private async void OnCurrentSessionChanged(object sender, EventArgs e)
{
if (this.Ratings == null)
{
return;
}
// Änderungen des zuletzt selektierten Ratings speichern
if (this.CurrentRating != null)
{
if (_currentRatingHasChanges)
{
this.IsBusy = true;
if (this.CurrentRating.Id == 0)
{
var rating = this.CurrentRating;
var newRating = await _sessionService.AddRatingAsync(rating);
rating.Id = newRating.Id;
}
else
{
await _sessionService.UpdateRatingAsync(this.CurrentRating);
}
_currentRatingHasChanges = false;
this.IsBusy = false;
}
this.CurrentRating.PropertyChanged -= this.OnCurrentRatingPropertyChanged;
}
var session = this.SessionsView.CurrentItem as SessionDto;
if (session != null)
{
this.CurrentRating = null;
var rating = (from r in this.Ratings where r.SessionId.Equals(session.SessionBaseId) select r).FirstOrDefault();
this.CurrentRating = rating;
if (this.CurrentRating == null && session.Speaker1Id > 0)
{
var newRating = new Rating()
{
SessionId = session.SessionBaseId, SpeakerId = session.Speaker1Id
};
this.Ratings.Add(newRating);
this.CurrentRating = newRating;
}
if (this.CurrentRating != null)
{
this.CurrentRating.PropertyChanged += this.OnCurrentRatingPropertyChanged;
}
}
}