我正在将应用程序从Windows Phone 7移植到Windows Phone 8，并且遇到PathListBox控件的一些问题。
这是XAML：
<Grid x:Name="LayoutRoot" Background="{StaticResource PhoneChromeBrush}">
<Path x:Name="path" Data="M58,382 C59,378 67,156 162,216 C257,276 268,381 325,268 C382,155 470,188 345,107.999 C220,27.9988 191,-10.0014 51,46.9988 C-89,103.999 -106,203.999 18,185.999 C142,167.999 108,105.999 179,130.999" HorizontalAlignment="Left" Height="363.298" Margin="4.98,54.202,0,0" Stretch="Fill" Stroke="Red" UseLayoutRounding="False" VerticalAlignment="Top" Width="475.02" StrokeThickness="3"/>
<mec:PathListBox HorizontalAlignment="Left" Height="100" VerticalAlignment="Top" Width="100">
<mec:PathListBox.LayoutPaths>
<mec:LayoutPath SourceElement="{Binding ElementName=path}"/>
</mec:PathListBox.LayoutPaths>
<mec:PathListBoxItem Content="PathListBoxItem" HorizontalAlignment="Left" Height="24" VerticalAlignment="Top" Width="100"/>
<mec:PathListBoxItem Content="PathListBoxItem" HorizontalAlignment="Left" Height="24" VerticalAlignment="Top" Width="100"/>
<mec:PathListBoxItem Content="PathListBoxItem" HorizontalAlignment="Left" Height="24" VerticalAlignment="Top" Width="100"/>
<mec:PathListBoxItem Content="PathListBoxItem" HorizontalAlignment="Left" Height="24" VerticalAlignment="Top" Width="100"/>
</mec:PathListBox>
</Grid>
PathListBoxItems不像在WPF，Silverlight和Windows Phone 7中那样跟踪路径。给出了什么？
没有编译错误或警告，visual studio 2012没有给我任何警告。在Blend 5的属性面板的LayoutPaths列表中，删除“ - ”按钮旁边的“路径”项上有一个黄色警告符号。使用鼠标悬停图标时的工具提示状态：
此对象不存在或是此PathListBox的后代。
考虑到我提供的XAML，这似乎并不正确。
我用矩形，椭圆和海峡线试过这个。我已经改变了它们的声明顺序。没关系，Blend 5总是给我同样的小警告。有没有其他人在使用Windows Phone 8 PathListBox？
答案 0 :(得分：0)
如果你使用代码而不是xaml似乎效果更好，但即便如此，它仍然会忽略一些设置;
private PathListBox AttachPathListBoxToShape(ViewModel viewModel, IEnumerable itemSource, Shape shape, string dataTemplateKey, string itemsPanelTemplateKey)
{
DataTemplate dataTemplate = (DataTemplate)Application.Current.Resources[dataTemplateKey];
ItemsPanelTemplate itemsPanelTemplate = (ItemsPanelTemplate)Application.Current.Resources[itemsPanelTemplateKey];
PathListBox dynoListBox = new PathListBox();
dynoListBox.ItemsSource = itemSource;
dynoListBox.ItemTemplate = dataTemplate;
dynoListBox.ItemsPanel = itemsPanelTemplate;
LayoutPath dynoPath = new LayoutPath();
dynoPath.SourceElement = shape;
dynoPath.Distribution = Distribution.Even;
dynoPath.Orientation = Microsoft.Expression.Controls.Orientation.OrientToPath;
dynoListBox.LayoutPaths.Add(dynoPath);
return dynoListBox;
}
答案 1 :(得分：0)
我最了不起。 wp8变体缺少控件模板。我将itemcontainer样式从wp7复制到wp8应用程序的本地资源中，它现在似乎正在运行;
<phone:PhoneApplicationPage.Resources>
<Style x:Key="PathListBoxStyle1" TargetType="mec:PathListBox">
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="UseLayoutRounding" Value="False"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<mec:PathPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="mec:PathListBox">
<Grid>
<!--
<VisualStateManager.VisualStateGroups>
<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>
-->
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="2" Padding="{TemplateBinding Padding}">
<ItemsPresenter/>
</Border>
<!--
<Border x:Name="ValidationErrorElement" BorderBrush="#FFDB000C" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="2" 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 L6,0 A 2,2 90 0 1 8,2 L8,7 z" Fill="#FFDC000C" Margin="-1,3,0,0"/>
<Path Data="M 0,0 L2,0 L 8,6 L8,8" Fill="#ffffff" Margin="-1,3,0,0"/>
</Grid>
</Border>
-->
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<DataTemplate x:Key="DataTemplate1">
<Grid>
<TextBlock Text="{Binding Name}" />
<TextBlock Text="{Binding ElementName, RelativeSource={RelativeSource Mode=TemplatedParent}}" />
</Grid>
</DataTemplate>
<ItemsPanelTemplate x:Key="ItemsPanelTemplate1">
<mec:PathPanel/>
</ItemsPanelTemplate>
<mec:IsArrangedToScaleConverter x:Key="IsArrangedToScaleConverter"/>
<Style x:Key="PathListBoxItemStyle1" TargetType="mec:PathListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="mec:PathListBoxItem">
<Grid Background="{TemplateBinding Background}" RenderTransformOrigin="0.5,0.5">
<Grid.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleY="{Binding IsArranged, Converter={StaticResource IsArrangedToScaleConverter}, RelativeSource={RelativeSource TemplatedParent}}" ScaleX="{Binding IsArranged, Converter={StaticResource IsArrangedToScaleConverter}, RelativeSource={RelativeSource TemplatedParent}}"/>
<SkewTransform/>
<RotateTransform Angle="{Binding OrientationAngle, RelativeSource={RelativeSource TemplatedParent}}"/>
<TranslateTransform/>
</TransformGroup>
</Grid.RenderTransform>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<DoubleAnimation Duration="0" To=".35" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="fillColor"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To=".55" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="contentPresenter"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Duration="0" To=".75" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="fillColor2"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="FocusVisualElement">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle x:Name="fillColor" Fill="#FFBADDE9" IsHitTestVisible="False" Opacity="0" RadiusY="1" RadiusX="1"/>
<Rectangle x:Name="fillColor2" Fill="#FFBADDE9" IsHitTestVisible="False" Opacity="0" RadiusY="1" RadiusX="1"/>
<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}"/>
<Rectangle x:Name="FocusVisualElement" RadiusY="1" RadiusX="1" Stroke="#FF6DBDD1" StrokeThickness="1" Visibility="Collapsed"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources>
使用它;
<mec:PathListBox x:Name="MyPathListBox" HorizontalAlignment="Left"
Height="100"
VerticalAlignment="Top"
Width="100"
Style="{StaticResource PathListBoxStyle1}"
ItemContainerStyle="{StaticResource PathListBoxItemStyle1}"
ItemsSource="{Binding Items}"
>
<mec:PathListBox.ItemTemplate>
<DataTemplate>
<Grid>
<TextBlock>bla</TextBlock>
</Grid>
</DataTemplate>
</mec:PathListBox.ItemTemplate>
<mec:PathListBox.LayoutPaths>
<mec:LayoutPath Orientation="OrientToPath" SourceElement="{Binding ElementName=path}" />
</mec:PathListBox.LayoutPaths>
</mec:PathListBox>