Hi Brian,

This works fine for 24 hour format. But when system culture is 24 hour format and we want to show 12 hour format on calendar along with AM/ PM indicator while scrolling slider over calendar view. I have modified this code to show 12 format, but only problem is that it is not showing AM/ PM.

  void IUIElementCreationFilter.AfterCreateChildElements(UIElement parent)
    {
        nsDayView.HourUIElement hourElement = parent as nsDayView.HourUIElement;
        if ( hourElement != null )
        {
            nsDayView.TimeSlotDescriptorUIElement descriptorElement =
                hourElement.GetAncestor( typeof(nsDayView.TimeSlotDescriptorUIElement) )
                as nsDayView.TimeSlotDescriptorUIElement;

            //  TODO: this could be cached for better performance
            List<nsDayView.HourUIElement> hours = new List<Infragistics.Win.UltraWinSchedule.DayView.HourUIElement>();
            foreach( UIElement element in descriptorElement.ChildElements )
            {
                nsDayView.HourUIElement h = element as nsDayView.HourUIElement;
                if ( h != null )
                    hours.Add(h); 
            }

            //  Get the number of slots in an hour
            int slotsPerHour = hours.Count;

            //  Get the index of this hour element
            int index = hours.IndexOf( hourElement );

            //  Get the number of minutes in a slot
            //  (this should be the same as the value of the control's TimeSlotInterval)
            int minutesPerSlot = 60 / slotsPerHour;

            //  Multiply the index by the number of minutes in a slot
            int minute = minutesPerSlot * index;

            //  Offset the time of the first slot by the number of minutes
            TimeSlot slot = descriptorElement.FirstTimeSlot;
            DateTime startTime = slot.StartTime;
            startTime = startTime.AddMinutes( minute );

            //  Set the new text
            hourElement.Text = startTime.ToString("hh:mm"); 
        }

Here, i don't want to use "hh:mm tt" format as it appends AM/ PM indicator to every time slot descriptor. The default calendar view shows AM/ PM to the 1st time slot of the calendar and I want exactly same behavior.

Thanks Brian... It worked perfectly (but ofcourse you knew that already :) )

One question though: In your code you made a comment that;

' TODO: this could be cached for better performance

What part of that code could be cached??? I assume by cached you mean I could extract something out to a Private Variable so that I didn't have to cast into it each time the code was hit?

I couldn't work out what could be optimised in the code example you showed.

You have to use a format of "HH:mm" to see the minutes.

This is revised code that accounts for the TimeSlotDescriptorLabelStyle setting you were using...note that this does not handle the other case, so I will leave it up to you to integrate the two solutions:

#region TimeSlotDecriptorCreationFilter
/// <summary>
/// Provides a way to add labels for DayView's TimeSlotUIElements
/// </summary>
public class TimeSlotDecriptorCreationFilter : IUIElementCreationFilter
{
    private string format = null;
    public TimeSlotDecriptorCreationFilter( string format )
    {
        this.format = format;
    }

    #region IUIElementCreationFilter interface implementation

    void IUIElementCreationFilter.AfterCreateChildElements(UIElement parent)
    {
        nsDayView.HourUIElement hourElement = parent as nsDayView.HourUIElement;
        if ( hourElement != null )
        {
            nsDayView.TimeSlotDescriptorUIElement descriptorElement =
                hourElement.GetAncestor( typeof(nsDayView.TimeSlotDescriptorUIElement) )
                as nsDayView.TimeSlotDescriptorUIElement;

            //  TODO: this could be cached for better performance
            List<nsDayView.HourUIElement> hours = new List<Infragistics.Win.UltraWinSchedule.DayView.HourUIElement>();
            foreach( UIElement element in descriptorElement.ChildElements )
            {
                nsDayView.HourUIElement h = element as nsDayView.HourUIElement;
                if ( h != null )
                    hours.Add(h);
            }

            //  Get the number of slots in an hour
            int slotsPerHour = hours.Count;

            //  Get the index of this hour element
            int index = hours.IndexOf( hourElement );

            //  Get the number of minutes in a slot
            //  (this should be the same as the value of the control's TimeSlotInterval)
            int minutesPerSlot = 60 / slotsPerHour;

            //  Multiply the index by the number of minutes in a slot
            int minute = minutesPerSlot * index;

            //  Offset the time of the first slot by the number of minutes
            TimeSlot slot = descriptorElement.FirstTimeSlot;
            DateTime startTime = slot.StartTime;
            startTime = startTime.AddMinutes( minute );

            //  Set the new text
            hourElement.Text = startTime.ToString(this.format);
        }

        nsDayView.TimeSlotDescriptorUIElement timeSlotDescriptorElement = parent as nsDayView.TimeSlotDescriptorUIElement;
        if ( timeSlotDescriptorElement != null )
        {
            nsDayView.MinuteUIElement minuteElement =
                timeSlotDescriptorElement.GetDescendant( typeof(nsDayView.MinuteUIElement) )
                as nsDayView.MinuteUIElement;

            //if ( minuteElement != null )
            //    minuteElement.Text = "00";
        }

    }

    bool IUIElementCreationFilter.BeforeCreateChildElements(UIElement parent)
    {
        return false;
    }

    #endregion IUIElementCreationFilter interface implementation

Any news brian?

No trick to it:

Me.dayViewAppointments.TimeSlotDescriptorLabelStyle = TimeSlotDescriptorLabelStyle.EveryTimeSlot

Cheers
Aaron