TimeCellsControlBase.CustomDrawTimeRegion Event

Allows you to manually redraw Time Regions displayed on Scheduler Reports. This custom style affects only reports. To customize the Time Region appearance at runtime, handle the SchedulerControl.CustomDrawTimeRegion event instead.

Namespace: DevExpress.XtraScheduler.Reporting

Assembly: DevExpress.XtraScheduler.v23.2.Reporting.dll

NuGet Package: DevExpress.Win.SchedulerReporting

Declaration

C#

public event EventHandler<CustomDrawTimeRegionEventArgs> CustomDrawTimeRegion

VB.NET

Public Event CustomDrawTimeRegion As EventHandler(Of CustomDrawTimeRegionEventArgs)

Event Data

The CustomDrawTimeRegion event's data class is DevExpress.XtraScheduler.CustomDrawTimeRegionEventArgs.

Remarks

TimeRegion objects allow you to create time intervals that impose specific restrictions on appointments. For instance, a Time Region can prevent users from adding new appointments to this interval, or modify appointments that already belong to it.

Time Regions have their own appearance so that users can identify them at runtime, but are hidden in Reports. Use the corresponding approach to display Time Regions based on whether you utilize the SchedulerControlPrintAdapter or SchedulerStoragePrintAdapter component to generate reports.

SchedulerControlPrintAdapter

A SchedulerControlPrintAdapter receives all data directly from the Scheduler Control, including Time Regions. To display them, enable the DisplayTimeRegions property.

C#

buttonReport.Click += (s, e) => {
    var xr = new myXtraSchedulerReport();
    SchedulerControlPrintAdapter adp = new SchedulerControlPrintAdapter(schedulerControl1);
    adp.DisplayTimeRegions = true;
    xr.SchedulerAdapter = adp;
    var printTool = new DevExpress.XtraReports.UI.ReportPrintTool(xr);
    printTool.ShowPreview();
};

VB.NET

AddHandler buttonReport.Click, Sub(s, e)
    Dim xr = New myXtraSchedulerReport()
    Dim adp As New SchedulerControlPrintAdapter(schedulerControl1)
    adp.DisplayTimeRegions = True
    xr.SchedulerAdapter = adp
    Dim printTool = New DevExpress.XtraReports.UI.ReportPrintTool(xr)
    printTool.ShowPreview()
End Sub

This approach does not allow you to choose which Time Regions should be visible.

SchedulerStoragePrintAdapter

A SchedulerStoragePrintAdapter receives data from a Scheduler Data Storage. Time Regions belong to a control itself and are not kept in the Storage. For this reason, the Adapter cannot access Time Regions and you need to populate the TimeRegions collection. This allows you to control which Time Regions should be visible in Reports.

C#

buttonReport.Click += (s, e) => {
    var xr = new myXtraSchedulerReport();
    SchedulerStoragePrintAdapter adp = new SchedulerStoragePrintAdapter(schedulerStorage1);
    TimeRegion tr = new TimeRegion();
    tr.Start = baseDate.AddHours(6);
    tr.End = baseDate.AddHours(18);
    tr.Editable = true;
    tr.Recurrence = new RecurrenceInfo();
    tr.Recurrence.Start = tr.Start;
    tr.Recurrence.Type = RecurrenceType.Weekly;
    tr.Recurrence.WeekDays = WeekDays.WorkDays;
    adp.TimeRegions.Add(tr);
    xr.SchedulerAdapter = adp;
    var printTool = new DevExpress.XtraReports.UI.ReportPrintTool(xr);
    printTool.ShowPreview();
};

VB.NET

AddHandler buttonReport.Click, Sub(s, e)
    Dim xr = New myXtraSchedulerReport()
    Dim adp As New SchedulerStoragePrintAdapter(schedulerStorage1)
    Dim tr As New TimeRegion()
    tr.Start = baseDate.AddHours(6)
    tr.End = baseDate.AddHours(18)
    tr.Editable = True
    tr.Recurrence = New RecurrenceInfo()
    tr.Recurrence.Start = tr.Start
    tr.Recurrence.Type = RecurrenceType.Weekly
    tr.Recurrence.WeekDays = WeekDays.WorkDays
    adp.TimeRegions.Add(tr)
    xr.SchedulerAdapter = adp
    Dim printTool = New DevExpress.XtraReports.UI.ReportPrintTool(xr)
    printTool.ShowPreview()
End Sub

Custom Draw Time Regions

Regardless of the adapter component type used, you can handle the TimeCellsControlBase.CustomDrawTimeRegion event to redraw Time Regions.

C#

private void DvTimeCells_CustomDrawTimeRegion(object sender, CustomDrawTimeRegionEventArgs e) {
    DateTime baseDate = DateTimeHelper.GetStartOfWeek(DateTime.Today);
    baseDate = baseDate.AddDays(-15);
    if (e.TimeRegion.Start == baseDate.AddHours(6) && e.TimeRegion.End == baseDate.AddHours(18)) {
        e.Cache.FillRectangle(System.Drawing.Brushes.IndianRed, e.Bounds);
    }
}

VB.NET

Private Sub DvTimeCells_CustomDrawTimeRegion(ByVal sender As Object, ByVal e As CustomDrawTimeRegionEventArgs)
    Dim baseDate As Date = DateTimeHelper.GetStartOfWeek(Date.Today)
    baseDate = baseDate.AddDays(-15)
    If e.TimeRegion.Start = baseDate.AddHours(6) AndAlso e.TimeRegion.End = baseDate.AddHours(18) Then
        e.Cache.FillRectangle(System.Drawing.Brushes.IndianRed, e.Bounds)
    End If
End Sub