'Declaration Protected Overridable Sub OnBeforeHolidayRemoved( _ ByVal e As CancelableHolidayEventArgs _ )
protected virtual void OnBeforeHolidayRemoved( CancelableHolidayEventArgs e )
Raising an event invokes the event handler through a delegate.
The OnBeforeHolidayRemoved method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Holidays to Inheritors: When overriding OnBeforeHolidayRemoved in a derived class, be sure to call the base class's OnBeforeHolidayRemoved method so that registered delegates receive the event.
Imports Infragistics.Shared Imports Infragistics.Win Imports Infragistics.Win.UltraWinSchedule Imports System.Diagnostics Private Sub ultraCalendarInfo1_BeforeHolidayRemoved(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinSchedule.CancelableHolidayEventArgs) Handles ultraCalendarInfo1.BeforeHolidayRemoved '---------------------------------------------------------------------------------------------------- ' Description ' BeforeHolidayRemoved ' ' Fires before a new holiday is removed from the component's Holidays collection. ' If canceled, the Holiday is not removed, and the AfterHolidayRemoved event does not fire. ' '---------------------------------------------------------------------------------------------------- If (e.Holiday.NumberOfDays > 1) Then ' To prevent the removal of the Appointment, set the Cancel ' property to true e.Cancel = True ' Let the end user know what happened Dim info As String = String.Empty info += "You do not have sufficient permissions to remove multi-day holidays." + vbCrLf MessageBox.Show(info, "BeforeHolidayRemoved", MessageBoxButtons.OK, MessageBoxIcon.Error) End If End Sub
using System.Diagnostics; using Infragistics.Shared; using Infragistics.Win; using Infragistics.Win.UltraWinSchedule; private void ultraCalendarInfo1_BeforeHolidayRemoved(object sender, Infragistics.Win.UltraWinSchedule.CancelableHolidayEventArgs e) { //---------------------------------------------------------------------------------------------------- // Description // BeforeHolidayRemoved // // Fires before a new holiday is removed from the component's Holidays collection. // If canceled, the Holiday is not removed, and the AfterHolidayRemoved event does not fire. // //---------------------------------------------------------------------------------------------------- if ( e.Holiday.NumberOfDays > 1 ) { // To prevent the removal of the Appointment, set the Cancel // property to true e.Cancel = true; // Let the end user know what happened string info = string.Empty; info += "You do not have sufficient permissions to remove multi-day holidays." + "\n"; MessageBox.Show( info, "BeforeHolidayRemoved", MessageBoxButtons.OK, MessageBoxIcon.Error ); } }
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