Hello Nadia Sangiovanni,
Thank you for writing.
event of the Appointments
collection is fired for each change which concerns appointments. The NotifyCollectionChangedEventArgs contain the type of the action that is applied to the Appointments collection. When one resizes or moves an appointment, this action is ItemChanged
You can also handle the AppointmentMouseDown
events in order to execute custom logic on the different actions that one may perform to an appointment.
I hope this helps. Do not hesitate to contact us, if you have other questions.
the Telerik team
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