我正在使用C＃和MVVM在Silverlight中设计一个应用程序。在其中一个页面上，我有一个图像（如在视觉中，而不是类型Image），它由几个Path组成。在这种情况下，他们形成一个面孔，我希望用户能够选择几个部分（眼睛，鼻子，耳朵......）。其中每个都是单独的Path。
这个想法是用户可以选择其中一个向量并使用它。我希望选择的那个改变颜色。
我可以将bool转换为所选颜色，这不是问题。问题是添加选择逻辑。
我的想法是将其包裹在ListBox中，修改ItemTemplate以包含Path，但此位置错误地修改了路径。即使在申请保证金等之后，我也无法正确理解。
有没有人对此有任何经验或指导？
提前致谢！
解答：
1）将ItemsPanel模板更改为您的容器：
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<Canvas Width="208"
Height="391" />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
2）设置ItemsSource：
这里的技巧是定位/附加属性仅适用于ListBox的直接子节点。在这种情况下，我使用Canvas.Top和Canvas.Left。解决方案是将每个Item包装在另一个ListBoxItem中，并在ListBoxItem上应用这些属性。 （如果你不这样做，这将默认发生。）
<ListBox>
<ListBoxItem Canvas.Left="10" Canvas.Top="5">
<Path Data="..." Height="200" Width="200" Fill="Black" />
</ListBoxItem>
</ListBox>
答案 0 :(得分：1)
尝试在绑定到ViewModel上的命令的MouseLeftButtonDown上设置Path事件处理程序。应该能够使用处理程序中的sender参数来确定要修改的Path。
对于ListBox方法，您是否尝试修改ItemsPanel并使用Canvas？
答案 1 :(得分：1)
如果我理解正确，您可以使用VisualStateManager为FocusStates添加VisualStateGroup，就像您在标准按钮上看到的那样，将不同的Fill或Border应用于所选路径。基本上你会让每条路径都像按钮控件那样根据其焦点显示不同的视觉状态。
（将此示例更改为默认复选框模板作为示例）如果您需要，我可以举例。
<Style TargetType="CheckBox" x:Key="DefaultCheckBoxStyle">
<Setter Property="FontFamily" Value="{StaticResource ContentFontFamily}"/>
<Setter Property="FontSize" Value="{StaticResource ContentFontSize}"/>
<Setter Property="Background" Value="{StaticResource NormalBrush}"/>
<Setter Property="Foreground" Value="{StaticResource TextContentBrush}"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Padding" Value="4,1,0,0"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Value="{StaticResource NormalBorderBrush}" Property="BorderBrush"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="CheckBox">
<Grid x:Name="grid" RenderTransformOrigin="0.5,0.5">
<Grid.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Grid.RenderTransform>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualStateGroup.Transitions>
<VisualTransition From="Normal" GeneratedDuration="0:0:0.01" To="MouseOver">
<VisualTransition.GeneratedEasingFunction>
<ExponentialEase EasingMode="EaseIn" Exponent="7"/>
</VisualTransition.GeneratedEasingFunction>
</VisualTransition>
<VisualTransition From="MouseOver" GeneratedDuration="0:0:0.1" To="Normal">
<VisualTransition.GeneratedEasingFunction>
<CircleEase EasingMode="EaseIn"/>
</VisualTransition.GeneratedEasingFunction>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="MouseOverRectangleFill" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="1.0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="PressedBorder" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="1.0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" Storyboard.TargetName="grid">
<EasingDoubleKeyFrame KeyTime="0:0:0.1" Value="1.05"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)" Storyboard.TargetName="grid">
<EasingDoubleKeyFrame KeyTime="0:0:0.1" Value="1.05"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="contentPresenter" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0.3"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="DisabledVisualElement" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="1.0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CheckStates">
<VisualState x:Name="Checked">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="CheckIcon">
<SplineDoubleKeyFrame KeyTime="0" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="CheckedRectangle" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0.6"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unchecked"/>
<VisualState x:Name="Indeterminate">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="IndeterminateIcon">
<SplineDoubleKeyFrame KeyTime="0" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="IndeterminateRectangle" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0.6"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ContentFocusVisualElement">
<SplineDoubleKeyFrame KeyTime="0" Value="1"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused"/>
</VisualStateGroup>
<VisualStateGroup x:Name="ValidationStates">
