Windows 8 RadCartesianChart没有'；由于某些点的空值，因此无法绘制

我使用Telerik RadCartesianChart，它的ItemSource绑定在ObservableCollection上

例如，它有3项：

值1=10

值2=空

值3=20

其StrokeMode=“AllButPlotLine”

由于空值，未绘制线。 我能画吗

关于，RadChart（RadCartesianChart）支持空（null/NaN）值。下面是一个使用MVVM模式的示例，供您探索。请注意，没有表示橙子的值

这里还有一个安装文件夹中的空值示例：C:\Program Files（x86）\Telerik\UI for Windows 8.1 XAML 2014年第2季度\Demos\Examples\Chart\EmptyValue

MainPage.xaml

 <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
        <chart:RadCartesianChart Width="700" Height="700">
            <chart:RadCartesianChart.Grid>
                <chart:CartesianChartGrid MajorLinesVisibility="XY" StripLinesVisibility="Y">
                    <chart:CartesianChartGrid.MajorXLineStyle>
                        <Style TargetType="Line">
                            <Setter Property="Stroke" Value="#B45121"/>
                            <Setter Property="StrokeDashArray" Value="4,2"/>
                        </Style>
                    </chart:CartesianChartGrid.MajorXLineStyle>
                    <chart:CartesianChartGrid.MajorYLineStyle>
                        <Style TargetType="Line">
                            <Setter Property="Stroke" Value="#58622D"/>
                            <Setter Property="StrokeDashArray" Value="10,2"/>
                        </Style>
                    </chart:CartesianChartGrid.MajorYLineStyle>
                </chart:CartesianChartGrid>
            </chart:RadCartesianChart.Grid>
            <chart:RadCartesianChart.DataContext>
                <local:ViewModel/>
            </chart:RadCartesianChart.DataContext>
            <chart:RadCartesianChart.HorizontalAxis>
                <chart:CategoricalAxis/>
            </chart:RadCartesianChart.HorizontalAxis>
            <chart:RadCartesianChart.VerticalAxis>
                <chart:LinearAxis/>
            </chart:RadCartesianChart.VerticalAxis>
            <chart:LineSeries ItemsSource="{Binding SeriesData}">
                <chart:LineSeries.CategoryBinding>
                    <chart:PropertyNameDataPointBinding PropertyName="Category"/>
                </chart:LineSeries.CategoryBinding>
                <chart:LineSeries.ValueBinding>
                    <chart:PropertyNameDataPointBinding PropertyName="Value"/>
                </chart:LineSeries.ValueBinding>
            </chart:LineSeries>
        </chart:RadCartesianChart>
    </Grid>

ViewModel.cs

public class ViewModel
{
    public ViewModel()
    {
        this.SeriesData = new List<CustomPoint>()
        {
            new CustomPoint{ Category = "Apples", Value = 10 },
            new CustomPoint{ Category = "Oranges"},
            new CustomPoint{ Category = "Pears", Value = 15 },
        };
    }
    public List<CustomPoint> SeriesData { get; set; }
}

公共类视图模型
{
公共视图模型（）
{
this.SeriesData=新列表（）
{
新CustomPoint{Category=“Apples”，Value=10}，
新CustomPoint{Category=“Oranges”}，
新CustomPoint{Category=“Pears”，Value=15}，
};
}
公共列表序列数据{get；set；}
}

这条线表示未绘制的值。。因为在你的例子中橙子没有价值。是你画的吗？

public class ViewModel
{
    public ViewModel()
    {
        this.SeriesData = new List<CustomPoint>()
        {
            new CustomPoint{ Category = "Apples", Value = 10 },
            new CustomPoint{ Category = "Oranges"},
            new CustomPoint{ Category = "Pears", Value = 15 },
        };
    }
    public List<CustomPoint> SeriesData { get; set; }
}