Wpf 在树视图中展开父级时展开子级
当父节点展开时,我正在尝试展开子节点 否则说明:(Child.IsExpanded==Parent.IsExpanded) 这似乎是正确的,但似乎不起作用:Wpf 在树视图中展开父级时展开子级,wpf,binding,treeview,datatrigger,Wpf,Binding,Treeview,Datatrigger,当父节点展开时,我正在尝试展开子节点 否则说明:(Child.IsExpanded==Parent.IsExpanded) 这似乎是正确的,但似乎不起作用: <TreeView ItemsSource="{Binding}"> <TreeView.ItemContainerStyle> <Style TargetType="TreeViewItem"> <Style.Triggers>
<TreeView ItemsSource="{Binding}">
<TreeView.ItemContainerStyle>
<Style TargetType="TreeViewItem">
<Style.Triggers>
<DataTrigger Value="True"
Binding="{Binding Path=IsExpanded,
RelativeSource={RelativeSource
Mode=FindAncestor,
AncestorType={x:Type TreeViewItem},
AncestorLevel=2}}">
<Setter Property="IsExpanded" Value="True" />
</DataTrigger>
</Style.Triggers>
</Style>
</TreeView.ItemContainerStyle>
</TreeView>
这也不是:
<TreeView ItemsSource="{Binding}">
<TreeView.ItemContainerStyle>
<Style TargetType="TreeViewItem">
<Setter Property="IsExpanded"
Value="{Binding Path=IsExpanded,
RelativeSource={RelativeSource
Mode=FindAncestor,
AncestorType={x:Type TreeViewItem},
AncestorLevel=2}}" />
</Style>
</TreeView.ItemContainerStyle>
</TreeView>
这里少了什么
提前谢谢。这两个都适合我。如果使用静态
TreeViewItems
对其进行测试,请确保通过资源应用样式,ItemContainerStyle
仅与动态创建的容器相关。还要注意,用户交互可能会设置一个本地值,覆盖这些样式