silverlight - 删除(折叠) LineSeries 中的数据点？

Question

我想从 Silverlight 图表中的 LineSeries 中删除数据点标记。我在网上找到的唯一方法是将 VisibilityProperty 设置为 Collapse。

//不适用于当前的 SL 工具包版本
var collapseDataPointSetter = new Setter(Control.VisibilityProperty, Visibility.Collapsed);

但这不适用于当前版本的 SL 工具包。如何在当前版本中删除或隐藏 DataPoint 标记？

Answer 1

潘塔黑，

使用以下图表样式(带有引用模板)隐藏数据点。我已经包含了 LineSeries 和 AreaSeries 的样式。

祝你好运，吉姆

<ControlTemplate x:Key="CommonAreaSeriesDataPointTemplate" TargetType="charting:AreaDataPoint">
    <!--Comment out data points from the default template; just an empty template-->
    <Grid x:Name="Root" Opacity="1">
        <!--<ToolTipService.ToolTip>
            <StackPanel Margin="2,2,2,2">
                <ContentControl Content="{TemplateBinding FormattedDependentValue}" />
                <ContentControl Content="{TemplateBinding FormattedIndependentValue}" />
            </StackPanel>
        </ToolTipService.ToolTip>
        <Ellipse StrokeThickness="{TemplateBinding BorderThickness}" Stroke="{TemplateBinding BorderBrush}" Fill="{TemplateBinding Background}" />-->
    </Grid>
</ControlTemplate>
<Style x:Key="CommonAreaSeriesDataPoint" TargetType="charting:AreaDataPoint">
    <Setter Property="Background" Value="{StaticResource CommonAreaSeriesBackground}" />
    <Setter Property="Template" Value="{StaticResource CommonAreaSeriesDataPointTemplate}" />
</Style>
<Style x:Key="CommonAreaSeriesPath" TargetType="Path">
    <Setter Property="StrokeThickness" Value="1" />
    <Setter Property="Stroke" Value="DarkGray" />
    <Setter Property="Effect" Value="{StaticResource DialogDropShadow}" />
</Style>
<ControlTemplate x:Key="CommonLineSeriesDataPointTemplate" TargetType="charting:LineDataPoint">
    <!--Comment out data points from the default template; just an empty template-->
    <Grid x:Name="Root" Opacity="1">
        <!--<ToolTipService.ToolTip>
            <StackPanel Margin="2,2,2,2">
                <ContentControl Content="{TemplateBinding FormattedDependentValue}" />
                <ContentControl Content="{TemplateBinding FormattedIndependentValue}" />-->
        <!--Example of how to access the bound business object-->
        <!--<ContentControl Content="{Binding Amount}" DataContext="{TemplateBinding DataContext}" />-->
        <!--</StackPanel>
        </ToolTipService.ToolTip>-->
        <!--<Ellipse StrokeThickness="{TemplateBinding BorderThickness}" Stroke="{TemplateBinding BorderBrush}" Fill="{TemplateBinding Background}" />-->
    </Grid>
</ControlTemplate>
<Style x:Key="CommonLineSeriesDataPoint" TargetType="charting:LineDataPoint">
    <Setter Property="IndependentValueStringFormat" Value="{}{0:yyyy}" />
    <Setter Property="DependentValueStringFormat" Value="{}{0:c0}" />
    <Setter Property="Background" Value="#FF0077CC" />
    <Setter Property="BorderBrush" Value="White" />
    <Setter Property="BorderThickness" Value="2" />
    <Setter Property="IsTabStop" Value="False" />
    <Setter Property="Template" Value="{StaticResource CommonLineSeriesDataPointTemplate}" />
</Style>
<Style x:Key="CommonLineSeriesPolyline" TargetType="Polyline">
    <Setter Property="StrokeThickness" Value="5" />
    <Setter Property="Effect" Value="{StaticResource DialogDropShadow}" />
</Style>
<!-- Implicit non-Key'd Styles BasedOn Common Explicit Key'd Styles above -->
<Style TargetType="charting:AreaSeries">
    <Setter Property="DataPointStyle" Value="{StaticResource CommonAreaSeriesDataPoint}" />
    <Setter Property="PathStyle" Value="{StaticResource CommonAreaSeriesPath}" />
</Style>
<Style TargetType="charting:LineSeries">
    <Setter Property="DataPointStyle" Value="{StaticResource CommonLineSeriesDataPoint}" />
    <Setter Property="PolylineStyle" Value="{StaticResource CommonLineSeriesPolyline}" />
</Style>