SchedulerControl.RangeControlAutoAdjusting Event

Occurs before the RangeControl has been automatically adjusted when the scheduler active view or start date is changed.

Namespace: DevExpress.XtraScheduler

Assembly: DevExpress.XtraScheduler.v24.1.dll

NuGet Package: DevExpress.Win.Scheduler

Declaration

C#

public event RangeControlAdjustEventHandler RangeControlAutoAdjusting

VB.NET

Public Event RangeControlAutoAdjusting As RangeControlAdjustEventHandler

Event Data

The RangeControlAutoAdjusting event's data class is RangeControlAdjustEventArgs. The following properties provide information specific to this event:

Property	Description
RangeMaximum	Gets or sets the end bound of the range that will be available in the RangeControl after it is automatically adjusted.
RangeMinimum	Gets or sets the start bound of the range that will be available in the RangeControl after it is automatically adjusted.
Scales	Provides access to the collection of scales that will be visible in the RangeControl after it is automatically adjusted.

Remarks

Handle the RangeControlAutoAdjusting event to customize auto-adjust settings to be applied to the RangeControl after the scheduler view is changed or the scheduler start date is switched to a date that is beyond the RangeControl’s available time range.

Note

The RangeControlAutoAdjusting event is fired only if the SchedulerOptionsRangeControl.AutoAdjustMode is set to true.

Use the event arguments to customize the RangeControl scales (RangeControlAdjustEventArgs.Scales) and total range boundaries (RangeControlAdjustEventArgs.RangeMinimum, RangeControlAdjustEventArgs.RangeMaximum) to be applied when adjusting the RangeControl. To review the default auto-adjust settings, see the SchedulerOptionsRangeControl.AutoAdjustMode property description.

Example

This example demonstrates how to customize the auto-adjusting settings before they are applied to the RangeControl when an end-user switches the scheduler to the Work-Week or Month view.

1. Set the SchedulerOptionsRangeControl.AutoAdjustMode option to true.

2. Handle the SchedulerControl.RangeControlAutoAdjusting event. In this event handler, specify the RangeControl scales and range to be set when the Work-Week or Month view becomes active in the following way:

   • Work-Week

     By default, if the AutoAdjustMode option is enabled and an end-user switches the scheduler view to Work-Week, the RangeControl’s collection of scales (the RangeControlAdjustEventArgs.Scales property) includes all default scales (Year, Quarter, Month, Week, Day, Hour, 15 Minutes), and the Week and Day scales are visible.

     Leave this collection unchanged, but customize TimeScale.DisplayFormat and TimeScale.Width of the Day scale. To apply the specified format, disable the ScaleBasedRangeControlClientOptions.AutoFormatScaleCaptions option.

   • Month

     By default, if the AutoAdjustMode option is enabled and an end-user switches the scheduler view to Month, the RangeControl’s collection of scales (the RangeControlAdjustEventArgs.Scales property) includes all default scales (Year, Quarter, Month, Week, Day, Hour, 15 Minutes), and the Month and Week scales are visible.

     Clear the RangeControlAdjustEventArgs.Scales collection and specify new scales to be displayed in the RangeControl for the scheduler Month view. For example, add the TimeScaleMonth scale with the specified TimeScale.DisplayFormat and implement your own custom scale with a two-week interval and scale headers showing week numbers by inheriting it from the TimeScaleFixedInterval class. To apply the specified formats for scale headers, disable the ScaleBasedRangeControlClientOptions.AutoFormatScaleCaptions option.

     Set the RangeControlAdjustEventArgs.RangeMinimum and RangeControlAdjustEventArgs.RangeMaximum properties so that RangeControl’s range will be the whole year including the month that is visible in the scheduler.

Form1.cs

using System;
using System.Windows.Forms;
using DevExpress.XtraScheduler;
using DevExpress.XtraScheduler.Native;

namespace WindowsFormsApplication1 {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private void schedulerControl1_RangeControlAutoAdjusting(object sender,
                                                                RangeControlAdjustEventArgs e) {
            schedulerControl.OptionsRangeControl.AutoFormatScaleCaptions = true;
            SchedulerViewType activeViewType = schedulerControl.ActiveViewType;

            if (activeViewType == SchedulerViewType.WorkWeek) {
                schedulerControl.OptionsRangeControl.AutoFormatScaleCaptions = false;
                e.Scales[4].DisplayFormat = "dddd";
                e.Scales[4].Width = 70;
            }

            if (activeViewType == SchedulerViewType.Month) {
                schedulerControl.OptionsRangeControl.AutoFormatScaleCaptions = false;

                e.Scales.Clear();

