asp.net - 如何隐藏或删除线系列 RadChart 中的零值

Question

我正在使用 Radchart，我想删除显示值为零的线系列。是否有任何可能的方法来隐藏或删除显示为零的值。请提供任何解决方案或代码。

提前致谢。

Answer 1

经过 2 天的努力，我找到了如何隐藏或删除包含零的线系列的解决方案。我有四个线系列，其中第 4 个线系列包含零，我想隐藏那些零值，我已经完成了.

实现前

实现后

代码

             //-------------------Styling------------------------           
        RadChart1.DefaultView.ChartLegend.Background = new SolidColorBrush(Color.FromArgb(255, 75, 119, 255));

        RadChart1.DefaultView.ChartArea.AxisY.StripLinesVisibility = Visibility.Collapsed;
        RadChart1.DefaultView.ChartArea.AxisY.MajorGridLinesVisibility = Visibility.Visible;

        RadChart1.DefaultView.ChartLegend.UseAutoGeneratedItems = true;
        RadChart1.DefaultView.ChartLegend.Header = "";


        RadChart1.DefaultView.ChartLegendPosition = Telerik.Windows.Controls.Dock.Bottom;
        RadChart1.DefaultView.ChartLegend.Foreground = new SolidColorBrush(Colors.White);
        RadChart1.DefaultView.ChartLegend.LegendItemStyle = new Style() { TargetType = typeof(ChartLegendItem) };
        RadChart1.DefaultView.ChartLegend.LegendItemStyle.Setters.Add(new Setter() { Property = Control.ForegroundProperty, Value = new SolidColorBrush(Colors.White) });


        ChartLegendItem ch1 = new ChartLegendItem() { Label = "FY10", Background = new SolidColorBrush(Colors.Blue), Foreground = new SolidColorBrush(Colors.White) };
        ChartLegendItem ch2 = new ChartLegendItem() { Label = "FY11", Background = new SolidColorBrush(Colors.Brown), Foreground = new SolidColorBrush(Colors.White) };
        ChartLegendItem ch3 = new ChartLegendItem() { Label = "FY12", Background = new SolidColorBrush(Colors.Green), Foreground = new SolidColorBrush(Colors.White) };
        ChartLegendItem ch4 = new ChartLegendItem() { Label = "FY13", Background = new SolidColorBrush(Colors.Black), Foreground = new SolidColorBrush(Colors.White) };

        ChartLegendItemCollection chC = new ChartLegendItemCollection();
        chC.Add(ch1);
        chC.Add(ch2);
        chC.Add(ch3);
        chC.Add(ch4);

        RadChart1.DefaultView.ChartLegend.UseAutoGeneratedItems = false;
        RadChart1.DefaultView.ChartLegend.Items.Clear();
        RadChart1.DefaultView.ChartLegend.Items.Add(chC[0]);
        RadChart1.DefaultView.ChartLegend.Items.Add(chC[1]);
        RadChart1.DefaultView.ChartLegend.Items.Add(chC[2]);
        RadChart1.DefaultView.ChartLegend.Items.Add(chC[3]);

        Style pathStyle1 = new Style(typeof(System.Windows.Shapes.Path));
        pathStyle1.Setters.Add(new Setter(Shape.StrokeProperty, new SolidColorBrush(Colors.Blue)));
        pathStyle1.Setters.Add(new Setter(Shape.StrokeThicknessProperty, 2));

        Style lineStyle1 = new Style(typeof(Telerik.Windows.Controls.Charting.LineSeries));
        lineStyle1.Setters.Add(new Setter(LineSeries.BorderLineStyleProperty, pathStyle1));

        Style pathStyle2 = new Style(typeof(System.Windows.Shapes.Path));
        //  pathStyle2.Setters.Add(new Setter(Shape.StrokeDashArrayProperty, "1"));
        pathStyle2.Setters.Add(new Setter(Shape.StrokeProperty, new SolidColorBrush(Colors.Brown)));
        pathStyle2.Setters.Add(new Setter(Shape.StrokeThicknessProperty, 2));

        Style lineStyle2 = new Style(typeof(Telerik.Windows.Controls.Charting.SelfDrawingSeries));
        lineStyle2.Setters.Add(new Setter(SelfDrawingSeries.BorderLineStyleProperty, pathStyle2));

        Style pathStyle3 = new Style(typeof(System.Windows.Shapes.Path));
        //  pathStyle3.Setters.Add(new Setter(Shape.StrokeDashArrayProperty, "1"));
        pathStyle3.Setters.Add(new Setter(Shape.StrokeProperty, new SolidColorBrush(Colors.Green)));
        pathStyle3.Setters.Add(new Setter(Shape.StrokeThicknessProperty, 2));

        Style lineStyle3 = new Style(typeof(Telerik.Windows.Controls.Charting.SelfDrawingSeries));
        lineStyle3.Setters.Add(new Setter(SelfDrawingSeries.BorderLineStyleProperty, pathStyle3));


        Style pathStyle4 = new Style(typeof(System.Windows.Shapes.Path));
        //pathStyle4.Setters.Add(new Setter(Shape.StrokeDashArrayProperty, "1"));
        pathStyle4.Setters.Add(new Setter(Shape.StrokeProperty, new SolidColorBrush(Colors.Black)));
        pathStyle4.Setters.Add(new Setter(Shape.StrokeThicknessProperty, 2));

        Style lineStyle4 = new Style(typeof(Telerik.Windows.Controls.Charting.SelfDrawingSeries));
        lineStyle4.Setters.Add(new Setter(SelfDrawingSeries.BorderLineStyleProperty, pathStyle4));

        DataSeries line1 = new DataSeries() { Definition = new LineSeriesDefinition() { ShowItemLabels = false, ShowPointMarks = false, SeriesStyle = lineStyle1 } };
        DataSeries line2 = new DataSeries() { Definition = new LineSeriesDefinition() { ShowItemLabels = false, ShowPointMarks = false, SeriesStyle = lineStyle2 } };
        DataSeries line3 = new DataSeries() { Definition = new LineSeriesDefinition() { ShowItemLabels = false, ShowPointMarks = false, SeriesStyle = lineStyle3 } };
        DataSeries line4 = new DataSeries() { Definition = new LineSeriesDefinition() { ShowItemLabels = false, ShowPointMarks = false, SeriesStyle = lineStyle4 } };


        //-------------------------Data Binding---------------------------
        List< WebService. RadChart1Data > objListAPS = new List<WebService.RadChart1Data>();
        objListAPS = (List< WebService. RadChart1Data >)e.Result.ToList();

        foreach (RadChart1Data obj in objListAPS)
        {
            line1.Add(new DataPoint(obj.Week, obj.BlueLine));
            line2.Add(new DataPoint(obj.Week, obj.RedLine));
            line3.Add(new DataPoint(obj.Week, obj.GreenLine));
            if (obj.BlackLine != 0)
                line4.Add(new DataPoint(obj.Week, obj. BlackLine));
        }

        RadChart1.DefaultView.ChartArea.DataSeries.Add(line1);
        RadChart1.DefaultView.ChartArea.DataSeries.Add(line2);
        RadChart1.DefaultView.ChartArea.DataSeries.Add(line3);
        RadChart1.DefaultView.ChartArea.DataSeries.Add(line4);

        RadChart1.DefaultView.ChartArea.AxisX.LayoutMode =  Telerik.Windows.Controls.Charting.AxisLayoutMode.Inside;

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谢谢

吃晚饭