Hello Xu,

The Storage is used to preserve temporarily the modified values of the appointment properties. In this way when the user confirms the EditAppointmentDialog, these values are copied to the appointment properties. In case the user cancels the editing, no change in the appointment is needed.

Kind regards,
Yana
the Telerik team

Thanks for your reply.

So this Storage method is required for customized properties, right? 

Thanks

Hi Kun,

Actually this is valid for all the appointment properties, not only the custom ones. The recommended approach is to use the Storage when creating custom properties.

Greetings,
Yana
the Telerik team