Hi,
set this property in the viewmmodel
private ObservableCollection<GanttHoliday> _CustomHolidays;
public ObservableCollection<GanttHoliday> CustomHolidays
{
get
{
return _CustomHolidays;
}
set
{
_CustomHolidays = value;
OnPropertyChanged();
}
}
chaneg the constructor with this
public ViewModel()
{
Activities = new ObservableCollection<Processi>();
//DATE SCHEDULE
CustomSchedule = new ObservableCollection<GanttScheduleRowInfo>
{
new GanttScheduleRowInfo { TimeUnit = TimeUnit.Weeks},
new GanttScheduleRowInfo { TimeUnit = TimeUnit.Days, PixelsPerUnit = 30 }
};
//NUMERIC SCHEDULE
//CustomSchedule = GetInfo();
GenerateDataSource();
CustomHolidays = new ObservableCollection<GanttHoliday>();
GanttHoliday h = new GanttHoliday();
h.Day = new DateTime(2021, 5, 17);
CustomHolidays.Add(h);
h = new GanttHoliday();
h.Day = new DateTime(2021, 5, 20);
CustomHolidays.Add(h);
h = new GanttHoliday();
h.Day = new DateTime(2021, 5, 31);
CustomHolidays.Add(h);
}
and in the xaml use this binding
Holidays="{Binding CustomHolidays}"
and you will receive the null exception.
Best regards
Gian Piero Truccolo
