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ASPxScheduler.BeforeExecuteCallbackCommand Event

Fires before a callback command is executed.

Namespace: DevExpress.Web.ASPxScheduler

Assembly: DevExpress.Web.ASPxScheduler.v18.2.dll


public event SchedulerCallbackCommandEventHandler BeforeExecuteCallbackCommand
Public Event BeforeExecuteCallbackCommand As SchedulerCallbackCommandEventHandler

Event Data

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

Property Description
Command Gets or sets the object, representing the callback command.
CommandId Gets the command identifier, specifying a command to be executed.


The BeforeExecuteCallbackCommand event alerts that a callback is about to be executed.The issued command and its parameters are identified by the event's arguments.


A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=E2924.

protected void ASPxScheduler1_BeforeExecuteCallbackCommand(object sender, DevExpress.Web.ASPxScheduler.SchedulerCallbackCommandEventArgs e) {
    if (e.CommandId == SchedulerCallbackCommandId.AppointmentSave) {
        e.Command = new CustomAppointmentSaveCallbackCommand((ASPxScheduler)sender);

Online Examples

See Also