WPF 工具包图表和 IndependentValueBinding、IndependentValuePath

发布于 2024-09-04 17:41:35 字数 1330 浏览 6 评论 0原文

我遇到了 WPF 工具包中的图表引擎的问题。

我尚未将数据移动到正确的对象模型,因此 ItemSourceDataView 支持。

第一次尝试

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}"  
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValueBinding="{Binding Path=TargetSeries_X}" 
  DependentValueBinding="{Binding Path=TargetSeries_X}" />

这会崩溃,因为我相信绑定被视为绘图的值或某种不匹配。

第二次尝试

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}" 
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValuePath="{Binding Path=TargetSeries_X}"
  DependentValuePath="{Binding Path=TargetSeries_X}" />

此崩溃发生在初始化步骤期间,因为 Path 属性没有依赖项属性支持,因此无法绑定。

第三次尝试

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}"  
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValuePath="targetFooXColumnName" 
  DependentValuePath="targetFooYColumnName" />

现在可以了! 但我想使用绑定,以便可以从使用 targetFooXColumnName 切换到使用 targetFooBarXColumnName。因此,这个解决方案将导致大量看似黑客的代码手动切换路径。

有办法解决这个问题吗?我可以使用某种转换器来获取 Binding 属性以正确从 DataView 中的列中提取数据吗?

谢谢, 乔尔

I'm facing a problem with the charting engine from the WPF toolkit.

I haven't moved the data to a proper object model, so the ItemSource is backed with a DataView.

First attempt

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}"  
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValueBinding="{Binding Path=TargetSeries_X}" 
  DependentValueBinding="{Binding Path=TargetSeries_X}" />

This crashes because I believe the bindings are considered as the values to the plot or some sort of mismatch.

Second attempt

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}" 
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValuePath="{Binding Path=TargetSeries_X}"
  DependentValuePath="{Binding Path=TargetSeries_X}" />

This crash happens during the initialization step because the Path properties aren't backed with dependency properties and therefore cannot be bound.

Third attempt

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}"  
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValuePath="targetFooXColumnName" 
  DependentValuePath="targetFooYColumnName" />

Now this works!
But I wanted to use the binding so I can switch from using the targetFooXColumnName to the targetFooBarXColumnName. So this solution will cause a whole lot of hacky looking code to switch the Path manually.

Is there a way to fix this? Can I use some sort of converter to get the Binding properties to correctly pull the data from the columns in the DataView?

Thanks,
Joel

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只为一人 2024-09-11 17:41:35

我认为您的应用程序崩溃的原因是“您尚未将数据移动到正确的对象模型”

我可以尝试在 ScatterSeries 中绑定其工作而不会崩溃:就像

<Grid Name="grid_Sample" Loaded="grid_Sample_Loaded">
    <DVC:Chart Canvas.Top="80" Canvas.Left="10" Name="mcChart"
       Width="400" Height="250"
       Background="LightSteelBlue">
        <DVC:Chart.Series>
            <DVC:ScatterSeries x:Name="TargetSeries" 
                             ItemsSource="{Binding sampleList}"
      IndependentValueBinding="{Binding Path=TargetSeries_X}"
        DependentValueBinding="{Binding Path=TargetSeries_Y}">
    </DVC:ScatterSeries>
        </DVC:Chart.Series>
    </DVC:Chart>
</Grid>

 private void grid_Sample_Loaded(object sender, RoutedEventArgs e)
    {
        sampleList = new ObservableCollection<SampleTest>() { 
            new SampleTest(){TargetSeries_X=20,TargetSeries_Y=50},
        new SampleTest(){TargetSeries_X=25,TargetSeries_Y=60},
        new SampleTest(){TargetSeries_X=30,TargetSeries_Y=50},
        new SampleTest(){TargetSeries_X=40,TargetSeries_Y=60}
        };
        ((ScatterSeries)mcChart.Series[0]).ItemsSource = sampleList; 
    }

根据我的知识,请尝试使用正确的模型将 ItemsSource 绑定到 ScatterSeries。

I think your application crashing on reason is "you haven't moved the data to a proper object model"

i can try Binding in ScatterSeries its working with out crashes: Like

<Grid Name="grid_Sample" Loaded="grid_Sample_Loaded">
    <DVC:Chart Canvas.Top="80" Canvas.Left="10" Name="mcChart"
       Width="400" Height="250"
       Background="LightSteelBlue">
        <DVC:Chart.Series>
            <DVC:ScatterSeries x:Name="TargetSeries" 
                             ItemsSource="{Binding sampleList}"
      IndependentValueBinding="{Binding Path=TargetSeries_X}"
        DependentValueBinding="{Binding Path=TargetSeries_Y}">
    </DVC:ScatterSeries>
        </DVC:Chart.Series>
    </DVC:Chart>
</Grid>

 private void grid_Sample_Loaded(object sender, RoutedEventArgs e)
    {
        sampleList = new ObservableCollection<SampleTest>() { 
            new SampleTest(){TargetSeries_X=20,TargetSeries_Y=50},
        new SampleTest(){TargetSeries_X=25,TargetSeries_Y=60},
        new SampleTest(){TargetSeries_X=30,TargetSeries_Y=50},
        new SampleTest(){TargetSeries_X=40,TargetSeries_Y=60}
        };
        ((ScatterSeries)mcChart.Series[0]).ItemsSource = sampleList; 
    }

According to My Knowledge please try with Proper model for binding ItemsSource to ScatterSeries.

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