我有我用于SnapView和Portrait视图的ListView。但是,我想在这两个视图中更改项目模板的某些项目。 VisualStateManager似乎是理想的做法,但我无法弄明白。
这是我的ListView XAML:
<ListView x:Name="SampleListView" ItemsSource="{Binding Samples}" Visibility="Collapsed">
<ListView.ItemTemplate>
<DataTemplate>
<local:SampleBlock SampleText="{Binding ElementName=pageRoot, Path=DataContext.SampleText, Mode=TwoWay}"
Height="70" Width="Auto" Margin="5" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
我想使用页面的VisualStateManager更改SampleBlock控件的高度和边距。这是我的可视状态管理器,它显示和隐藏我的ListView:
<VisualState x:Name="FullScreenPortrait">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="SampleListView" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="SampleGridView" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Snapped">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="SampleListView" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="SampleGridView" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
有没有办法从页面的VisualStateManager访问项目模板,还是应该从不同角度攻击它?
答案 0 :(得分:9)
您无法更改DataTemplate的属性,但您可以将ListView的实际ItemTemplate更改为用于捕捉视图的特定模板
<VisualState x:Name="Snapped">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="ItemTemplate">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedListViewItemTemplate}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>