Question

我刚刚开始使用DevExpress Charting Components，我正在尝试一个饼图。

它工作正常，但我有一个问题，我无法在任何地方找到答案，即使它可能很简单。

传奇显示百分比，但我需要它来显示“ArgumentDataMember”，否则传说实际上并没有用。

这是短代码：

    Series series1 = new Series("Series1", ViewType.Pie3D);

    chartControl.Series.Add(series1);

    series1.DataSource = dt;
    series1.ArgumentScaleType = ScaleType.Qualitative;
    series1.ArgumentDataMember = "CategoryName";
    series1.ValueScaleType = ScaleType.Numerical;
    series1.ValueDataMembers.AddRange(new string[] { "Products" });
    series1.LegendText = series1.ArgumentDataMember;
    chartControl.Legend.Visible = true;

显然是seri1.LegendText = series1.ArgumentDataMember;没用。

有人知道如何使用参数（数据名称）作为图例文本而不是值吗？

Answer 1

 Series series1 = new Series("Series1", ViewType.Pie3D);

    chartControl.Series.Add(series1);

    series1.DataSource = dt;
    series1.ArgumentScaleType = ScaleType.Qualitative;
    series1.ArgumentDataMember = "CategoryName";
    series1.ValueScaleType = ScaleType.Numerical;
    series1.ValueDataMembers.AddRange(new string[] { "Products" });
   // series1.LegendText = series1.ArgumentDataMember;
   series1.PointOptions.PointView = PointView.Argument; //this is code that you want
  //if you only legend box change
  series1.LegendPointOptions.PointView = PointView.Argument;
    chartControl.Legend.Visible = true;

Answer 2

您可以使用LegendPointOptions并使用以下代码：

Series series1 = new Series("Series1", ViewType.Pie3D);

chartControl.Series.Add(series1);

series1.DataSource = dt;
series1.ArgumentScaleType = ScaleType.Qualitative;
series1.ArgumentDataMember = "CategoryName";
series1.ValueScaleType = ScaleType.Numerical;
series1.ValueDataMembers.AddRange(new string[] { "Products" });
series1.LegendText = series1.ArgumentDataMember;

series1.LegendPointOptions.Pattern = string.Concat("{V}");//or string.Concat("{A}") or string.Concat("{A}:{V}")

chartControl.Legend.Visible = true;

Answer 3

您可以将属性设置为false。

CType(series.PointOptions, PiePointOptions).PercentOptions.ValueAsPercent = False

Vb.NET示例。

For Each series As Series In ChartControl1.Series
     If series.PointOptions.GetType = GetType(PiePointOptions) Then
          CType(series.PointOptions, PiePointOptions).PercentOptions.ValueAsPercent = False
          series.ShowInLegend = True
     End If
     series.PointOptions.ValueNumericOptions.Format = NumericFormat.Number
     series.PointOptions.ValueNumericOptions.Precision = 1
Next

DevExpress饼图图例文本（asp.net）

3 个答案: