RangeControlAdjustEventArgs Class

Provides data for the SchedulerControl.RangeControlAutoAdjusting event.

Namespace: DevExpress.XtraScheduler

Assembly: DevExpress.XtraScheduler.v20.1.Core.dll

Declaration

public class RangeControlAdjustEventArgs :
    EventArgs
Public Class RangeControlAdjustEventArgs
    Inherits EventArgs

Remarks

The SchedulerControl.RangeControlAutoAdjusting event occurs before the RangeControl's scales and range are changed to automatically adjust the RangeControl when an active view or start date of the bound SchedulerControl is changed. The RangeControlAdjustEventArgs class introduces the RangeControlAdjustEventArgs.Scales property that specifies a set of scales that are visible in the RangeControl. The RangeControlAdjustEventArgs.RangeMinimum and RangeControlAdjustEventArgs.RangeMaximum properties specify boundaries of the time range to be available in the RangeControl.

An instance of the RangeControlAdjustEventArgs class with appropriate settings is automatically created and passed to the corresponding event's handler.

Examples

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:

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)));
        }
    }
}

Inheritance

Object
EventArgs
RangeControlAdjustEventArgs
See Also