El estiramiento de los elementos de un ListView agrupados horizontalmente
me gustaría estirar los artículos de mi vista de lista horizontal, de modo que la zona verde (un ItemContainer seleccionada) se extiende desde la GroupHeader a la derecha.
He intentado configurar todos los elementos en los que podía pensar "HorizontalAlignment =" Stretch "", pero nada funcionó.
Aquí es mi ListView
<ListView
HorizontalAlignment="Stretch"
x:Name="AppointmentListView"
ItemContainerStyle="{StaticResource ListViewItemContainerStyle}"
ItemsSource="{Binding Source={StaticResource SelectedViewSource}}"
Grid.Column="1"
Grid.RowSpan="2">
<ListView.GroupStyle>
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<Grid Width="200">
<TextBlock Text="{Binding Converter={StaticResource DateYearStringConv}, Path=Key}" Foreground="White" FontSize="20" FontWeight="Light" Margin="10, 5, 0, 0"/>
</Grid>
</DataTemplate>
</GroupStyle.HeaderTemplate>
<GroupStyle.ContainerStyle>
<Style TargetType="GroupItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="GroupItem" >
<StackPanel Orientation="Horizontal" Margin="0, 0, 0, 10" HorizontalAlignment="Stretch">
<ContentPresenter Content="{TemplateBinding Content}" />
<ItemsControl x:Name="ItemsControl" ItemsSource="{Binding GroupItems}"/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
<GroupStyle.Panel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical" HorizontalAlignment="Stretch"/>
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</ListView.GroupStyle>
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical"/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<Canvas Width="400" Height="60" Background="Transparent">
<TextBlock Text="Here goes the content" />
</Canvas>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
ItemContainerStyle
<Style x:Key="ListViewItemContainerStyle" TargetType="ListViewItem">
<Setter Property="HorizontalAlignment" Value="Stretch" />
<Setter Property="FontFamily" Value="{StaticResource ContentControlThemeFontFamily}"/>
<Setter Property="FontSize" Value="{StaticResource ControlContentThemeFontSize}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="TabNavigation" Value="Local"/>
<Setter Property="IsHoldingEnabled" Value="True"/>
<Setter Property="Margin" Value="0,0,0,2"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListViewItem">
<Border x:Name="OuterContainer">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="PointerOver">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="PointerOverBorder"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="PointerOverBorder">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Thickness>0</Thickness>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<PointerDownThemeAnimation TargetName="ContentContainer"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="PointerOverBorder">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Thickness>0</Thickness>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOverPressed">
<Storyboard>
<PointerDownThemeAnimation TargetName="ContentContainer"/>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="PointerOverBorder"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="PointerOverBorder">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Thickness>0</Thickness>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To="{StaticResource ListViewItemDisabledThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="contentPresenter"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="FocusVisual"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused"/>
<VisualState x:Name="PointerFocused"/>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionHintStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.65" To="NoSelectionHint"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="VerticalSelectionHint">
<Storyboard>
<SwipeHintThemeAnimation ToHorizontalOffset="0" TargetName="SelectionBackground" ToVerticalOffset="15"/>
<SwipeHintThemeAnimation ToHorizontalOffset="0" TargetName="ContentBorder" ToVerticalOffset="15"/>
</Storyboard>
</VisualState>
<VisualState x:Name="HorizontalSelectionHint">
<Storyboard>
<SwipeHintThemeAnimation ToHorizontalOffset="-23" TargetName="SelectionBackground" ToVerticalOffset="0"/>
<SwipeHintThemeAnimation ToHorizontalOffset="-23" TargetName="ContentBorder" ToVerticalOffset="0"/>
</Storyboard>
</VisualState>
<VisualState x:Name="NoSelectionHint"/>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselecting"/>
<VisualState x:Name="Unselected"/>
<VisualState x:Name="UnselectedPointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="contentPresenter">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource ListViewItemSelectedForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="UnselectedSwiping"/>
