SelectedDateTimeRangeChanged Event

Fired after the date range returned by the SelectedDateTimeRange has changed.

Syntax

Visual Basic

'Declaration
 
Public Event SelectedDateTimeRangeChanged As SelectedDateTimeRangeChangedHandler

C#

public event SelectedDateTimeRangeChangedHandler SelectedDateTimeRangeChanged

Event Data

The event handler receives an argument of type SelectedDateTimeRangeChangedEventArgs containing data related to this event. The following SelectedDateTimeRangeChangedEventArgs properties provide information specific to this event.

Property	Description
IsChangingActiveOwner	Returns whether the change in date/time selection was initiated by a change in the ActiveOwner.
Range	Returns the new date/time range. Note that in the case where the selected date range is cleared, this property will return a null reference.

Example

The following code sample demonstrates how to use the date/time selection-related properties, methods, and events:

For an overview of how to handle events in Visual Basic or Visual C#, see Event Handlers in Visual Basic and Visual C#. For specific information and code examples illustrating how to consume events in your application, see Consuming Events in the .NET Framework Developer's Guide.

Visual Basic

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

    Public Sub SelectDateTimeRange(ByVal control As UltraTimelineView, ByVal range As DateTimeRange)

        '  Handle the SelectedDateTimeRangeChanging event
        RemoveHandler control.SelectedDateTimeRangeChanging, AddressOf Me.OnSelectedDateTimeRangeChanging
        AddHandler control.SelectedDateTimeRangeChanging, AddressOf Me.OnSelectedDateTimeRangeChanging

        '  If the caller did not specify a range, use the default,
        '  i.e., the working hour range of the current day.
        If range Is Nothing Then
            Dim calendarInfo As UltraCalendarInfo = control.CalendarInfo
            Dim dow As Infragistics.Win.UltraWinSchedule.DayOfWeek = calendarInfo.DaysOfWeek(DateTime.Today.DayOfWeek)
            Dim start As DateTime = DateTime.Today.Add(dow.WorkDayStartTime.TimeOfDay)
            Dim _end As DateTime = DateTime.Today.Add(dow.WorkDayEndTime.TimeOfDay).AddSeconds(-1)
            range = New DateTimeRange(start, _end)
        End If

        '  Select the range programmatically
        control.SelectDateTimeRange(range.StartDateTime, range.EndDateTime)
    End Sub

    Private Sub OnSelectedDateTimeRangeChanging(ByVal sender As Object, ByVal e As SelectedDateTimeRangeChangingEventArgs)

        '  If no listeners have canceled the SelectedDateTimeRangeChanging
        '  event, hook the SelectedDateTimeRangeChanged event so we get a
        '  notification after it has changed.
        If e.Cancel = False Then
            Dim control As UltraTimelineView = sender
            AddHandler control.SelectedDateTimeRangeChanged, AddressOf Me.OnSelectedDateTimeRangeChanged
        End If
    End Sub

    Private Sub OnSelectedDateTimeRangeChanged(ByVal sender As Object, ByVal e As SelectedDateTimeRangeChangedEventArgs)

        '  Format the selected date/time range and set the text
        '  of the label control that is used to display it.
        '  Adjust the end time if the PrimaryInterval is a TimeInterval,
        '  so that instead of '9AM - 9:59AM', the user sees '9AM - 10AM'.
        Dim control As UltraTimelineView = sender
        Dim adjustEndTime As Boolean = (control.PrimaryInterval.GetType() Is GetType(TimeInterval))
        Me.lblSelectedRange.Text = DateTimeRange.Format(e.Range.StartDateTime, e.Range.EndDateTime, DateTimeRange.Separator, adjustEndTime)

        '  Detach the event handler
        RemoveHandler control.SelectedDateTimeRangeChanged, AddressOf Me.OnSelectedDateTimeRangeChanged
    End Sub

C#

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

    public void SelectDateTimeRange( UltraTimelineView control, DateTimeRange range )
    {
        //  Handle the SelectedDateTimeRangeChanging event
        control.SelectedDateTimeRangeChanging -= new SelectedDateTimeRangeChangingHandler(this.OnSelectedDateTimeRangeChanging);
        control.SelectedDateTimeRangeChanging += new SelectedDateTimeRangeChangingHandler(this.OnSelectedDateTimeRangeChanging);

        //  If the caller did not specify a range, use the default,
        //  i.e., the working hour range of the current day.
        if ( range == null )
        {
            UltraCalendarInfo calendarInfo = control.CalendarInfo;
            Infragistics.Win.UltraWinSchedule.DayOfWeek dow = calendarInfo.DaysOfWeek[DateTime.Today.DayOfWeek];
            DateTime start = DateTime.Today.Add( dow.WorkDayStartTime.TimeOfDay );
            DateTime end = DateTime.Today.Add( dow.WorkDayEndTime.TimeOfDay ).AddSeconds( -1 );
            range = new DateTimeRange( start, end );
        }

        //  Select the range programmatically
        control.SelectDateTimeRange( range.StartDateTime, range.EndDateTime );
    }

    private void OnSelectedDateTimeRangeChanging(object sender, SelectedDateTimeRangeChangingEventArgs e)
    {
        //  If no listeners have canceled the SelectedDateTimeRangeChanging
        //  event, hook the SelectedDateTimeRangeChanged event so we get a
        //  notification after it has changed.
        if ( e.Cancel == false )
        {
            UltraTimelineView control = sender as UltraTimelineView;
            control.SelectedDateTimeRangeChanged += new SelectedDateTimeRangeChangedHandler(this.OnSelectedDateTimeRangeChanged);
        }
    }

    private void OnSelectedDateTimeRangeChanged(object sender, SelectedDateTimeRangeChangedEventArgs e)
    {
        //  Format the selected date/time range and set the text
        //  of the label control that is used to display it.
        //  Adjust the end time if the PrimaryInterval is a TimeInterval,
        //  so that instead of '9AM - 9:59AM', the user sees '9AM - 10AM'.
        UltraTimelineView control = sender as UltraTimelineView;
        bool adjustEndTime = control.PrimaryInterval is TimeInterval;
        this.lblSelectedRange.Text = DateTimeRange.Format( e.Range.StartDateTime, e.Range.EndDateTime, DateTimeRange.Separator, adjustEndTime );

        //  Detach the event handler
        control.SelectedDateTimeRangeChanged -= new SelectedDateTimeRangeChangedHandler(this.OnSelectedDateTimeRangeChanged);
    }

Requirements

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