[已解决] Silverlight.ToolKit.DataVisualization数据点工具提示中的绑定 [英] [SOLVED] Binding in Silverlight.ToolKit.DataVisualization Datapoint Tooltip

问题描述

我正在使用Silverlight Toolkit中的DataVisualization命名空间.我试图弄清楚如何创建自定义工具提示.我已经覆盖了数据点模板，并且我知道该在哪里做我想做的事情，但不知道该怎么做.

本质上，我想显示系列标题，FormattedIndependentValue(数据点的X轴标签)和数据点值.我唯一不知道如何到达的是系列名称.

模板的重要部分在这里:

I''m using the DataVisualization namespace in the Silverlight Toolkit. I''m trying to figure out how to create a custom tooltip. I''ve overridden the datapoint template, and I know where to do what I want to do, but not exactly how to go about doing it.

Essentially, I want to show the series title, the FormattedIndependentValue (X-Axis label for the datapoint), and the datapoint value. The only thing I don''t know how to get to is the series title.

The part of the template that matters is here:

<ToolTipService.ToolTip>
    <StackPanel>
 
        <ContentControl Content="{Binding ????????}" />
 
        <ContentControl Content="{TemplateBinding FormattedIndependentValue}" />
        <ContentControl Content="{Binding Value, Converter={StaticResource DataValueConverter}}" />
    </StackPanel>
</ToolTipService.ToolTip>

我的问题是要为"???????"所示的ContentControl绑定什么?

图表包含系列的集合，每个系列都包含数据点的集合.数据点模板包含上面显示的工具提示XAML.

我想要的属性是mainChart.Series[n].Title.如何到达那里?

My question is what to bind to for the ContentControl shown by the "???????"?

The chart contains a collection of Series, each of which contains a collection of datapoints. The datapoint template contains the tooltip XAML shown above.

The property I''m after is mainChart.Series[n].Title. How do I get there?

推荐答案

2011/01/17 08:00(解决方案)
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注意力！请不要删除它，因为我正在测试Codeproject网站
有关发布针对您自己的问题的解决方案的功能.许多
谢谢.
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好吧，我找不到任何可以让我那样做的东西，所以我在DataPointSeries项中添加了一个名为ParentChartSeries的属性，在创建系列后，我在自己的方法中调用了一个方法设置此属性的页面，如下所示:

01/17/2011 08:00 (SOLUTION)
===========================================================================
ATTENTION! Please do not delete this as I am testing Codeproject site
functionality regarding posting solutions to your own questions. Many
thanks.
===========================================================================

Well, I haven''t been able to find anything that will let me do it that way, so I added a property to the DataPointSeries items called ParentChartSeries, and after the series is created, I call a method in my page that sets this property, like so:

foreach (DBSeriesDataItem item in series.ItemsSource)
{
   item.ParentChartSeries = series;
}

之后，我可以在XAML中执行此操作:

After that, I could do this in the XAML:

<ContentControl Content="{Binding ParentChartSeries, Converter={StaticResource TooltipTitleConverter}}" /> 

这是XAML中定义的TooltipTitleConverter:

Here''s the TooltipTitleConverter defined in the XAML:

<local:BudgetPanelBase.Resources>
    <local:TooltipTitleConverter x:Key="TooltipTitleConverter" />
</local:BudgetPanelBase.Resources>

最后，转换器的代码:

And finally, the code for the converter:

public class TooltipTitleConverter : IValueConverter
{
//-------------------------------------------------------------------------
public object Convert(Object value, System.Type targetType, Object parameter, System.Globalization.CultureInfo culture)
{
    Label label = null;
    if (value != null)
    {
        MSChart.DataPointSeries series = value as MSChart.DataPointSeries;
        label = new Label();
        label.Content = series.Title;
    }
    return obj;
}
 
//-------------------------------------------------------------------------
public object ConvertBack(Object value, System.Type targetType, Object parameter, System.Globalization.CultureInfo culture)
{
    return value;
}

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