默认情况下，在应用程序中实现 ExpanderView 控件时，UI 渲染并且 expanderView 控件有一个左侧边距应用于它，一些缩进。这是相当愚蠢的，默认情况下就是这样。
有没有办法消除那个边距，让控件完全浮动到左边？
另外，如何在展开器矩形中添加一些文本？没有这样的属性可用。
移除 ExpanderView 中的左侧边距/内边距
12
- user818700
3
我尝试使用负边距，这样确实起作用了。但是扩展器完全停止工作了... - user818700
你假设你的答案对我有效。我还没有测试你给出的解决方案，但我已经授予了你赏金。 - user818700
如果您的问题没有得到答案，那么不需要授予任何奖励。这样做是没有意义的。 - Chris W.
2个回答
13
您只需编辑展开器的控件模板。如果您拥有Expression Blend，它会使这一过程变得快捷和简单。您只需在画板上右键单击“展开器”，选择“编辑模板”，然后选择要编辑当前模板或者可以制作副本并放入单独的资源字典中。以下是一个示例模板。 请注意itemsCanvas底部的11,0,0,0边距？ 您可以使用相同的方法来编辑几乎任何控件的模板. :)
<Style x:Key="ExpanderViewStyle1" TargetType="toolkit:ExpanderView">
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<StackPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="toolkit:ExpanderView">
<Grid>
<Grid.Resources>
<QuadraticEase x:Key="QuadraticEaseOut" EasingMode="EaseOut"/>
<QuadraticEase x:Key="QuadraticEaseInOut" EasingMode="EaseInOut"/>
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="41"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="ExpansionStates">
<VisualStateGroup.Transitions>
<VisualTransition From="Collapsed" GeneratedDuration="0:0:0.15" To="Expanded">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseOut}" KeyTime="0:0:0.00" Value="0"/>
<EasingDoubleKeyFrame x:Name="CollapsedToExpandedKeyFrame" EasingFunction="{StaticResource QuadraticEaseOut}" KeyTime="0:0:0.15" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ItemsCanvas"/>
</Storyboard>
</VisualTransition>
<VisualTransition From="Expanded" GeneratedDuration="0:0:0.15" To="Collapsed">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame x:Name="ExpandedToCollapsedKeyFrame" EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.00" Value="1"/>
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.15" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.00" Value="1.0"/>
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.15" Value="0.0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.TranslateY)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.00" Value="0.0"/>
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.15" Value="-35"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="Collapsed"/>
<VisualState x:Name="Expanded">
<Storyboard>
<DoubleAnimation Duration="0" Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ItemsCanvas"/>
<DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ItemsCanvas"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ExpandabilityStates">
<VisualState x:Name="Expandable"/>
<VisualState x:Name="NonExpandable">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="ExpandableContent">
<DiscreteObjectKeyFrame KeyTime="0:0:0.0" Value="Collapsed"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="Line">
<DiscreteObjectKeyFrame KeyTime="0:0:0.0" Value="Collapsed"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="NonExpandableContent">
<DiscreteObjectKeyFrame KeyTime="0:0:0.0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ListBoxItem x:Name="ExpandableContent" Grid.ColumnSpan="2" Grid.Column="0" toolkit:TiltEffect.IsTiltEnabled="True" Grid.Row="0" Grid.RowSpan="2">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="41"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ContentControl x:Name="Header" Grid.ColumnSpan="2" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Grid.Column="0" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Grid.Row="0"/>
<ContentControl x:Name="Expander" ContentTemplate="{TemplateBinding ExpanderTemplate}" Content="{TemplateBinding Expander}" Grid.Column="1" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Margin="11,0,0,0" Grid.Row="1"/>
<Grid x:Name="ExpanderPanel" Background="Transparent" Grid.ColumnSpan="2" Grid.Column="0" Grid.Row="0" Grid.RowSpan="2"/>
</Grid>
</ListBoxItem>
<Line x:Name="Line" Grid.Column="1" HorizontalAlignment="Left" Grid.Row="1" Grid.RowSpan="2" Stretch="Fill" Stroke="{StaticResource PhoneSubtleBrush}" StrokeThickness="3" X1="0" X2="0" Y1="0" Y2="1"/>
<ContentControl x:Name="NonExpandableContent" Grid.ColumnSpan="2" ContentTemplate="{TemplateBinding NonExpandableHeaderTemplate}" Content="{TemplateBinding NonExpandableHeader}" Grid.Column="0" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Grid.Row="0" Grid.RowSpan="2" Visibility="Collapsed"/>
<Canvas x:Name="ItemsCanvas" Grid.Column="1" Margin="11,0,0,0" Opacity="0.0" Grid.Row="2">
<Canvas.RenderTransform>
<CompositeTransform TranslateY="0.0"/>
</Canvas.RenderTransform>
<ItemsPresenter x:Name="Presenter"/>
</Canvas>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
不管怎样，一旦找到控件模板，就变得快捷而且轻松。希望这能帮到您！
- Chris W.
