WPF树视图，右对齐值

本文介绍了WPF树视图，右对齐值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有我的WPF TreeView的一个问题。它的code是这样的：

I have a problem with my wpf treeview. It's code goes like this:

<TreeView ItemsSource="{Binding Path=Items}" Grid.RowSpan="2" Grid.ColumnSpan="2"> <TreeView.Resources> <HierarchicalDataTemplate DataType="{x:Type m:MyTreeItem}" ItemsSource="{Binding Items}"> <DockPanel LastChildFill="True"> <TextBlock Text="{Binding Path=Value}" DockPanel.Dock="Right"/> <TextBlock Text="{Binding Path=Display}" DockPanel.Dock="Left"/> </DockPanel> </HierarchicalDataTemplate> </TreeView.Resources> </TreeView>

在哪里MyTreeItem是一个简单的类2串特性（显示和值）和MyTreeItem的列表，名为项目。

Where MyTreeItem is a simple class with 2 String properties (Display and Value) and a List of MyTreeItem called Items.

我需要的树视图显示靠右的所有价值，同时保持项目显示，树制表基于它的深沉。

I need the tree view to display all 'Values' aligned to the right, while maintaining the tree tabulation of the items 'Display', based on it's deepth.

我已经tryed到DockPanel中设置为一个固定的宽度，但没有奏效。

I have tryed to set the dockPanel to a fixed width, but that didn't work.

我想这样做没有任何C＃code，只是XAML。

I want to do this without any c# code, just xaml.

在此先感谢。

推荐答案

如果我正确地理解你的问题，你想伸展树型视图和调整值的权利。要获得树型视图 s到拉伸Horizo​​ntaly你需要编辑模板树型视图。该问题是在这里解释：的leecampbell.blogspot/2009/01/horizontal-stretch-on-treeviewitems.html

If I understand your question correctly you want to Stretch the TreeViewItems and align Value to the right. To get the TreeViewItems to Stretch Horizontaly you'll need to edit the Template for TreeViewItem. The problem is explained here: leecampbell.blogspot/2009/01/horizontal-stretch-on-treeviewitems.html

下面是一个编辑的版本的树型视图它做到这一点。请注意，您必须添加一个引用为 presentationFramework.Aero 这个工作

Here is an edited version of the TreeViewItem which does this. Note that you'll have to add a reference to PresentationFramework.Aero for this to work

示例的

Sample

<TreeView ItemsSource="{Binding Path=Items}" Grid.RowSpan="2" Grid.ColumnSpan="2" ItemContainerStyle="{StaticResource StretchTreeViewItemStyle}"> <TreeView.Resources> <HierarchicalDataTemplate DataType="{x:Type m:MyTreeItem}" ItemsSource="{Binding Items}"> <DockPanel LastChildFill="True"> <TextBlock Text="{Binding Path=Value}" DockPanel.Dock="Right"/> <TextBlock Text="{Binding Path=Display}" DockPanel.Dock="Left"/> </DockPanel> </HierarchicalDataTemplate> </TreeView.Resources> </TreeView>

StretchTreeViewItemStyle

<Style x:Key="TreeViewItemFocusVisual"> <Setter Property="Control.Template"> <Setter.Value> <ControlTemplate> <Rectangle/> </ControlTemplate> </Setter.Value> </Setter> </Style> <PathGeometry x:Key="TreeArrow" Figures="M0,0 L0,6 L6,0 z"/> <Style x:Key="ExpandCollapseToggleStyle" TargetType="{x:Type ToggleButton}"> <Setter Property="Focusable" Value="False"/> <Setter Property="Width" Value="16"/> <Setter Property="Height" Value="16"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ToggleButton}"> <Border Background="Transparent" Height="16" Padding="5,5,5,5" Width="16"> <Path x:Name="ExpandPath" Data="{StaticResource TreeArrow}" Fill="Transparent" Stroke="#FF989898"> <Path.RenderTransform> <RotateTransform Angle="135" CenterY="3" CenterX="3"/> </Path.RenderTransform> </Path> </Border> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Stroke" TargetName="ExpandPath" Value="#FF1BBBFA"/> <Setter Property="Fill" TargetName="ExpandPath" Value="Transparent"/> </Trigger> <Trigger Property="IsChecked" Value="True"> <Setter Property="RenderTransform" TargetName="ExpandPath"> <Setter.Value> <RotateTransform Angle="180" CenterY="3" CenterX="3"/> </Setter.Value> </Setter> <Setter Property="Fill" TargetName="ExpandPath" Value="#FF595959"/> <Setter Property="Stroke" TargetName="ExpandPath" Value="#FF262626"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> <Style x:Key="StretchTreeViewItemStyle" TargetType="{x:Type TreeViewItem}" xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"> <Setter Property="Background" Value="Transparent"/> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> <Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/> <Setter Property="Padding" Value="1,0,0,0"/> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/> <Setter Property="FocusVisualStyle" Value="{StaticResource TreeViewItemFocusVisual}"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type TreeViewItem}"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition MinWidth="19" Width="Auto"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition/> </Grid.RowDefinitions> <ToggleButton x:Name="Expander" ClickMode="Press" IsChecked="{Binding IsExpanded, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ExpandCollapseToggleStyle}"/> <Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="1" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true"> <ContentPresenter x:Name="PART_Header" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> </Border> <ItemsPresenter x:Name="ItemsHost" Grid.Column="1" Grid.Row="1"/> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsExpanded" Value="false"> <Setter Property="Visibility" TargetName="ItemsHost" Value="Collapsed"/> </Trigger> <Trigger Property="HasItems" Value="false"> <Setter Property="Visibility" TargetName="Expander" Value="Hidden"/> </Trigger> <Trigger Property="IsSelected" Value="true"> <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/> </Trigger> <MultiTrigger> <MultiTrigger.Conditions> <Condition Property="IsSelected" Value="true"/> <Condition Property="IsSelectionActive" Value="false"/> </MultiTrigger.Conditions> <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/> </MultiTrigger> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> <Style.Triggers> <Trigger Property="VirtualizingStackPanel.IsVirtualizing" Value="true"> <Setter Property="ItemsPanel"> <Setter.Value> <ItemsPanelTemplate> <VirtualizingStackPanel/> </ItemsPanelTemplate> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style>