Hosting multiple services in separate AppDomains

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration.Install;
using System.ServiceProcess;
using System.IO;
using ServiceHost.Shared;
using System.Xml.Serialization;
using System.Reflection;

namespace ServiceOne
{
    [RunInstaller(true)]
    public partial class Installer : System.Configuration.Install.Installer
    {
        public Installer()
        {
            InitializeComponent();
        }


        protected override void OnAfterInstall(System.Collections.IDictionary savedState)
        {
            base.OnAfterInstall(savedState);

            // create and initialize the service config info
            ServiceConfigInfo configInfo = new ServiceConfigInfo();
            configInfo.ApplicationBase = Path.GetDirectoryName(this.Context.Parameters["assemblyPath"]);
            configInfo.ConfigFileName = "ServiceOne.dll.config";
            configInfo.TypeName = typeof(ServiceOne).FullName;
            configInfo.AssemblyName = Assembly.GetExecutingAssembly().FullName.Split(new char[] { ',' })[0];

            // construct the service config file path and create directory if neccessary
            string filePath = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
            filePath = Path.Combine(filePath, "ServiceHost");
            Directory.CreateDirectory(filePath);
            filePath = Path.Combine(filePath, "ServiceOne.config.xml");

            // write the service configuration for this service
            StreamWriter writer = new StreamWriter(filePath);
            using (writer)
            {
                XmlSerializer serializer = new XmlSerializer(typeof(ServiceConfigInfo));
                serializer.Serialize(writer, configInfo);
            }

            // restart the service if it is running
            ServiceController serviceController = new ServiceController("ServiceOne");
            if (serviceController.Status == ServiceControllerStatus.Running)
            {
                serviceController.Stop();
                serviceController.WaitForStatus(ServiceControllerStatus.Stopped, new TimeSpan(0, 0, 20));
                serviceController.Start();
            }
        }
    }
}