'Declaration Public Event AppointmentResizing As AppointmentResizingHandler
public event AppointmentResizingHandler AppointmentResizing
The event handler receives an argument of type AppointmentResizingEventArgs containing data related to this event. The following AppointmentResizingEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| Appointment | Returns the Appointment on which the resize operation is being performed. |
| Cancel (Inherited from System.ComponentModel.CancelEventArgs) | |
| InitialDateTime (Inherited from Infragistics.Win.UltraWinSchedule.CancelableAppointmentDragEventArgs) | Returns the DateTime over which the cursor was positioned when the operation was initiated. |
| NewDateTime (Inherited from Infragistics.Win.UltraWinSchedule.CancelableAppointmentDragEventArgs) | Returns the DateTime closest to the current cursor position. |
| Phase | Returns the phase of the resize operation that this event firing represents, i.e., whether it is beginning, in progress, or ending. |
| ResizeType | Returns whether the StartDateTime or EndDateTime of the associated appointment is being modified by the resize operation. |
| SelectionAction | Returns or sets how the contents of the SelectedAppointments collection is affected when the resize operation is initiated. |
The AppointmentsResizing event notifies a listener during all phases of an appointment resize operation. The Phase property identifies whether the resize operation has just been initiated, is continuing because the end user is moving the mouse while the logical left button is pressed, or is about to be committed because the end user released the mouse. The event can be canceled during any phase, in which case the resized appointment is returned to its pre-drag state. The SelectionAction property can be used to determine how the existing appointment selection is affected when the resize operation begins, i.e., whether the existing selection is cleared, preserved, or if only the appointment being resized is selected.
If this event is not canceled, the AppointmentResized event is fired at the end of the resize operation.
Imports System.Collections.Generic Imports Infragistics.Win Imports Infragistics.Win.UltraWinSchedule Imports System.Diagnostics AddHandler Me.dayView.AppointmentResizing, AddressOf OnAppointmentsResizing Private Sub OnAppointmentsResizing(ByVal sender As Object, ByVal e As AppointmentResizingEventArgs) Dim control As UltraDayView = sender If Not control Is Nothing Then ' Get the delta between the original drag point and the new one Dim span As TimeSpan = e.InitialDateTime.Subtract(e.NewDateTime) Dim delta As Int32 = Math.Abs(span.TotalMinutes) ' Access the change history from the Tag property Dim changeHistory As List(Of AppointmentChangeHistoryItem) = Nothing If e.Appointment.Tag Is Nothing Then e.Appointment.Tag = New List(Of AppointmentChangeHistoryItem) changeHistory = e.Appointment.Tag ' If the appointment's duration is being increased by more than one hour, ' add an entry to the change history If (e.Phase = AppointmentResizePhase.Ending AndAlso delta > 60) Then changeHistory.Add(New AppointmentChangeHistoryItem(DateTime.Now, e)) End If ' If the duration has been changed more than a certain number ' of times, cancel the event If e.Phase = AppointmentResizePhase.Beginning AndAlso changeHistory.Count > 5 Then e.Cancel = True MessageBox.Show("Access denied", "AppointmentsResizing", MessageBoxButtons.OK) End If ' Clear the selection when a new resize operation begins e.SelectionAction = AppointmentResizeSelectionAction.SelectOnlyThisAppointment End If End Sub Public Structure AppointmentChangeHistoryItem Public timeStamp As DateTime Public data As AppointmentResizingEventArgs Public Sub New(ByVal timeStamp As DateTime, ByVal data As AppointmentResizingEventArgs) Me.timeStamp = timeStamp Me.data = data End Sub End Structure
using System.Collections.Generic; using Infragistics.Win; using Infragistics.Win.UltraWinSchedule; using System.Diagnostics; this.dayView.AppointmentResizing += new AppointmentResizingHandler(OnAppointmentsResizing); private void OnAppointmentsResizing(object sender, AppointmentResizingEventArgs e) { UltraDayView control = sender as UltraDayView; if ( control != null ) { // Get the delta between the original drag point and the new one TimeSpan span = e.InitialDateTime.Subtract( e.NewDateTime ); int delta = (int)Math.Abs( span.TotalMinutes ); // Access the change history from the Tag property List<AppointmentChangeHistoryItem> changeHistory = null; if ( e.Appointment.Tag == null ) e.Appointment.Tag = new List<AppointmentChangeHistoryItem>(); changeHistory = e.Appointment.Tag as List<AppointmentChangeHistoryItem>; // If the appointment's duration is being increased by more than one hour, // add an entry to the change history if ( e.Phase == AppointmentResizePhase.Ending && delta > 60 ) changeHistory.Add( new AppointmentChangeHistoryItem(DateTime.Now, e) ); // If the duration has been changed more than a certain number // of times, cancel the event if ( e.Phase == AppointmentResizePhase.Beginning && changeHistory.Count > 5 ) { e.Cancel = true; MessageBox.Show( "Access denied", "AppointmentsResizing", MessageBoxButtons.OK ); } // Clear the selection when a new resize operation begins e.SelectionAction = AppointmentResizeSelectionAction.SelectOnlyThisAppointment; } } public struct AppointmentChangeHistoryItem { public DateTime timeStamp; public AppointmentResizingEventArgs data; public AppointmentChangeHistoryItem( DateTime timeStamp, AppointmentResizingEventArgs data ) { this.timeStamp = timeStamp; this.data = data; } }
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2