0
虽然已经很晚了，但也许对某些人有所帮助。我在这个样式中去掉了那个边距。我从默认网格中删除了列。此外，我将其创建为Wrap面板。可以在ItemsPanelTemplate中进行修改。
<Style x:Key="ExpanderViewStyle" TargetType="toolkit:ExpanderView">
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<toolkit:WrapPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="toolkit:ExpanderView">
<Grid>
<Grid.Resources>
<QuadraticEase x:Key="QuadraticEaseOut" EasingMode="EaseOut"/>
<QuadraticEase x:Key="QuadraticEaseInOut" EasingMode="EaseInOut"/>
</Grid.Resources>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="ExpansionStates">
<VisualStateGroup.Transitions>
<VisualTransition From="Collapsed" GeneratedDuration="0:0:0.15" To="Expanded">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseOut}" KeyTime="0:0:0.00" Value="0"/>
<EasingDoubleKeyFrame x:Name="CollapsedToExpandedKeyFrame" EasingFunction="{StaticResource QuadraticEaseOut}" KeyTime="0:0:0.15" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ItemsCanvas"/>
</Storyboard>
</VisualTransition>
<VisualTransition From="Expanded" GeneratedDuration="0:0:0.15" To="Collapsed">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame x:Name="ExpandedToCollapsedKeyFrame" EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.00" Value="1"/>
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.15" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.00" Value="1.0"/>
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.15" Value="0.0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.TranslateY)" Storyboard.TargetName="ItemsCanvas">
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.00" Value="0.0"/>
<EasingDoubleKeyFrame EasingFunction="{StaticResource QuadraticEaseInOut}" KeyTime="0:0:0.15" Value="-35"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="Collapsed">
<Storyboard>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ItemsCanvas"/>
<DoubleAnimation Duration="0" To="0.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ItemsCanvas"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Expanded">
<Storyboard>
<DoubleAnimation Duration="0" Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ItemsCanvas"/>
<DoubleAnimation Duration="0" To="1.0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ItemsCanvas"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ExpandabilityStates">
<VisualState x:Name="Expandable"/>
<VisualState x:Name="NonExpandable">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="ExpandableContent">
<DiscreteObjectKeyFrame KeyTime="0:0:0.0" Value="Collapsed"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="NonExpandableContent">
<DiscreteObjectKeyFrame KeyTime="0:0:0.0" Value="Visible"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ListBoxItem x:Name="ExpandableContent" toolkit:TiltEffect.IsTiltEnabled="True" Grid.Row="0" Grid.RowSpan="2">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ContentControl x:Name="Header" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Grid.Row="0"/>
<ContentControl x:Name="Expander" ContentTemplate="{TemplateBinding ExpanderTemplate}" Content="{TemplateBinding Expander}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Grid.Row="1"/>
<Grid x:Name="ExpanderPanel" Background="Transparent" Grid.Row="0" Grid.RowSpan="2"/>
</Grid>
</ListBoxItem>
<ContentControl x:Name="NonExpandableContent" ContentTemplate="{TemplateBinding NonExpandableHeaderTemplate}" Content="{TemplateBinding NonExpandableHeader}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Grid.Row="0" Grid.RowSpan="2" Visibility="Collapsed"/>
<Canvas x:Name="ItemsCanvas" Opacity="0.0" Grid.Row="2">
<Canvas.RenderTransform>
<CompositeTransform TranslateY="0.0"/>
</Canvas.RenderTransform>
<ItemsPresenter x:Name="Presenter"/>
</Canvas>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
- darson1991
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