ASPxTreeList.NodeDeleting Event

Enables you to prevent a node from being deleted.

Namespace: DevExpress.Web.ASPxTreeList

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

Declaration

C#

public event ASPxDataDeletingEventHandler NodeDeleting

VB.NET

Public Event NodeDeleting As ASPxDataDeletingEventHandler

Event Data

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

Property	Description
Cancel	Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.
Keys	Gets a dictionary of field name/value pairs that represent the primary key of the row to delete.
Values	Gets a dictionary of the non-key field name/value pairs for the row to delete.

Remarks

The NodeDeleting event occurs when an end-user has clicked the Delete command button, or the ASPxTreeList.DeleteNode method has been called. To cancel the delete operation, set the event parameter’s Cancel property to true.

After a node has been deleted, the ASPxTreeList.NodeDeleted event is raised.

To learn more, see Adding and Deleting Nodes.