我的Expander展开方向正确。这工作正常，但我希望内容仍然显示在扩展器按钮和标题下。另外我想让这些，按钮和标题，仍然出现在同一行。这样做的最佳方式是什么？
<Expander Header="Test" ExpandDirection="Right">
<ListBox VerticalAlignment="Top" MaxHeight="400" Name="lbxTest"/>
</Expander>
答案 0 :(得分：1)
您需要重新模板化整个Expander控件。您可以在Visual Studio或Blend中的设计模式下右键单击Expander，然后选择编辑模板 - >编辑副本将默认模板复制到XAML标记中，然后根据您的要求进行编辑： / p>
<Expander Header="Test" ExpandDirection="Right">
<Expander.Resources>
<SolidColorBrush x:Key="Expander.MouseOver.Circle.Stroke" Color="#FF5593FF"/>
<SolidColorBrush x:Key="Expander.MouseOver.Circle.Fill" Color="#FFF3F9FF"/>
<SolidColorBrush x:Key="Expander.MouseOver.Arrow.Stroke" Color="#FF000000"/>
<SolidColorBrush x:Key="Expander.Pressed.Circle.Stroke" Color="#FF3C77DD"/>
<SolidColorBrush x:Key="Expander.Pressed.Circle.Fill" Color="#FFD9ECFF"/>
<SolidColorBrush x:Key="Expander.Pressed.Arrow.Stroke" Color="#FF000000"/>
<SolidColorBrush x:Key="Expander.Disabled.Circle.Stroke" Color="#FFBCBCBC"/>
<SolidColorBrush x:Key="Expander.Disabled.Circle.Fill" Color="#FFE6E6E6"/>
<SolidColorBrush x:Key="Expander.Disabled.Arrow.Stroke" Color="#FF707070"/>
<SolidColorBrush x:Key="Expander.Static.Circle.Fill" Color="#FFFFFFFF"/>
<SolidColorBrush x:Key="Expander.Static.Circle.Stroke" Color="#FF333333"/>
<SolidColorBrush x:Key="Expander.Static.Arrow.Stroke" Color="#FF333333"/>
<Style x:Key="ExpanderRightHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid>
<Grid.LayoutTransform>
<TransformGroup>
<TransformGroup.Children>
<TransformCollection>
<RotateTransform Angle="-90"/>
</TransformCollection>
</TransformGroup.Children>
</TransformGroup>
</Grid.LayoutTransform>
<Ellipse x:Name="circle" Fill="{StaticResource Expander.Static.Circle.Fill}" HorizontalAlignment="Center" Height="19" Stroke="{StaticResource Expander.Static.Circle.Stroke}" VerticalAlignment="Center" Width="19"/>
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{StaticResource Expander.Static.Arrow.Stroke}" StrokeThickness="2" VerticalAlignment="Center"/>
</Grid>
<ContentPresenter HorizontalAlignment="Center" Margin="4,4,0,0" Grid.Column="1" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Stroke" TargetName="circle" Value="{StaticResource Expander.MouseOver.Circle.Stroke}"/>
<Setter Property="Fill" TargetName="circle" Value="{StaticResource Expander.MouseOver.Circle.Fill}"/>
<Setter Property="Stroke" TargetName="arrow" Value="{StaticResource Expander.MouseOver.Arrow.Stroke}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Stroke" TargetName="circle" Value="{StaticResource Expander.Pressed.Circle.Stroke}"/>
<Setter Property="StrokeThickness" TargetName="circle" Value="1.5"/>
<Setter Property="Fill" TargetName="circle" Value="{StaticResource Expander.Pressed.Circle.Fill}"/>
<Setter Property="Stroke" TargetName="arrow" Value="{StaticResource Expander.Pressed.Arrow.Stroke}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Stroke" TargetName="circle" Value="{StaticResource Expander.Disabled.Circle.Stroke}"/>
<Setter Property="Fill" TargetName="circle" Value="{StaticResource Expander.Disabled.Circle.Fill}"/>
<Setter Property="Stroke" TargetName="arrow" Value="{StaticResource Expander.Disabled.Arrow.Stroke}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Expander.Resources>
<Expander.Template>
<ControlTemplate TargetType="{x:Type Expander}">
<Border BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}"
CornerRadius="3" SnapsToDevicePixels="true">
<Grid>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<ToggleButton x:Name="HeaderSite" ContentTemplate="{TemplateBinding HeaderTemplate}" ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}" Content="{TemplateBinding Header}" Foreground="{TemplateBinding Foreground}" FontWeight="{TemplateBinding FontWeight}"
FontStyle="{TemplateBinding FontStyle}" FontStretch="{TemplateBinding FontStretch}"
FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}"
HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
Margin="1" MinWidth="0" MinHeight="0" Padding="{TemplateBinding Padding}"
Style="{StaticResource ExpanderRightHeaderStyle}"
VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
HorizontalAlignment="Left">
<ToggleButton.FocusVisualStyle>
<Style>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Border>
<Rectangle Margin="0" SnapsToDevicePixels="true" Stroke="Black" StrokeThickness="1" StrokeDashArray="1 2"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ToggleButton.FocusVisualStyle>
</ToggleButton>
<ContentPresenter x:Name="ExpandSite" Grid.Row="1" Focusable="false" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="Collapsed" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="true">
<Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Expander.Template>
<ListBox VerticalAlignment="Top" MaxHeight="400" Name="lbxTest"/>
</Expander>
不，没有更简单的方法：）
答案 1 :(得分：0)
This is a bit of Trick but can be done as under :
<Expander Header="Test" ExpandDirection="Right">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="25"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Button Content="Test" Grid.Row="1" Margin="-25,20,0,0" Height="25" Width="50" HorizontalAlignment="Left"/>
</Grid>
</Expander>
You need to give a negative margin for the left portion value.
Also you have to give margin for the top portion so that the header for the expander gets visible.
答案 2 :(得分：0)
除了修改模板之外，还可以选择分离组件并利用触发器。扩展器为空，触发器与显示内容的堆栈面板相关联。
示例：
<StackPanel Orientation="Horizontal" >
<Label Content="Filter Options">
<Label.Style>
<Style TargetType="{x:Type Label}" BasedOn="{StaticResource InlineLabel}">
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="TextBlock.TextDecorations" Value="Underline" />
</Style>
</Label.Style>
</Label>
<Expander Name="FilterExpander" IsExpanded="False" ExpandDirection="Right" />
<!-- This stack panel is the content to be displayed when expanded -->
<StackPanel Orientation="Horizontal">
<StackPanel.Style>
<Style TargetType="StackPanel">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=FilterExpander, Path=IsExpanded}" Value="True">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</StackPanel.Style>
<CheckBox x:Name="chkFilterApproved" Content="Approved" Margin="5 0" Style="{StaticResource InlineCheckbox}" IsChecked="{Binding FilterApproved}" />
<CheckBox x:Name="chkFilterOpen" Content="Open" Margin="5 0" Style="{StaticResource InlineCheckbox}" IsChecked="{Binding FilterOpen}" />
<CheckBox x:Name="chkFilterCompleted" Content="Completed" Margin="5 0" Style="{StaticResource InlineCheckbox}" IsChecked="{Binding FilterCompleted}"/>
</StackPanel>
<TextBox Style="{StaticResource EntryTextBox}" Tag="Enter search text" Margin="2" MinWidth="150"
Text="{Binding FilterSearch, UpdateSourceTrigger=PropertyChanged}"/>
</StackPanel>