aspnet-js-aspxclientuploadcontrol-46356ac1.md
Fires when the mouse leaves a drop zone or an external drop zone element while dragging a file.
DropZoneLeave: ASPxClientEvent<ASPxClientUploadControlDropZoneLeaveEventHandler<ASPxClientUploadControl>>
The DropZoneLeave event's data class is ASPxClientUploadControlDropZoneLeaveEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| dropZone | Gets a drop zone object related to the processed event. |
When the UploadAdvancedModeSettings.EnableDragAndDrop property is set to true, ASPxUploadControl allows end-users to add files to upload lists by dragging them to a control.
Use the DropZoneLeave event to perform custom actions when the mouse leaves a drop zone or an external drop zone element (specified by the UploadAdvancedModeSettings.ExternalDropZoneID property) while dragging a file. To respond to entering a drop zone, handle the ASPxClientUploadControl.DropZoneEnter event.
To learn more about the drag and drop functionality of the upload control, see the Drag and Drop topic.
See Also