GroupStyle.HeaderTemplate Özellik

Tanım

Ad Alanı:

System.Windows.Controls

Bütünleştirilmiş Kod:

PresentationFramework.dll

Grup üst bilgisini görüntülemek için kullanılan şablonu alır veya ayarlar.

public:
 property System::Windows::DataTemplate ^ HeaderTemplate { System::Windows::DataTemplate ^ get(); void set(System::Windows::DataTemplate ^ value); };

public System.Windows.DataTemplate HeaderTemplate { get; set; }

member this.HeaderTemplate : System.Windows.DataTemplate with get, set

Public Property HeaderTemplate As DataTemplate

Özellik Değeri

DataTemplate

DataTemplate Grup üst bilgisini görüntülemek için kullanılan nesne. Varsayılan değer: null.

Örnekler

Aşağıdaki örneklerde, ItemsControl bir öğesine bağlı olan ve XmlDataProvider gruplandırma ekleme ve kaldırma mantığını içeren arka planda kod içeriği gösterilir. Onay kutusu işaretlendiğinde, öğesinin ItemsControl içeriği özniteliğine Type göre gruplandırılır.

Her grup türündedir CollectionViewGroup. GroupStyle HeaderTemplate, her grubun öğesini görüntüleyen Name bir TextBlock olarak görünecek şekilde belirtilir. Bu durumda, Name veya Work Homeşeklindedir.

<Window x:Class="GroupingSample.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Grouping Sample"
    Width="220" Height="550">
  <StackPanel>

    <StackPanel.Resources>
      <XmlDataProvider x:Key="myTasks" XPath="Tasks/Task">
        <x:XData>
          <Tasks xmlns="">
            <Task Name="Groceries" Priority="2" Type="Home">
              <Description>Pick up Groceries and Detergent</Description>
            </Task>
            <Task Name="Laundry" Priority="2" Type="Home">
              <Description>Do Laundry</Description>
            </Task>
            <Task Name="Email" Priority="1" Type="Work">
              <Description>Email Clients</Description>
            </Task>
            <Task Name="Clean" Priority="3" Type="Work">
              <Description>Clean my office</Description>
            </Task>
            <Task Name="Dinner" Priority="1" Type="Home">
              <Description>Get ready for family reunion</Description>
            </Task>
            <Task Name="Proposals" Priority="2" Type="Work">
              <Description>Review new budget proposals</Description>
            </Task>
          </Tasks>
        </x:XData>
      </XmlDataProvider>
    </StackPanel.Resources>

    <TextBlock Margin="12,5,5,0" FontSize="20" Text="My Task List"/>
    <CheckBox Margin="10,5,5,10" Checked="AddGrouping"
              Unchecked="RemoveGrouping">Group by task type</CheckBox>
    <ItemsControl Margin="10" Name="myItemsControl"
                  ItemsSource="{Binding Source={StaticResource myTasks}}">
      <ItemsControl.ItemTemplate>
        <DataTemplate>
          <DataTemplate.Resources>
            <Style TargetType="TextBlock">
              <Setter Property="FontSize" Value="18"/>
              <Setter Property="HorizontalAlignment" Value="Center"/>
            </Style>
          </DataTemplate.Resources>
          <Grid>
            <Ellipse Fill="Silver"/>
            <StackPanel>
              <TextBlock Margin="3,3,3,0"
                         Text="{Binding XPath=@Name}"/>
              <TextBlock Margin="3,0,3,7"
                         Text="{Binding XPath=@Priority}"/>
            </StackPanel>
          </Grid>
        </DataTemplate>
      </ItemsControl.ItemTemplate>
      <ItemsControl.ItemContainerStyle>
        <Style>
          <Setter Property="Control.Width" Value="100"/>
          <Setter Property="Control.Margin" Value="5"/>
        </Style>
      </ItemsControl.ItemContainerStyle>
      <ItemsControl.GroupStyle>
        <GroupStyle>
          <GroupStyle.HeaderTemplate>
            <DataTemplate>
              <TextBlock FontWeight="Bold" FontSize="15"
                         Text="{Binding Path=Name}"/>
            </DataTemplate>
          </GroupStyle.HeaderTemplate>
        </GroupStyle>
      </ItemsControl.GroupStyle>
    </ItemsControl>
  </StackPanel>
</Window>

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

namespace GroupingSample
{
    public partial class Window1 : System.Windows.Window
    {

        public Window1()
        {
            InitializeComponent();
        }

        CollectionView myView;
        private void AddGrouping(object sender, RoutedEventArgs e)
        {
            myView = (CollectionView)CollectionViewSource.GetDefaultView(myItemsControl.ItemsSource);
            if (myView.CanGroup == true)
            {
                PropertyGroupDescription groupDescription
                    = new PropertyGroupDescription("@Type");
                myView.GroupDescriptions.Add(groupDescription);
            }
            else
            {
                return;
            }
        }

        private void RemoveGrouping(object sender, RoutedEventArgs e)
        {
            myView = (CollectionView)CollectionViewSource.GetDefaultView(myItemsControl.ItemsSource);
            myView.GroupDescriptions.Clear();
        }
    }
}

Imports System.Windows
Imports System.Windows.Data

Namespace GroupingSample
    Partial Public Class Window1
        Inherits System.Windows.Window

        Public Sub New()
            InitializeComponent()
        End Sub

        Private myView As CollectionView
        Private Sub AddGrouping(ByVal sender As Object, ByVal e As RoutedEventArgs)
            myView = CType(CollectionViewSource.GetDefaultView(myItemsControl.ItemsSource), CollectionView)
            If myView.CanGroup = True Then
                Dim groupDescription As New PropertyGroupDescription("@Type")
                myView.GroupDescriptions.Add(groupDescription)
            Else
                Return
            End If
        End Sub

        Private Sub RemoveGrouping(ByVal sender As Object, ByVal e As RoutedEventArgs)
            myView = CType(CollectionViewSource.GetDefaultView(myItemsControl.ItemsSource), CollectionView)
            myView.GroupDescriptions.Clear()
        End Sub
    End Class
End Namespace

Aşağıdaki örnekte özelliğinin nasıl kullanılacağı gösterilmektedir HeaderTemplate :

<ListBox Name="Master" Grid.Row="2" Grid.ColumnSpan="3" Margin="8"
    ItemsSource="{Binding Source={StaticResource listingDataView}}">
    <ListBox.GroupStyle>
        <GroupStyle 
          HeaderTemplate="{StaticResource groupingHeaderTemplate}"
          />
    </ListBox.GroupStyle>
</ListBox>

aşağıdaki tanımıdır groupingHeaderTemplate DataTemplate:

<DataTemplate x:Key="groupingHeaderTemplate">
    <TextBlock Text="{Binding Path=Name}"
               Foreground="Navy" FontWeight="Bold" FontSize="12"/>
</DataTemplate>

Örneğin tamamı için bkz. Veri Bağlama Tanıtımı.

Ayrıca bkz.

• HeaderTemplateSelector