public MainWindow()
{
InitializeComponent();
db = new Db4o();
LoadHausbesitzer();
hideAllOtherButtons();
}
public static int GetNextId(Db4o db)
{
if (Antrag.highestId != null)
{
Antrag.highestId++;
}
else
{
List <Antrag> antraege = db.LoadData <Antrag>();
int Id = antraege.OrderByDescending(x => x.Id).FirstOrDefault()?.Id ?? 0;
Antrag.highestId = ++Id;
}
return(Antrag.highestId.Value);
}
