ItemsControl::GroupStyle Property
Gets a collection of GroupStyle objects that define the appearance of each level of groups.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
public: property ObservableCollection<GroupStyle^>^ GroupStyle { ObservableCollection<GroupStyle^>^ get (); }
<object> <object.GroupStyle> OneOrMoreGroupStyleObjects </object.GroupStyle> </object>
XAML Values
Property Value
Type: System.Collections.ObjectModel::ObservableCollection<GroupStyle>A collection of GroupStyle objects that define the appearance of each level of groups.
The following examples show an ItemsControl that is bound to an XmlDataProvider and the code-behind content that contains the logic to add and remove grouping. When the check box is checked, the content of the ItemsControl is grouped by the Type attribute.
Each group is of type CollectionViewGroup. The GroupStyle HeaderTemplate is specified so that it appears as a TextBlock that displays the Name of each the group. In this case, the Name is either Work or Home.
<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>
More Code
| How to: Group Items in a ListView That Implements a GridView | This example shows how to display groups of items in the GridView view mode of a ListView control. |
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.