DayView.DateHeaderStyle Property

Gets or sets a style of day headers displayed in the Day View and Work-Week View.

Namespace: DevExpress.Xpf.Scheduler

Assembly: DevExpress.Xpf.Scheduler.v22.2.dll

NuGet Package: DevExpress.Wpf.Scheduler

Declaration

C#

public Style DateHeaderStyle { get; set; }

VB.NET

Public Property DateHeaderStyle As Style

Property Value

Type	Description
Style	A Style object that represents a style to be applied to day headers.

Remarks

Important

You are viewing documentation for the legacy WPF Scheduler control. If you’re starting a new project, we strongly recommend that you use a new control declared in the DevExpress.Xpf.Scheduling namespace. If you decide to upgrade an existing project in order to switch to the updated scheduler control, see the Migration Guidelines document.

The DateHeaderStyle property specifies the style that groups together properties, resources, and event handlers and shares them between instances of the VisualDateHeader type.

Target Type: VisualDateHeader

To learn more, see Styles and Templates.

Example

This example demonstrates how to use the DayView.DateHeaderStyle property to apply a custom style to day headers displayed in the Day View and Work-Week View.

View Example

MainWindow.xaml

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication1"
        xmlns:dxsch="http://schemas.devexpress.com/winfx/2008/xaml/scheduler"
        xmlns:dxschd ="clr-namespace:DevExpress.Xpf.Scheduler.Drawing;assembly=DevExpress.Xpf.Scheduler.v10.2"
        Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <Style x:Key="DateHeaderStyle" TargetType="{x:Type dxschd:VisualDateHeader}">
        <Style.Resources>
            <local:DateTimeToShortDateStringConverter x:Key="DateTimeConverter"/>
        </Style.Resources>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type dxschd:VisualDateHeader}">
                    <Border x:Name="border"
                            Background="White"
                            MinHeight="35" Padding="1"
                            DataContext="{Binding}">
                        <Border x:Name="border1" Background="#FFBAACB6">
                            <ContentControl TextElement.Foreground="White"
                                            Content="{TemplateBinding Content}"
                                            ContentTemplate="{TemplateBinding ContentTemplate}">
                            </ContentControl>
                        </Border>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="ContentTemplate">
            <Setter.Value>
                <DataTemplate>
                    <Grid>
                        <TextBlock 
                            x:Name="text"
                            Foreground="White"
                            TextAlignment="Center" VerticalAlignment="Center"
                            FontFamily="Verdana" FontSize="12"
                            Text="{Binding IntervalStart, Converter={StaticResource DateTimeConverter}, ConverterParameter='dd MMMM'}">
                        </TextBlock>
                    </Grid>
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

<Grid>
    <dxsch:SchedulerControl Name="schedulerControl1"
                            HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
                            ActiveViewType="WorkWeek">
    </dxsch:SchedulerControl>
</Grid>
</Window>

MainWindow.xaml.cs

using System;
using System.Windows;
using System.Windows.Data;

namespace WpfApplication1 {
    public partial class MainWindow : Window {
        public MainWindow() {
            InitializeComponent();

            Style style = (Style)this.FindResource("DateHeaderStyle");
            schedulerControl1.DayView.DateHeaderStyle = style;
            schedulerControl1.WorkWeekView.DateHeaderStyle = style;
        }
    }

    public class DateTimeToShortDateStringConverter : IValueConverter {
        public object Convert(object value, Type targetType,
                              object parameter, System.Globalization.CultureInfo culture) {
            if (value == null)
                return null;
            DateTime dateTimeValue = (DateTime)value;

            string param = parameter != null ? parameter.ToString() : string.Empty;
            if (param == string.Empty)
                param = "MM/dd";

            return dateTimeValue.ToString(param);
        }
        public object ConvertBack(object value, Type targetType, 
                                  object parameter, System.Globalization.CultureInfo culture) {
            return null;
        }
    }
}

MainWindow.xaml.vb

Imports Microsoft.VisualBasic
Imports System
Imports System.Windows
Imports System.Windows.Data

Namespace WpfApplication1
    Partial Public Class MainWindow
        Inherits Window
        Public Sub New()
            InitializeComponent()

            Dim style As Style = CType(Me.FindResource("DateHeaderStyle"), Style)
            schedulerControl1.DayView.DateHeaderStyle = style
            schedulerControl1.WorkWeekView.DateHeaderStyle = style
        End Sub
    End Class

    Public Class DateTimeToShortDateStringConverter
        Implements IValueConverter
        Public Function Convert(ByVal value As Object, ByVal targetType As Type, _
                                ByVal parameter As Object, _
                                ByVal culture As System.Globalization.CultureInfo) _
                            As Object Implements IValueConverter.Convert
            If value Is Nothing Then
                Return Nothing
            End If
            Dim dateTimeValue As DateTime = CDate(value)

            Dim param As String = If(parameter IsNot Nothing, parameter.ToString(), String.Empty)
            If param = String.Empty Then
                param = "MM/dd"
            End If

            Return dateTimeValue.ToString(param)
        End Function
        Public Function ConvertBack(ByVal value As Object, ByVal targetType As Type, _
                                    ByVal parameter As Object, _
                                    ByVal culture As System.Globalization.CultureInfo) _
                                As Object Implements IValueConverter.ConvertBack
            Return Nothing
        End Function
    End Class
End Namespace

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the DateHeaderStyle property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

XAML

how-to-display-custom-tooltips-for-appointments-resource-headers-and-date-headers-e4432/CS/MainWindow.xaml#L273

<dxsch:SchedulerControl.DayView>
    <dxsch:DayView ResourcesPerPage="3" AppointmentToolTipContentTemplate="{StaticResource AppointmentToolTipContentTemplate}" HorizontalResourceHeaderStyle="{StaticResource HorizontalResourceHeaderStyle}" DateHeaderStyle="{StaticResource DateHeaderStyle}" />
</dxsch:SchedulerControl.DayView>