NotificationsController.CustomProcessNotifications Event

Occurs before the notification window is shown.

Namespace: DevExpress.ExpressApp.Notifications

Assembly: DevExpress.ExpressApp.Notifications.v23.2.dll

NuGet Package: DevExpress.ExpressApp.Notifications

Declaration

C#

public event EventHandler<NotificationItemsEventArgs> CustomProcessNotifications

VB.NET

Public Event CustomProcessNotifications As EventHandler(Of NotificationItemsEventArgs)

Event Data

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

Property	Description
Handled	Gets or sets a value that indicates whether the event handler has completely handled the event or whether the system should continue its own processing. Inherited from HandledEventArgs.
NotificationItems	Gets the list of INotificationItem objects to be processed.

Remarks

Handle the CustomProcessNotifications event to apply custom processing to the notification list received from the Notifications Service. If you do not need to use the default logic in this event, set the Handled property to true and call the NotificationsController.RefreshNotifications method to display the notification list after your custom logic is performed as shown below.

C#

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Notifications;
using DevExpress.Persistent.Base.General;
//...
public class MyController : WindowController {
    protected override void OnActivated() {
        //...
        controller.CustomProcessNotifications += Controller_CustomProcessNotifications;
    }
    private void Controller_CustomProcessNotifications(object sender, DevExpress.Persistent.Base.General.NotificationItemsEventArgs e) {
        foreach(INotificationItem item in e.NotificationItems) {
            //...
        }
        e.Handled = true;
        ((NotificationsController)sender).RefreshNotifications();
    }
}

VB.NET

Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.Notifications
Imports DevExpress.Persistent.Base.General
'...
Public Class MyController
    Inherits WindowController
    Protected Overrides Sub OnActivated()
        '...
        AddHandler controller.CustomProcessNotifications, AddressOf Controller_CustomProcessNotifications
    End Sub
    Private Sub Controller_CustomProcessNotifications(ByVal sender As Object, ByVal e As DevExpress.Persistent.Base.General.NotificationItemsEventArgs)
        For Each item As INotificationItem In e.NotificationItems
            '...
        Next item
        e.Handled = True
        DirectCast(sender, NotificationsController).RefreshNotifications()
    End Sub
End Class