In order to achieve the desired you would need to expose a DependencyProperty
of type int
in your UserControl code behind. Afterwards in the PropertyChanged method you will be able to set the MinorTickLength property of the WeekViewDefinition the following way:
if (e.NewValue != e.OldValue)
var viewDefinition = ((ScheduleViewUserControl)d).ScheduleView.ActiveViewDefinition as WeekViewDefinition;
viewDefinition.MinorTickLength = new FixedTickProvider(new DateTimeInterval((int)e.NewValue, 0, 0, 0, 0));
Hope this helps.
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