Appointment allignment after drag and drop

[johannb]

Hi,

 

In my View using the RadScheduleView control The drag and drop of appointments aligns next to each other even though the appoints do not fall in the same time span/slot.

Example:

Appointment 1 06:00 - 06:30

Appointment 2 06:30 - 07:00​

Now drag Appointment 2 to start at 05:30 and then again drag Appointment 1 to start at 05:00. You will see that the appointments appear next to each other although they do not occur in the same time slot. The expectation is that it should occur one after the other. They should only appear next to each other if the second appointment starts during the first appointment

See attached files for result. Also note that I could reconstruct this on the Telerik Controls Demo site: http://demos.telerik.com/silverlight/#ScheduleView/FirstLook

 

 

[Kalin]

Hi Johann,

We managed to reproduce the explained behavior. However we will need some more time in order to further investigate - I will get back to with more information as soon as possible.

Thanks for understanding.

Regards,
Kalin
Telerik

[Kalin]

Hi Johann,

The observed behavior is caused by the exact Start/End times of the appointments. Actually while dragging you are changing the seconds of those times as well. So this can end up in such scenario where the End of an appointment is taking couple of seconds more than the displayed time and going a little bit inside of the slot of the next appointment. However you can easily workaround that behavior by either always removing the seconds and the milliseconds of the dropped appointment using custom ScheduleView DragDropBehavior or by implementing custom SnapBehavior that snaps by single minute. For the SnapBehavior you can use the approach explained in the following article (just change minutes from 5 to 1) and you should be able to achieve the desired behavior:
http://docs.telerik.com/devtools/wpf/controls/radscheduleview/features/appointments/snapappointments#customizing-the-snapbehavior

Hope this helps.

Regards,
Kalin
Telerik

[Johann Bester]

Hi Kalin,

Thank you for the work around. The snap behavior does the trick. I only wanted to snap to 1 minute(s) so I refactored the behavior you supplied in the link. See below for my implementation.

 

 

    public class RadScheduleViewMinuteSnapBehaviour : SnapBehavior
    {
        #region Methods

        public override DateTime SnapEnd(SnapData snapData, DateTime snappedTime)
        {
            return StripSeconds(snappedTime);
        }

        public override DateTime SnapStart(SnapData snapData, DateTime snappedTime)
        {
            return StripSeconds(snappedTime);
        }

        public DateTime StripSeconds(DateTime snappedTime)
        {
            long secondsRemainderInTicks = snappedTime.Ticks % TimeSpan.FromMinutes(1).Ticks;

            return snappedTime.AddTicks(-secondsRemainderInTicks);
        }

        #endregion
    }

[Kalin]

Hello Johann,

I'm glad you have managed to achieve the desired. If you have any other questions or concerns, please let us know.

Regards,
Kalin
Telerik