C＃中的标签饼图/ Dougnhut图表＃

Question

我正在生成圆环图，但某些情况下线标签百分比已关闭，并且在某些情况下百分号已关闭。

如何解决这个问题？

- 代码

 chart.Series["Data"].ChartType = SeriesChartType.Doughnut; 
     chart.Series["Data"]["PieLineColor"] = "LightGray"; 
     chart.Series["Data"]["DoughnutRadius"] = "30"; 
     chart.Series["Data"]["PieStartAngle"] = "270"; 
     chart.ChartAreas[0].InnerPlotPosition.Height = 90; 
     chart.ChartAreas[0].InnerPlotPosition.Width = 90; 
     chart.ChartAreas[0].Area3DStyle.Enable3D = true; 
     chart.ChartAreas[0].Area3DStyle.Inclination = 0; 
     chart.Series["Data"].Label = "#PERCENT{P0}"; 
     chart.Series["Data"].LegendText = "#VALX"; 
     chart.Series["Data"].Font = new Font("Arial", 16.0f, FontStyle.Bold); 

Answer 1

Html code: 
    <asp:Chart ID="Chart1" runat="server" Height="300px" Width="400px" > 
      <Titles> 
       <asp:Title ShadowOffset="3" Name="Items" /> 
      </Titles> 
      <Legends> 
       <asp:Legend Alignment="Center" Docking="Bottom" IsTextAutoFit="False" Name="Default" 
        LegendStyle="Row" /> 
      </Legends> 
      <Series> 
       <asp:Series Name="Data" Color="Chocolate" BackGradientStyle="HorizontalCenter" /> 
      </Series> 
      <ChartAreas > 
       <asp:ChartArea Name="ChartArea1" BorderWidth="0" BackColor="White" /> 
      </ChartAreas> 
     </asp:Chart> 

    Code behind: 
    chart.Series["Data"].ChartType = SeriesChartType.Doughnut; 
    chart.Series["Data"]["PieLabelStyle"] = "outside"; 
    chart.Series["Data"]["PieLineColor"] = "LightGray"; 
    chart.Series["Data"]["DoughnutRadius"] = "30"; 
    chart.Series["Data"]["PieStartAngle"] = "270"; 
    chart.ChartAreas[0].InnerPlotPosition.Height = 90; 
    chart.ChartAreas[0].InnerPlotPosition.Width = 90; 
    chart.ChartAreas[0].Area3DStyle.Enable3D = true; 
    chart.ChartAreas[0].Area3DStyle.Inclination = 0; 
    chart.Series["Data"].Font = new Font("Arial", 16.0f, FontStyle.Bold); 
    foreach (DataPoint p in chart.Series["Data"].Points) 
        { 
         p.Label = "#PERCENT"; 
         p.LabelToolTip = "#VALX"; 
         p.LabelForeColor = Color.Brown; 
         p.LegendText = "#VALX"; 
         p.LegendToolTip = "#PERCENT"; 
         p.LabelToolTip = "#PERCENT\n#VALX"; 

        } 

只有下面添加到您当前的.cs代码 这将增加标签和tooltiop既您的馅饼/ Dougnhut图表foreach循环。 请让我知道你是否会在这样做时遇到任何问题。