<VisualState x:Name="Selecting">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectionBackground"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="contentPresenter">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="White"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill)" Storyboard.TargetName="SelectionBackground">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#FF82BA00"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectionBackground"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="contentPresenter">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="White"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill)" Storyboard.TargetName="SelectionBackground">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#FF82BA00"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedSwiping">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectionBackground"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="contentPresenter">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="White"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill)" Storyboard.TargetName="SelectionBackground">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#FF82BA00"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedUnfocused">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectionBackground"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="contentPresenter">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="White"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill)" Storyboard.TargetName="SelectionBackground">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#FF82BA00"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="DragStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.2" To="NotDragging"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="NotDragging"/>
<VisualState x:Name="Dragging">
<Storyboard>
<DoubleAnimation Duration="0" To="{StaticResource ListViewItemDragThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="InnerDragContent"/>
<DragItemThemeAnimation TargetName="InnerDragContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="DraggingTarget">
<Storyboard>
<DropTargetItemThemeAnimation TargetName="OuterContainer"/>
</Storyboard>
</VisualState>
<VisualState x:Name="MultipleDraggingPrimary">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="MultiArrangeOverlayBackground"/>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="MultiArrangeOverlayText"/>
<DoubleAnimation Duration="0" To="{StaticResource ListViewItemDragThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ContentBorder"/>
<FadeInThemeAnimation TargetName="MultiArrangeOverlayBackground"/>
<FadeInThemeAnimation TargetName="MultiArrangeOverlayText"/>
<DragItemThemeAnimation TargetName="ContentBorder"/>
<FadeOutThemeAnimation TargetName="SelectionBackground"/>
<FadeOutThemeAnimation TargetName="PointerOverBorder"/>
</Storyboard>
</VisualState>
<VisualState x:Name="MultipleDraggingSecondary">
<Storyboard>
<FadeOutThemeAnimation TargetName="ContentContainer"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ReorderHintStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.2" To="NoReorderHint"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="NoReorderHint"/>
<VisualState x:Name="BottomReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Bottom" ToOffset="{StaticResource ListViewItemReorderHintThemeOffset}" TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="TopReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Top" ToOffset="{StaticResource ListViewItemReorderHintThemeOffset}" TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="RightReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Right" ToOffset="{StaticResource ListViewItemReorderHintThemeOffset}" TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="LeftReorderHint">
<Storyboard>
<DragOverThemeAnimation Direction="Left" ToOffset="{StaticResource ListViewItemReorderHintThemeOffset}" TargetName="ReorderHintContent"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="DataVirtualizationStates">
<VisualState x:Name="DataAvailable"/>
<VisualState x:Name="DataPlaceholder">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="PlaceholderTextBlock">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="PlaceholderRect">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid x:Name="ReorderHintContent">
<Border x:Name="ContentContainer">
<Grid x:Name="InnerDragContent">
<Rectangle x:Name="PointerOverBorder" Fill="{StaticResource ListViewItemPointerOverBackgroundThemeBrush}" IsHitTestVisible="False" Margin="1" Opacity="0"/>
<Rectangle x:Name="FocusVisual" IsHitTestVisible="False" Opacity="0" Stroke="{StaticResource ListViewItemFocusBorderThemeBrush}" StrokeThickness="2"/>
<Rectangle x:Name="SelectionBackground" Margin="0" Opacity="0"/>
<Border x:Name="ContentBorder" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Margin="0">
<Grid>
<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" ContentTransitions="{TemplateBinding ContentTransitions}" Content="{TemplateBinding Content}" Margin="{TemplateBinding Padding}"/>
<TextBlock x:Name="PlaceholderTextBlock" Foreground="{x:Null}" IsHitTestVisible="False" Margin="{TemplateBinding Padding}" Opacity="0" Text="Xg"/>
<Rectangle x:Name="PlaceholderRect" Fill="{StaticResource ListViewItemPlaceholderBackgroundThemeBrush}" IsHitTestVisible="False" Visibility="Collapsed"/>
<Rectangle x:Name="MultiArrangeOverlayBackground" Fill="{StaticResource ListViewItemDragBackgroundThemeBrush}" IsHitTestVisible="False" Opacity="0"/>
</Grid>
</Border>
<TextBlock x:Name="MultiArrangeOverlayText" Foreground="{StaticResource ListViewItemDragForegroundThemeBrush}" FontSize="26.667" FontFamily="{StaticResource ContentControlThemeFontFamily}" IsHitTestVisible="False" Margin="18,9,0,0" Opacity="0" TextWrapping="Wrap" Text="{Binding TemplateSettings.DragItemsCount, RelativeSource={RelativeSource Mode=TemplatedParent}}" TextTrimming="WordEllipsis"/>
</Grid>
</Border>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
que lamentablemente no funciona, el área verde que puede ver en la captura de pantalla es un ItemContainer seleccionado, no un ItemTemplate – t4nky