Phase プロパティ (AppointmentResizingEventArgs)

このイベントの発生を表すサイズ変更操作の段階を決定します。つまり、サイズ変更操作が開始、実行、または終了されているかどうかを返します。

シンタックス

Visual Basic

'宣言
 
Public ReadOnly Property Phase As AppointmentResizePhase

C#

public AppointmentResizePhase Phase {get;}

解説

「Beginning」の戻り値は、関連付けられた操作のイベントが初めて発生していることを示します。「Moving」値は、操作が現在実行中であることを示し、前回のイベントが発生した後でユーザーが別の day または TimeSlot にカーソルを移動したことを示します。

使用例

Visual Basic

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

C#

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;
        }
    }