Summary

This article explains how to receive radio Online/Offline status updates using the TRBOnet API for versions 6.3+ and earlier builds.

6.3 and Newer

Use the TRBOnet API to load device objects and receive status events.

Refer to the API example: "How to: Load objects (radios, beacons, map objects, etc.) and receive events from Server."

Online/Offline status is provided through the same event stream. To check state, use the Device class property:

Device.IsActive

Prior to 6.3

The same functionality is provided via device state change events.

Example (C#): Receiving Radio State Updates

client.DeviceStateChanged += new EventHandler<Objects.Event_args.DeviceStateChangedEventArgs>(client_DeviceStateChanged);

void client_DeviceStateChanged(object sender, Objects.Event_args.DeviceStateChangedEventArgs e)
{
    Device device = m_devices.Find(d => d.ID == e.DeviceId);
    if (device == null) return;

    device.BeginUpdate();
    try
    {
        device.DeviceState = e.State;
        device.ActiveMasterId = e.ActiveMasterId;
    }
    finally
    {
        device.EndUpdate();
    }
}