我有GridView使用DataTemplateSelector。在DataTemplateSelector上设置GridView时，它可以正常工作：
<GridView x:Name="PayeesGridView"
IsItemClickEnabled="True"
ItemTemplateSelector="{StaticResource PayeeTemplateSelector}"
ItemsSource="{Binding FilteredPayees,
Mode=OneWay}"
Padding="5"
SelectionMode="None">
<interactivity:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="ItemClick">
<core:CallMethodAction MethodName="GridViewItemClick" TargetObject="{Binding Mode=OneWay}" />
</core:EventTriggerBehavior>
</interactivity:Interaction.Behaviors>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid x:Name="ItemWrapGrid" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="Margin" Value="5" />
</Style>
</GridView.ItemContainerStyle>
</GridView>
但是，我正在尝试在DataTemplate内设置ItemContainerStyle，以便我可以使用VisualStateManager。我试着像这样声明：
<GridView x:Name="PayeesGridView"
IsItemClickEnabled="True"
ItemsSource="{Binding FilteredPayees,
Mode=OneWay}"
Padding="5"
SelectionMode="None">
<interactivity:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="ItemClick">
<core:CallMethodAction MethodName="GridViewItemClick" TargetObject="{Binding Mode=OneWay}" />
</core:EventTriggerBehavior>
</interactivity:Interaction.Behaviors>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid x:Name="ItemWrapGrid" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="Margin" Value="5" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="GridViewItem">
<Grid>
<Grid.Background>
<SolidColorBrush x:Name="GridBackground" Color="Transparent" />
</Grid.Background>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="PointerOver">
<VisualState.Setters>
<Setter Target="GridBackground.Color" Value="Green" />
</VisualState.Setters>
<Storyboard />
</VisualState>
<VisualState x:Name="Pressed">
<VisualState.Setters>
<Setter Target="GridBackground.Color" Value="#36B536" />
</VisualState.Setters>
<Storyboard />
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
ContentTemplateSelector="{StaticResource PayeeTemplateSelector}" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GridView.ItemContainerStyle>
</GridView>
使用ContentPresenter并以与ContentTemplateSelector相同的方式指定ItemTemplateSelector GridView。这样做，GridView只显示每个Payee的对象视图。 VisualStates正常工作，但未使用我定义的DataTemplate。
DataTemplates定义Page.Resources，如此：
<DataTemplate x:Key="OpenPayeeDataTemplate" x:DataType="models:Payee">
<Grid>
<Border Width="230"
Height="230"
Background="White"
BorderBrush="#36B536"
BorderThickness="4">
<Grid Margin="5,0,5,0">
<Image Width="160"
Height="160"
Source="{x:Bind LogoBase64, Converter={StaticResource Base64StringToImageSourceConverter}}" />
<TextBlock VerticalAlignment="Top"
FontSize="14"
FontWeight="Bold"
Foreground="Black"
Text="{x:Bind CompanyName}"
TextAlignment="Left"
TextWrapping="WrapWholeWords" />
<TextBlock VerticalAlignment="Bottom"
FontSize="12"
FontWeight="Bold"
Foreground="Black"
Text="{x:Bind AccountNickname}"
TextAlignment="Right"
TextWrapping="WrapWholeWords" />
</Grid>
</Border>
</Grid>
</DataTemplate>
<DataTemplate x:Key="ClosedPayeeDataTemplate" x:DataType="models:Payee">
<Grid>
<Border Width="230"
Height="230"
Background="White"
BorderBrush="#36B536"
BorderThickness="4">
<Grid Margin="5,0,5,0">
<Image Width="160"
Height="160"
Source="{x:Bind LogoBase64, Converter={StaticResource Base64StringToImageSourceConverter}}" />
<TextBlock VerticalAlignment="Top"
FontSize="14"
FontWeight="Bold"
Foreground="Black"
Text="{x:Bind CompanyName}"
TextAlignment="Left"
TextWrapping="WrapWholeWords" />
<TextBlock VerticalAlignment="Bottom"
FontSize="12"
FontWeight="Bold"
Foreground="Black"
Text="{x:Bind AccountNickname}"
TextAlignment="Right"
