public void Close()
{
lock (this.deviceMap)
{
this.stopped = true;
var keysToRemove = new List <string>();
foreach (KeyValuePair <string, AnnounceTimer> entry in this.deviceMap)
{
AnnounceTimer timer = this.deviceMap[entry.Key];
timer.Stop();
timer.Close();
keysToRemove.Add(entry.Key);
}
foreach (var key in keysToRemove)
{
this.deviceMap.Remove(key);
}
}
}