ASPxClientGantt.TaskDeleting Event

Occurs before a user deletes a task.

Declaration

TaskDeleting: ASPxClientEvent<ASPxClientGanttTaskDeletingEventHandler<ASPxClientGantt>>

Event Data

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

Property	Description
cancel	Specifies whether to cancel the related action (for example, row edit, export). Inherited from ASPxClientCancelEventArgs.
key	Specifies the task key.
values	Specifies the task values.

Remarks

Use the TaskDeleting event to process task data before the task is deleted.

Run Demo

The following example illustrates how to cancel task deletion if the deleted task key is 5:

ASPX

<dx:ASPxGantt ID="Gantt" >
    <ClientSideEvents TaskDeleting="onGanttTaskDeleting" ... />
</dx:ASPxGantt>

JS

function onGanttTaskDeleting(s, e) {
    if (e.key == 5) {
        //...
        e.cancel = true;
    }
}

Related APIs:

• InsertTask(data)
• DeleteTask(key)
• TaskInserting

Concepts

• Gantt Elements: Task

• Manage Tasks