiceAccount.NetworkService;
                break;
        }

        string username = GetContextoParametros("user");
        string password = GetContextoParametros("password");

        if (isUserAccount)
        {
            serviceProcessInstaller.Username = username;
            serviceProcessInstaller.Password = password;
        }
    }

    public override void Install(IDictionary stateServer)
    {
        RegistryKey system,
            //HKEY_LOCAL_MACHINEServicesCurrentControlSet
            currentControlSet,
            //...Services
            services,
            //...<Service Name>
            service,
            //...Parameters - this is where you can
            //put service-specific configuration
            config;

        base.Install(stateServer);

        system = Registry.LocalMachine.OpenSubKey("System");
        currentControlSet = system.OpenSubKey("CurrentControlSet");
        services = currentControlSet.OpenSubKey("Services");

        service =
          services.OpenSubKey(this.serviceInstaller.ServiceName, true);

        service.SetValue("Description",
                         this.serviceInstaller.Description);

        Console.WriteLine("ImagePath: " + service.GetValue("ImagePath"));
        string imagePath = (string)service.GetValue("ImagePath");
        imagePath += " -s" + this.serviceInstaller.ServiceName;
        service.SetValue("ImagePath", imagePath);
        config = service.CreateSubKey("Parameters");

        config.Close();
        service.Close();
        services.Close();
        currentControlSet.Close();
        system.Close();
    }
   public string GetContextoParametros(string key)
    {
        string sValue = "";
        try
        {
            sValue = this.Context.Parameters[key].ToString();
            if (sValue.IndexOf(@"") >= 0)
                sValue = sValue.Substring(sValue.LastIndexOf(@""), sValue.Length - sValue.LastIndexOf(@""));
        }
        catch
        {
            sValue = "";
        }
        return sValue;
    }