                TimeScaleMonth monthScale = new TimeScaleMonth();
                monthScale.DisplayFormat = "MMMM yyyy";
                e.Scales.Add(monthScale);

                TwoWeekTimeScale twoWeekTimeScale = new TwoWeekTimeScale();
                twoWeekTimeScale.Width = 120;
                e.Scales.Add(twoWeekTimeScale);

                e.RangeMinimum = new DateTime(e.RangeMinimum.Year, 1, 1);
                e.RangeMaximum = e.RangeMinimum.AddYears(1);
            }
        }
    }

    public class TwoWeekTimeScale : TimeScaleFixedInterval {
        public TwoWeekTimeScale()
            : base(TimeSpan.FromDays(14)) {
        }
        public override DateTime Floor(DateTime date) {
            DateTime startOfWeeek = DateTimeHelper.GetStartOfWeekUI(date,
                                                                    DateTimeHelper.FirstDayOfWeek);
            if (DateTimeHelper.GetWeekOfYear(date) % 2 == 0)
                return startOfWeeek.AddDays(-7);

            return startOfWeeek;
        }
        public override string FormatCaption(DateTime start, DateTime end) {
            string dateString = "Week {0} - Week {1}";
            return String.Format(dateString, DateTimeHelper.GetWeekOfYear(start),
                                 DateTimeHelper.GetWeekOfYear(end.AddTicks(-1)));
        }
    }
}

Form1.vb

Imports Microsoft.VisualBasic
Imports System
Imports System.Windows.Forms
Imports DevExpress.XtraScheduler
Imports DevExpress.XtraScheduler.Native

Namespace WindowsFormsApplication1
    Partial Public Class Form1
        Inherits Form
        Public Sub New()
            InitializeComponent()
        End Sub

        Private Sub schedulerControl1_RangeControlAutoAdjusting(ByVal sender As Object, _
                                                                ByVal e As RangeControlAdjustEventArgs) _
                                                            Handles schedulerControl.RangeControlAutoAdjusting
            schedulerControl.OptionsRangeControl.AutoFormatScaleCaptions = True
            Dim activeViewType As SchedulerViewType = schedulerControl.ActiveViewType

            If activeViewType = SchedulerViewType.WorkWeek Then
                schedulerControl.OptionsRangeControl.AutoFormatScaleCaptions = False
                e.Scales(4).DisplayFormat = "dddd"
                e.Scales(4).Width = 70
            End If

            If activeViewType = SchedulerViewType.Month Then
                schedulerControl.OptionsRangeControl.AutoFormatScaleCaptions = False

                e.Scales.Clear()

                Dim monthScale As New TimeScaleMonth()
                monthScale.DisplayFormat = "MMMM yyyy"
                e.Scales.Add(monthScale)

                Dim twoWeekTimeScale As New TwoWeekTimeScale()
                twoWeekTimeScale.Width = 120
                e.Scales.Add(twoWeekTimeScale)

                e.RangeMinimum = New DateTime(e.RangeMinimum.Year, 1, 1)
                e.RangeMaximum = e.RangeMinimum.AddYears(1)
            End If
        End Sub
    End Class

    Public Class TwoWeekTimeScale
        Inherits TimeScaleFixedInterval
        Public Sub New()
            MyBase.New(TimeSpan.FromDays(14))
        End Sub
        Public Overrides Overloads Function Floor(ByVal [date] As DateTime) As DateTime
            Dim startOfWeeek As DateTime = DateTimeHelper.GetStartOfWeekUI([date], DateTimeHelper.FirstDayOfWeek)
            If DateTimeHelper.GetWeekOfYear([date]) Mod 2 = 0 Then
                Return startOfWeeek.AddDays(-7)
            End If

            Return startOfWeeek
        End Function
        Public Overrides Function FormatCaption(ByVal start As DateTime, ByVal [end] As DateTime) As String
            Dim dateString As String = "Week {0} - Week {1}"
            Return String.Format(dateString, DateTimeHelper.GetWeekOfYear(start), _
                                 DateTimeHelper.GetWeekOfYear([end].AddTicks(-1)))
        End Function
    End Class
End Namespace