Hi, I bind a calendarInfo with a dataset and it works. This calendarInfo offers information to UltraMonthViewMulti for selecting activeday, to UltraWeekView, Ultra

UltraMonthViewSingle, UltraWeekView, UltraDayView and UltraTimelineView for showing the schedules of multiple owners.

In the Windows Form, user can choice one of the Views for getting information of schedules.

When user choices UltraTimelineView, all owners’ schedules are shown with default backcolor.

And when user choices other View, each owners’ schedules are shown with specific backcolor by owner.

What I say backcolor is following properties:

- DayAppearance.BackColor

- AlternateMonthDayAppearance.BackColor

- WorkingHourTimeSlotAppearance.BackColor

- WorkingHourTimeSlotAppearance.BorderColor

- NonWorkingHourTimeSlotAppearance.BackColor

- NonWorkingHourTimeSlotAppearance.BorderColor

For realizing this function, I user the following code:

for (var i = 0; i < ultraCalendarInfo1.VisibleOwners.Count; i++)
{
    if (i % 4 == 0)
        continue; // By Default Color

    var owner = ultraCalendarInfo1.VisibleOwners[i];
    if (isNotTimelineView)
    {
        var color = CalenderColors[i % 4 - 1];
        owner.DayAppearance.BackColor = color.Light;
        owner.AlternateMonthDayAppearance.BackColor = color.Dark;
        owner.WorkingHourTimeSlotAppearance.BackColor = color.Light;
        owner.WorkingHourTimeSlotAppearance.BorderColor = color.Border;
        owner.NonWorkingHourTimeSlotAppearance.BackColor = color.Dark;
        owner.NonWorkingHourTimeSlotAppearance.BorderColor = color.Border;
    }
    else
    {
        owner.DayAppearance.Reset();
        owner.AlternateMonthDayAppearance.Reset();
        owner.WorkingHourTimeSlotAppearance.Reset();
        owner.NonWorkingHourTimeSlotAppearance.Reset();
    }
}

This works correctly, but the problem is performance.

I tried this with 250 owners and their 800 appointments, and it needs around 1 sec in Debug Mode of Visual Studio 2017, when I change the selection of view control between UltraTimelineView and others.

I tried SuspendLayout(ResumeLayout) / BeginUpdate(EndUpdate) / Visible:false(Visible:true) for all View, but nothing better.(UltraCalendarInfo component doesn’t have these method)

Any help would be much appreciated.