private static List<Alert> _alerts = new List<Alert>(); // List of the Alerts
    private TcpChannel _tcpChannel;

    protected override void OnStart(string[] args)
    {
        loadAlerts(); // This sets up the List (code not req'd)
        // Set up the remotelister so that other processes can access _alerts
        // Create the TcpChannel
        _tcpChannel = new TcpChannel(65000);
        ChannelServices.RegisterChannel(_tcpChannel, false);

        // Register the Proxy class for remoting.
        RemotingConfiguration.RegisterWellKnownServiceType(
          typeof(RemoteLister),
          "AlertList.soap",
          WellKnownObjectMode.Singleton);
    }

    [Serializable]
    public class RemoteLister : MarshalByRefObject
    {
        public List<Alert> TheList
        {
            get { return _alerts; }
            set { _alerts = value; }
        }

        public bool save()
        {
            EventLog.WriteEntry("AlertService", "Calling saveAlerts...");
            return saveAlerts();
        }
    }

private string _alertName; // Name of alert

    public string AlertName
    {
        get { return _alertName; }
        set { _alertName = value; }
    }

AlertService.RemoteLister remoteAlertList;

    protected void Page_Load(object sender, EventArgs e)
    {
        // This is where we create a local object that accesses the remote object in the service
        Type requiredType = typeof(AlertService.RemoteLister);
        // remoteAlertList is our reference to the List<Alert> in the always running service
        remoteAlertList = (AlertService.RemoteLister)Activator.GetObject(requiredType,
                "tcp://localhost:65000/AlertList.soap");
    }

private void fillFields()
    {
        AlertNameTextBox.Text = remoteAlertList.TheList[AlertDropDownList.SelectedIndex].AlertName;
    }

protected void AlertSaveButton_Click(object sender, EventArgs e)
    {
        remoteAlertList.TheList[AlertDropDownList.SelectedIndex].AlertName = AlertNameTextBox.Text;
    }

public class RemoteLister : MarshalByRefObject
{
    public Alert this[int index] {get {...} set {...}}
}

obj[index].Name = "abc";

var tmp = obj[index]; // tmp points to the deserialized disconnected Alert
tmp.Name = "abc"; // we update the local disconnected Alert

obj[index] = tmp;

public void setAlertName(int index, string name)
            {
                _alerts[index].AlertName = name;
            }

protected void AlertSaveButton_Click(object sender, EventArgs e)
{
    remoteAlertList.setAlertName(AlertDropDownList.SelectedIndex, AlertNameTextBox.Text);
}