public AccomodationListViewModel(StudentHostelContext context) : base(context)
{
GetData();
GetStudentsList();
GetRoomsList();
if (AccomodationList == null)
{
CurrentAccomodation = null;
}
else if (AccomodationList.Count == 0)
{
CurrentAccomodation = null;
}
else
{
CurrentAccomodation = AccomodationList.First();
}
// Инициализация команд
AddCommand = new Command(Add, () => { return(!(IsAdding || IsEditing) && context != null); });
SaveCommand = new Command(SaveChanges, () => { return((IsAdding || IsEditing) && context != null); });
CancelCommand = new Command(DiscardChanges, () => { return((IsAdding || IsEditing) && context != null); });
EditCommand = new Command(Edit, () => { return(!(IsAdding || IsEditing) && isEditable && context != null); });
}
protected override void Add()
{
AccomodationList.Add(new AccomodationViewModel
{
AccomodationId = 0,
DateStart = DateTime.Now
});
CurrentAccomodation = AccomodationList.Last();
IsAdding = true;
}
protected override void DiscardChanges()
{
if (IsAdding)
{
AccomodationList.Remove(CurrentAccomodation);
IsAdding = false;
ErrorMessage = string.Empty;
}
else if (IsEditing)
{
IsEditing = false;
CurrentAccomodation.DateEnd = null;
ErrorMessage = string.Empty;
}
}
