SchedulerControl.AppointmentResizing Event

Occurs when an end-user begins modifying the appointment‘s interval, by dragging its border with the mouse.

Namespace: DevExpress.Xpf.Scheduler

Assembly: DevExpress.Xpf.Scheduler.v18.2.dll

Declaration

C#

public event AppointmentResizeEventHandler AppointmentResizing

VB.NET

Public Event AppointmentResizing As AppointmentResizeEventHandler

Event Data

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

Property	Description
Allow	Specifies whether the appointment can be resized.
EditedAppointment	Gets the appointment being edited in the resize event.
Handled	Gets or sets whether the resize operation is handled, and therefore no default processing is required.
HitInterval	Gets the time interval represented by the time cell to which the appointment’s side is moved.
HitResource	Gets the resource assigned to cells to which an appointment’s side is moved.
ResizedSide	Indicates which appointment side is being moved when the appointment is resized.
SourceAppointment	Gets the source appointment in the resize event.

Remarks

Important

You are viewing documentation for the legacy WPF Scheduler control. If you’re starting a new project, we strongly recommend that you use a new control declared in the DevExpress.Xpf.Scheduling namespace. If you decide to upgrade an existing project in order to switch to the updated scheduler control, see the Migration Guidelines document.

The event argument provides information on an appointment before and after resizing, the resource and time interval associated with time cells to which the appointment’s edge is moved, and also indicates which side of the appointment is moved.

Note

To cancel appointment resizing, handle the SchedulerControl.AppointmentResized event, and set the AppointmentResizeEventArgs.Allow to false and AppointmentResizeEventArgs.Handled to true, in the handler’s code.

The OptionsCustomization.AllowAppointmentResize value takes priority over the AppointmentResizing event. If it is set to AppointmentConflictsMode.Custom, then the SchedulerControl.AllowAppointmentResize occurs before the AppointmentResizing event. Dragging the appointment border with the mouse results in a series of AppointmentResizing events, followed by a single SchedulerControl.AppointmentResized event.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the AppointmentResizing event.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-implement-precise-drag-and-drop-and-resizing-of-appointments-in-day-view-work-week-t408165/CS/CustomHandlers/AppointmentsResizeHandler.cs#L16

public override void AttachToControl() {
    control.AppointmentResizing += AppointmentResizeHandler;
    control.AppointmentResized += AppointmentResizeHandler;

VB.NET

how-to-implement-precise-drag-and-drop-and-resizing-of-appointments-in-day-view-work-week-t408165/VB/CustomHandlers/AppointmentsResizeHandler.vb#L20

Public Overrides Sub AttachToControl()
    AddHandler control.AppointmentResizing, AddressOf AppointmentResizeHandler
    AddHandler control.AppointmentResized, AddressOf AppointmentResizeHandler