protected async override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
Utils.ShowHideProgressBar(this.progress, true);
DataContext = null;
SetModelPropertiesFromQS();
if (await _model.LoadDataAsync())
{
DataContext = _model;
this.EventLocations.ItemsSource = _model.Locations;
}
Utils.ShowHideProgressBar(this.progress, false);
}