EnsureDateTimeVisible(DateTime,Boolean) メソッド

指定した日付と時間を表す列をコントロールの表示可能な領域に移動します。最初の列に表示できます。

シンタックス

Visual Basic

'宣言
 
Public Overloads Function EnsureDateTimeVisible( _
   ByVal dateTime As Date, _
   ByVal firstColumn As Boolean _
) As Boolean

C#

public bool EnsureDateTimeVisible( 
   DateTime dateTime,
   bool firstColumn
)

パラメータ

dateTime

表示される日付と時刻を定義する DateTime 構造。

firstColumn

関連する列を最初の列として表示するかどうかを指定するブール値。

戻り値の型

操作の実行が成功したかどうかを示すブール値。

使用例

Visual Basic

Imports System.Collections.Generic
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinSchedule
Imports System.Diagnostics

    AddHandler Me.ultraTimeLineView1.DateNavigationButtonClicked, AddressOf Me.OnDateNavigationButtonClicked

    Private Sub OnDateNavigationButtonClicked(ByVal sender As Object, ByVal e As DateNavigationButtonClickedEventArgs)

        Dim control As UltraTimelineView = sender
        Dim timeInterval As TimeInterval = e.DateTimeInterval
        If Not timeInterval Is Nothing AndAlso _
            timeInterval.DateNavigationButtonActionResolved = TimelineViewDateNavigationButtonAction.None Then

            Dim tzi As TimeZoneInfo = timeInterval.TimeZone
            If Not tzi Is Nothing AndAlso Not TimeZoneInfo.CurrentTimeZone Is Nothing Then

                '  Get the StartDateTime from the DateRange, which will
                '  contain the local time for that TimeZone.
                Dim nextDate As DateTime = e.DateTimeRange.StartDateTime

                '  Convert the local time for that TimeZone into local time
                '  for the current time zone
                nextDate = New DateTime(nextDate.Ticks, DateTimeKind.Local)
                Dim utc As DateTime = nextDate.Add(tzi.UtcOffset)
                If (tzi.IsDaylightSavingTime(utc)) Then
                    utc = utc.Add(tzi.DaylightUtcOffset)

                    nextDate = TimeZoneInfo.CurrentTimeZone.ToLocalTime(utc, DateTimeKind.Utc)

                    '  Get the next/previous date depending on the navigation direction.
                    Dim forward As Boolean = IIf(e.NavigationDirection = DateNavigationDirection.Forward, True, False)
                    nextDate = timeInterval.GetNextDate(nextDate, forward)

                    '  Call EnsureDateTimeVisible to navigate to the date
                    control.EnsureDateTimeVisible(nextDate, forward = False)
                End If
            End If
        End If

    End Sub

C#

using System.Collections.Generic;
using Infragistics.Win;
using Infragistics.Win.UltraWinSchedule;
using System.Diagnostics;

    this.ultraTimeLineView1.DateNavigationButtonClicked += new DateNavigationButtonClickedHandler(this.OnDateNavigationButtonClicked);

    private void OnDateNavigationButtonClicked(object sender, DateNavigationButtonClickedEventArgs e)
    {
        UltraTimelineView control = sender as UltraTimelineView;
        TimeInterval timeInterval = e.DateTimeInterval as TimeInterval;
        if ( timeInterval != null &&
             timeInterval.DateNavigationButtonActionResolved == TimelineViewDateNavigationButtonAction.None )
        {
            TimeZoneInfo tzi = timeInterval.TimeZone;
            if ( tzi != null && TimeZoneInfo.CurrentTimeZone != null )
            {
                //  Get the StartDateTime from the DateRange, which will
                //  contain the local time for that TimeZone.
                DateTime next = e.DateTimeRange.StartDateTime;

                //  Convert the local time for that TimeZone into local time
                //  for the current time zone
                next = new DateTime( next.Ticks, DateTimeKind.Local );
                DateTime utc = next.Add( tzi.UtcOffset );
                if ( tzi.IsDaylightSavingTime(utc) )
                    utc = utc.Add( tzi.DaylightUtcOffset );

                next = TimeZoneInfo.CurrentTimeZone.ToLocalTime( utc, DateTimeKind.Utc );
                
                //  Get the next/previous date depending on the navigation direction.
                bool forward = e.NavigationDirection == DateNavigationDirection.Forward;
                next = timeInterval.GetNextDate( next, forward );

                //  Call EnsureDateTimeVisible to navigate to the date
                control.EnsureDateTimeVisible( next, forward == false );
            }

        }
    }