ASPxClientListBox.BeginCallback Event

Occurs when a callback for server-side processing is initiated.

Declaration

BeginCallback: ASPxClientEvent<ASPxClientBeginCallbackEventHandler<ASPxClientListBox>>

Event Data

The BeginCallback event's data class is ASPxClientBeginCallbackEventArgs. The following properties provide information specific to this event:

Property	Description
command	Gets a command name that identifies which client action initiated a callback.

Remarks

The BeginCallback event, together with the ASPxClientListBox.EndCallback event, can be used to perform specific client-side actions (for example, to display and hide an explanatory picture), while a callback is being processed on the server side.