public TimeLineDeadlineEventInfo(Range <long> timeRange, int index, GanttDeadlineTask task)
: base(timeRange, index, index)
{
this.task = task;
}
public TimeRulerOverdueTickInfo(DateTime deadline, GanttDeadlineTask task)
{
this.timeRange = new Range <long>(deadline.Ticks);
this.task = task;
}