SchedulerControl.LayoutViewInfoCustomizing Event

Use this event to customize the appearance of certain visual elements before they are painted.

Namespace : DevExpress.XtraScheduler

Assembly : DevExpress.XtraScheduler.v25.2.dll

NuGet Package : DevExpress.Win.Scheduler

Declaration

C#
VB.NET

csharp

public event EventHandler<LayoutViewInfoCustomizingEventArgs> LayoutViewInfoCustomizing

Public Event LayoutViewInfoCustomizing As EventHandler(Of LayoutViewInfoCustomizingEventArgs)

Event Data

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

Property	Description
Cache
Kind	Gets the type of a visual element that raises the event.
ShouldRecalculateLayout	Forces layout recalculation after applying changes specified in the event handler.
ViewInfo	Provides access to the object which contains the information used to render the layout element.

Remarks

The LayoutViewInfoCustomizing event allows you to implement conditional styling of visual elements contained in the Scheduler view based on the resource and time interval.

The LayoutViewInfoCustomizing event occurs before painting a visual element of the Scheduler view, such as the time cell, day header, day-of-week header or resource header.

Use the LayoutViewInfoCustomizingEventArgs.Kind property to distinguish between a cell and a header. Subsequently, you can cast the LayoutViewInfoCustomizingEventArgs.ViewInfo object to a proper type and modify it as your needs dictate.

Example

This example handles the SchedulerControl.LayoutViewInfoCustomizing event to change the color of time cells and header captions. The header’s caption indicates the type of ViewInfo object that is used to visualize the header.

CustomizingVisualElements.cs
CustomizingVisualElements.vb

csharp

public static void scheduler_LayoutViewInfoCustomizing(object sender, LayoutViewInfoCustomizingEventArgs e) {
    string s = e.ViewInfo.GetType().ToString().Substring("DevExpress.XtraScheduler.Drawing.".Length);
    if (e.Kind == LayoutElementKind.DateHeader) {
        SchedulerHeader header = e.ViewInfo as SchedulerHeader;
        if (header != null) header.Caption = s;
    }
    if (e.Kind == LayoutElementKind.Cell) {
        SchedulerViewCellBase cell = e.ViewInfo as SchedulerViewCellBase;
        if (cell != null) cell.Appearance.BackColor = Color.LightYellow;
        SingleWeekCellBase cellWeek = e.ViewInfo as SingleWeekCellBase;
        if (cellWeek != null) {
            cellWeek.Appearance.BackColor = Color.LightCyan;
            cellWeek.Header.Caption = s;
        }
    }
}

Public Shared Sub scheduler_LayoutViewInfoCustomizing(ByVal sender As Object, ByVal e As LayoutViewInfoCustomizingEventArgs)
    Dim s As String = e.ViewInfo.GetType().ToString().Substring("DevExpress.XtraScheduler.Drawing.".Length)
    If e.Kind = LayoutElementKind.DateHeader Then
        Dim header As SchedulerHeader = TryCast(e.ViewInfo, SchedulerHeader)
        If header IsNot Nothing Then
            header.Caption = s
        End If
    End If
    If e.Kind = LayoutElementKind.Cell Then
        Dim cell As SchedulerViewCellBase = TryCast(e.ViewInfo, SchedulerViewCellBase)
        If cell IsNot Nothing Then
            cell.Appearance.BackColor = Color.LightYellow
        End If
        Dim cellWeek As SingleWeekCellBase = TryCast(e.ViewInfo, SingleWeekCellBase)
        If cellWeek IsNot Nothing Then
            cellWeek.Appearance.BackColor = Color.LightCyan
            cellWeek.Header.Caption = s
        End If
    End If
End Sub