<VisualState x:Name="Valid"/>
<VisualState x:Name="InvalidUnfocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="ValidationErrorElement">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="InvalidFocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="ValidationErrorElement">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="IsOpen" Storyboard.TargetName="validationTooltip">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<System:Boolean>True</System:Boolean>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="21"/>
</Grid.ColumnDefinitions>
<Grid HorizontalAlignment="Right" VerticalAlignment="Top" Grid.Column="1" Margin="5,0,0,0">
<Grid Width="16" Height="16">
<Rectangle x:Name="Background" Fill="{StaticResource BlankBackgroundBrush}" StrokeThickness="{TemplateBinding BorderThickness}" Stroke="{StaticResource BaseBrush7}" />
<Rectangle x:Name="BackgroundInner" Fill="{TemplateBinding Background}" Margin="1" StrokeThickness="{TemplateBinding BorderThickness}" Stroke="{TemplateBinding BorderBrush}"/>
<Rectangle x:Name="MouseOverRectangleFill" Fill="{StaticResource MouseOverBrush}" StrokeThickness="2" Opacity="0" Margin="3"/>
<Rectangle x:Name="MouseOverRectangle" StrokeThickness="2" Stroke="{StaticResource MouseOverBrush}" Opacity="0"/>
<Border x:Name="PressedBorder" BorderThickness="1" BorderBrush="{StaticResource MouseOverBrush}" Opacity="0" />
<Rectangle x:Name="ContentFocusVisualElement" StrokeThickness="1" IsHitTestVisible="false" Opacity="0" Stroke="{StaticResource FocusedBrush}" />
<Rectangle x:Name="DisabledVisualElement" Fill="{StaticResource DisabledBackgroundBrush}" Stroke="{StaticResource DisabledBackgroundBrush}" Opacity="0" RadiusY="1" RadiusX="1" />
<Rectangle x:Name="CheckedRectangle" StrokeThickness="0.5" Stroke="{StaticResource BaseBrush4}" Opacity="0" RadiusX="0.5" RadiusY="0.5"/>
<Path x:Name="CheckIcon" Data="M335.69366,107.11728 L339,111.375 347.09859,99.975309" HorizontalAlignment="Center" Stretch="Fill" Stroke="{StaticResource BaseBrush4}" UseLayoutRounding="False" VerticalAlignment="Center" StrokeThickness="2" StrokeStartLineCap="Round" StrokeEndLineCap="Round" Margin="3.5" Opacity="0"/>
<Rectangle x:Name="IndeterminateRectangle" StrokeThickness="2" Stroke="{StaticResource BaseBrush4}" Opacity="0"/>
<Rectangle x:Name="IndeterminateIcon" Fill="{StaticResource BaseBrush3}" Height="2" Opacity="0" Width="6"/>
<Border x:Name="ValidationErrorElement" BorderBrush="{StaticResource ControlsValidationBrush}" BorderThickness="1" CornerRadius="1" Margin="1" ToolTipService.PlacementTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Visibility="Collapsed">
<ToolTipService.ToolTip>
<ToolTip x:Name="validationTooltip" DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" PlacementTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Template="{StaticResource ValidationToolTipTemplate}">
<ToolTip.Triggers>
<EventTrigger RoutedEvent="Canvas.Loaded">
<BeginStoryboard>
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="IsHitTestVisible" Storyboard.TargetName="validationTooltip">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<System:Boolean>true</System:Boolean>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ToolTip.Triggers>
</ToolTip>
</ToolTipService.ToolTip>
<Grid Background="Transparent" HorizontalAlignment="Right" Height="10" Margin="0,-4,-4,0" VerticalAlignment="Top" Width="10">
<Path Data="M 1,0 L5,0 A 2,2 90 0 1 7,2 L7,6 z" Fill="{StaticResource ValidationBrush5}" Margin="0,3,0,0"/>
<Path Data="M 0,0 L2,0 L 7,5 L7,7" Fill="{StaticResource BlankBackgroundBrush}" Margin="0,3,0,0"/>
</Grid>
</Border>
</Grid>
</Grid>
<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
答案 2 :(得分：0)
使用解决方案更新了我的问题，再次发布，以便我将其标记为已回答：
<强>解答：
1）将ItemsPanel模板更改为您的容器：
Result:
id|name|fid|id|descrip| fid
1 |A |1 |1|DA | 1
2 |B |1 |2|DB | 1
2 |B |1 |
2）设置ItemsSource：
这里的技巧是定位/附加属性仅适用于ListBox的直接子节点。在这种情况下，我使用Canvas.Top和Canvas.Left。解决方案是将每个Item包装在另一个ListBoxItem中，并在ListBoxItem上应用这些属性。 （如果你不这样做，这将默认发生。）
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