通过分组在Win 8.1 Gridview中启用虚拟化
我一直在尝试减少包含此gridview的页面的加载时间,根据MS文档,如果使用分组,您将无法获得虚拟化。有人知道怎么做吗通过分组在Win 8.1 Gridview中启用虚拟化,gridview,windows-8.1,ui-virtualization,Gridview,Windows 8.1,Ui Virtualization,我一直在尝试减少包含此gridview的页面的加载时间,根据MS文档,如果使用分组,您将无法获得虚拟化。有人知道怎么做吗 <CollectionViewSource x:Name="serviceViewSource" Source="{Binding PageData}" IsSourceGrouped="True" ItemsPath="Contents" /> <GridView x:Name="itemGridView" Automa
<CollectionViewSource x:Name="serviceViewSource" Source="{Binding PageData}" IsSourceGrouped="True" ItemsPath="Contents" />
<GridView
x:Name="itemGridView"
AutomationProperties.AutomationId="ItemsGridView"
AutomationProperties.Name="Items"
ScrollViewer.IsHorizontalScrollChainingEnabled="False"
TabIndex="1"
Padding="120,0,0,50"
ItemsSource="{Binding Source={StaticResource serviceViewSource}}"
SelectionMode="Multiple"
IsSwipeEnabled="True"
IsItemClickEnabled="True"
IsEnabled="{Binding IsGridViewEnabled}"
CanReorderItems="False" CanDragItems="False" Grid.Row="1" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" ShowsScrollingPlaceholders="True"
common:GridViewItemClickedCommand.Command="{Binding ItemClickedCommand}" ItemTemplateSelector="{StaticResource gridViewTemplateSelector}"
>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch"/>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.GroupStyle>
<GroupStyle HidesIfEmpty="True">
<GroupStyle.HeaderTemplate>
<DataTemplate>
<Grid x:Name="headerGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="90*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Button x:Name="headerButton" Content='{Binding Name}' Background="Transparent" Foreground="AliceBlue" BorderThickness="0" Command="{Binding DataContext.HeaderCommand, ElementName=pageRoot}"
IsRightTapEnabled="False" IsHoldingEnabled="False" IsDoubleTapEnabled="False" CommandParameter="{Binding HeaderIdentifier}" FontFamily="Global User Interface" />
<ProgressRing Grid.Column="1" IsActive="{Binding LoadingData}" />
</Grid>
</DataTemplate>
</GroupStyle.HeaderTemplate>
<GroupStyle.ContainerStyle>
<Style TargetType="GroupItem">
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="VerticalAlignment" Value="Stretch"/>
</Style>
</GroupStyle.ContainerStyle>
<GroupStyle.Panel>
<ItemsPanelTemplate>
<VariableSizedWrapGrid Margin="0,0,80,0">
</VariableSizedWrapGrid>
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</GridView.GroupStyle>
</GridView>
在Windows 8.1中,使用默认值的GridView
将使用ItemsRapGrid
作为面板,这将为您实现组虚拟化。使用StackPanel
您的代码将无法实现UI虚拟化。谢谢,我发现了,文档中的这一行让我很反感。“分组数据不支持UI虚拟化。有关分组数据的详细信息,请参阅如何在列表或网格中对项目进行分组”,但上的视频为我清除了这一点。现在,我被检测到的布局周期错误所困扰:-|