async Task ExecuteLoadPeriodCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
Periods.Clear();
var periods = await DataStoreP.GetPeriodsAsync(true);
foreach (var period in periods)
{
Periods.Add(period);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
public PeriodsViewModel()
{
Title = "Periods";
Periods = new ObservableCollection <Period>();
LoadPeriodsCommand = new Command(async() => await ExecuteLoadPeriodCommand());
MessagingCenter.Subscribe <NewPeriodPage, Period>(this, "AddPeriod", async(obj, period) =>
{
var _period = period as Period;
Periods.Add(_period);
await DataStoreP.AddPeriodAsync(_period);
});
}