TextWrapping="WrapWholeWords" />
</Grid>
</Border>
<Border Width="230"
Height="230"
Background="Gray"
Opacity="0.75" />
</Grid>
</DataTemplate>
<converters:PayeeDataTemplateSelector x:Name="PayeeTemplateSelector"
ClosedPayeeDataTemplate="{StaticResource ClosedPayeeDataTemplate}"
OpenPayeeDataTemplate="{StaticResource OpenPayeeDataTemplate}" />
或者，我尝试使用VisualStateManager内的DataTemplate，但它们未被触发，因此我需要在外使用 DataTemplate，因此希望在ContentPresenter内使用ItemContainerStyle。
我对某些ListViewItem执行类似操作，但他们不使用DataTemplateSelector，因此我不会遇到同样的问题。有没有办法让VisualStateManager在DataTemplate内工作，或让DataTemplateSelector在ContentPresenter内工作？
修改
这是我尝试放入Styles/DataTemplates.xaml的XAML。正在应用该样式，但我没有触发任何VisualStates。
<DataTemplate x:Key="PaymentTemplate">
<UserControl>
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="PointerOver">
<VisualState.Setters>
<Setter Target="GridItemOverlay.Background" Value="Green" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border Width="450"
Height="Auto"
Background="White"
BorderBrush="#36B536"
BorderThickness="4"
CornerRadius="5">
<Grid Margin="10,5,10,5">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="34" />
<RowDefinition />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<TextBlock Grid.Row="0"
Grid.Column="0"
Grid.ColumnSpan="2"
FontSize="26"
FontWeight="Bold"
Foreground="Black"
Text="{Binding AccountName}"
TextAlignment="Left"
TextWrapping="WrapWholeWords" />
<TextBlock Grid.Row="1"
Grid.Column="0"
Foreground="Black"
Text="{Binding Path=Description}"
TextAlignment="Left" />
<TextBlock Grid.Row="1"
Grid.Column="1"
Foreground="Black">
<Run Text="Payment Amount: " />
<Run Text="{Binding Path=PaymentAmount, Converter={StaticResource StringFormatConverter}, ConverterParameter='{}{0:N}'}" />
</TextBlock>
<TextBlock Grid.Row="2"
Grid.Column="1"
Foreground="Black">
<Run Text="Principal Amount: " />
<Run Text="{Binding Path=PrincipalAmount, Converter={StaticResource StringFormatConverter}, ConverterParameter='{}{0:N}'}" />
</TextBlock>
<TextBlock Grid.Row="3"
Grid.Column="0"
Foreground="Black">
<Run Text="Payment Date: " />
<Run Text="{Binding PaymentDate, Converter={StaticResource StringFormatConverter}, ConverterParameter='{}{0:MM/dd/yyyy}'}" />
</TextBlock>
<TextBlock Grid.Row="3"
Grid.Column="1"
Foreground="Black">
<Run Text="Interest Amount: " />
<Run Text="{Binding Path=InterestAmount, Converter={StaticResource StringFormatConverter}, ConverterParameter='{}{0:N}'}" />
</TextBlock>
</Grid>
</Border>
<Border x:Name="GridItemOverlay"
Background="Transparent"
Opacity="0.50" />
</Grid>
</UserControl>
</DataTemplate>
VisualState直接使用GridView.ItemContainerStyle设置Template时工作正常，但在单独的资源文件中从DataTemplate尝试时却不行。有什么想法吗？
答案 0 :(得分：2)
在内容模板选择器上不确定。
但是，您最初在DataTemplates中使用VisualStateManager的想法应该有效。
尝试此操作时，您错过了一件事，您需要将DataTemplate中的所有内容都包含在UserControl标记中！否则VisualStateManager将无效。
此处的示例：https://github.com/AppCreativity/Kliva/blob/master/src/Kliva/XAMLResources/DataTemplates.xaml#L21
答案 1 :(得分：0)
我可以通过在ContentTemplate内的ContentPresenter上设置ItemTemplate来实现我想要的效果，如下所示：
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="GridViewItem">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="PointerOver">
<VisualState.Setters>
<Setter Target="GridItemOverlay.Background" Value="Green" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter ContentTemplate="{StaticResource PaymentTemplate}" />
<Border x:Name="GridItemOverlay"
Background="Transparent"
Opacity="0.50" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GridView.ItemContainerStyle>
当然，PaymentTemplate是DataTemplate中定义的DataTemplates.xaml。理想情况下，我希望将VisualStateManager内容与DataTemplate本身捆绑在一起，以便在我的View中整理XAML，但这种方式现在适用。