WPF TreeView-组节点样式
我有一个称为组的IList类型的列表,每个组都有一个称为项的IList类型的子列表。组和项都有名为Name的属性。为了显示这个层次结构,我使用了一个树状视图 我想将层次结构中的每个组显示为一个扩展器,但它并没有按我所希望的那样显示 到目前为止,我的xaml:WPF TreeView-组节点样式,wpf,xaml,styles,treeview,Wpf,Xaml,Styles,Treeview,我有一个称为组的IList类型的列表,每个组都有一个称为项的IList类型的子列表。组和项都有名为Name的属性。为了显示这个层次结构,我使用了一个树状视图 我想将层次结构中的每个组显示为一个扩展器,但它并没有按我所希望的那样显示 到目前为止,我的xaml: <DataTemplate x:Key="NavItemTemplate"> <TextBlock Text="{Binding Name}"/> </DataTemplate> <Hie
<DataTemplate x:Key="NavItemTemplate">
<TextBlock Text="{Binding Name}"/>
</DataTemplate>
<HierarchicalDataTemplate x:Key="NavGroupTemplate" ItemsSource="{Binding Items}" ItemTemplate="{StaticResource NavItemTemplate}">
<TextBlock Text="{Binding Name}"/>
</HierarchicalDataTemplate>
<Style x:Key="RootItemStyle" TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TreeViewItem">
<Grid>
<Expander x:Name="Exp" TextElement.FontWeight="Bold" IsExpanded="{TemplateBinding TreeViewItem.IsExpanded}">
<Expander.Header>
<ContentPresenter x:Name="ExpCP" ContentSource="Header"/>
</Expander.Header>
<ItemsPresenter/>
</Expander>
<Border x:Name="CP" Padding="25,0,0,0" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Visibility="Collapsed">
<ContentPresenter ContentSource="Header" HorizontalAlignment="Left" VerticalAlignment="Center" />
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="Exp" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="CP" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<TreeView ItemsSource="{Binding}" ItemTemplate="{StaticResource NavGroupTemplate}" ItemContainerStyle="{StaticResource RootItemStyle}">
上述风格
工作对象:
第1组(扩展器)
- 项目1
- 项目1
- 分项1
此外,上述风格也需要进一步修正。当我选择expander边框侧时,它会触发selecteditem事件,这应该被阻止。如果您没有在HierarchycalDataTemplate中指定ItemTemplate,它会起作用(添加了左边距以实际查看树层次结构):
我不久前也做了类似的事情,但那是使用XmlDataProvider(不完全是IList场景)。希望它能帮上一点忙
<XmlDataProvider x:Key="MenuDataProvider" XPath="*">
<x:XData>
<MainMenu xmlns="">
<Admin>
<Facility>
<Test/>
</Facility>
<Carpark />
</Admin>
<Sequence>
<Lcd />
</Sequence>
</MainMenu>
</x:XData>
</XmlDataProvider>
<HierarchicalDataTemplate x:Key="NodeTemplate">
<TextBlock x:Name="tb" />
<HierarchicalDataTemplate.ItemsSource>
<Binding XPath="child::node()" />
</HierarchicalDataTemplate.ItemsSource>
<HierarchicalDataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=NodeType}" Value="Text">
<Setter TargetName="tb" Property="Text" Value="{Binding Path=Value}"></Setter>
</DataTrigger>
<DataTrigger Binding="{Binding Path=NodeType}" Value="Element">
<Setter TargetName="tb" Property="Text" Value="{Binding Path=Name}"></Setter>
</DataTrigger>
</HierarchicalDataTemplate.Triggers>
</HierarchicalDataTemplate>
它看起来像:
您的代码对我来说运行良好。我刚刚删除了不必要的代码,为子元素添加了边距,并更改为仅粗体的组元素
<HierarchicalDataTemplate x:Key="NavGroupTemplate" ItemsSource="{Binding Items}">
<TextBlock Text="{Binding Name}" />
</HierarchicalDataTemplate>
<Style x:Key="RootItemStyle" TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TreeViewItem">
<Grid>
<Expander x:Name="Exp" IsExpanded="{TemplateBinding TreeViewItem.IsExpanded}">
<Expander.Header>
<ContentPresenter x:Name="ExpCP" ContentSource="Header" TextElement.FontWeight="Bold" />
</Expander.Header>
<ItemsPresenter />
</Expander>
<Border x:Name="CP" Padding="35,0,0,0" Background="{TemplateBinding Background}" Visibility="Collapsed">
<ContentPresenter ContentSource="Header" HorizontalAlignment="Left" VerticalAlignment="Center" />
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="Exp" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="CP" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<TreeView ItemsSource="{Binding}" ItemTemplate="{StaticResource NavGroupTemplate}" ItemContainerStyle="{StaticResource RootItemStyle}">
</TreeView>
你能详细描述一下你的问题吗?这样我就能有更多的想法了。我也有类似的问题。我收集了按年份和月份排列的日期。当IsExpanded属性设置为true时,是否可以将整个路径扩展到日期?
<HierarchicalDataTemplate x:Key="NavGroupTemplate" ItemsSource="{Binding Items}">
<TextBlock Text="{Binding Name}" />
</HierarchicalDataTemplate>
<Style x:Key="RootItemStyle" TargetType="{x:Type TreeViewItem}">
<Setter Property="IsExpanded" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TreeViewItem">
<Grid>
<Expander x:Name="Exp" IsExpanded="{TemplateBinding TreeViewItem.IsExpanded}">
<Expander.Header>
<ContentPresenter x:Name="ExpCP" ContentSource="Header" TextElement.FontWeight="Bold" />
</Expander.Header>
<ItemsPresenter />
</Expander>
<Border x:Name="CP" Padding="35,0,0,0" Background="{TemplateBinding Background}" Visibility="Collapsed">
<ContentPresenter ContentSource="Header" HorizontalAlignment="Left" VerticalAlignment="Center" />
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="Exp" Property="Visibility" Value="Collapsed"/>
<Setter TargetName="CP" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<TreeView ItemsSource="{Binding}" ItemTemplate="{StaticResource NavGroupTemplate}" ItemContainerStyle="{StaticResource RootItemStyle}">
</TreeView>