/// <summary>
/// Initialize Earthquake Data when the app is loaded
/// </summary>
private void InitializeEarthquakeData()
{
var earthquakeData = EarthquakeServiceHelper.GetEarthuakeData(_hoursBefore);
EarthquakeDataCollection = new ObservableCollection <EarthquakeDataModel>();
PopulateEarthquakeData(earthquakeData, false);
Title = "Earthquake Activity since " + EarthquakeServiceHelper.StartTime.ToLocalTime();
SetTimer(_updateFrequencyInMinutes);
}
/// <summary>
/// Call the service helper to update the earthquake data
/// </summary>
private void UpdateEarthquakeData(object sender, EventArgs e)
{
if (EarthquakeDataCollection.Count > 0)
{
//Update start time to be 1 second after the last earthquake
var startTime = EarthquakeDataCollection[0].DateTime.ToUniversalTime();
startTime = startTime.AddSeconds(1);
var earthquakeData =
EarthquakeServiceHelper.UpdateEarthquakeData(startTime);
PopulateEarthquakeData(earthquakeData, true);
}
}