c# - devexpress 饼图显示值的百分比

Question

我正在使用 devexpress 饼图。有 2 个切片，值为 8 和 12(总共 20 个)。 当我使用下面的代码时，切片上显示的值是 0/4 和 0/6，而我需要的值是 40% 和 60%。

((PiePointOptions)series.LegendPointOptions).PointView = PointView.Values;
((PiePointOptions)series.LegendPointOptions).PercentOptions.ValueAsPercent = false;

设置 ValueAsPercent = true 将值更改为 0 和 1 只会让事情变得更糟!!!并在切片上显示相同的比例(0/4 和 0/6)。

如何显示每个切片的百分比？

Answer 1

下面是一个简单的例子，看看是否有帮助

// Create an empty chart.
        ChartControl pieChart = new ChartControl();

        // Create a pie series and add it to the chart.
        Series series1 = new Series("Pie Series", ViewType.Pie);
        pieChart.Series.Add(series1);

        // Add points to it.
        series1.Points.Add(new SeriesPoint("A", new double[] { 0.3 }));
        series1.Points.Add(new SeriesPoint("B", new double[] { 5 }));
        series1.Points.Add(new SeriesPoint("C", new double[] { 9 }));
        series1.Points.Add(new SeriesPoint("D", new double[] { 12 }));

        // Make the series point labels display both arguments and values.
        ((PiePointOptions)series1.Label.PointOptions).PointView = PointView.ArgumentAndValues;

        // Make the series points' values to be displayed as percents.
        ((PiePointOptions)series1.Label.PointOptions).PercentOptions.ValueAsPercent = true;
        ((PiePointOptions)series1.Label.PointOptions).ValueNumericOptions.Format = NumericFormat.Percent;
        ((PiePointOptions)series1.Label.PointOptions).ValueNumericOptions.Precision = 0;

        // Add the chart to the form.
        pieChart.Dock = DockStyle.Fill;
        this.Controls.Add(pieChart);