我正在创建一个Excel导出,其中包含多个饼图,这些饼图是根据数据库中的数据动态创建的,这些数据已转储到电子表格中的一系列单元格中。我需要饼图的数据标签在饼图的外侧。默认情况下,数据标签设置为最合适。
我尝试使用具有eLabelPosition
属性但没有运气的OutEnd
来操纵数据标签的位置。这样做会使数据标签完全消失。
下面是我用来生成饼图的方法。
private void AddPieChart(ExcelWorksheet worksheet, int firstDataRow, int firstDataColumn, int lastDataRow, int nextColumn, int firstColumn)
{
ExcelPieChart pieChart = worksheet.Drawings.AddChart(worksheet.Name.ToString() + " Pie Chart", eChartType.Pie3D) as ExcelPieChart;
var serie = pieChart.Series.Add(ExcelCellBase.GetAddress(firstDataRow + 3, firstDataColumn, lastDataRow + 3, firstDataColumn),
ExcelCellBase.GetAddress(firstDataRow + 3, firstColumn, lastDataRow + 3, firstColumn));
pieChart.DataLabel.ShowCategory = true;
pieChart.DataLabel.ShowLeaderLines = true;
pieChart.DataLabel.Font.Bold = true;
pieChart.DataLabel.Font.Size = 12;
pieChart.Legend.Remove();
pieChart.SetSize(500, 350);
pieChart.SetPosition(lastDataRow + 5, 0, nextColumn - 1, 0);
pieChart.Border.Fill.Color = Color.White;
pieChart.Series.Chart.RoundedCorners = false;
var pieSerie = (ExcelPieChartSerie)serie;
pieSerie.DataLabel.Position = eLabelPosition.OutEnd;
}
答案 0 :(得分:0)
如果您已将DataLabel
属性分配给ExcelPieChart
,然后又尝试在DataLabel
上分配ExcelPieChartSerie
属性,则该属性不适用于ExcelPieChartSerie
。为了解决此问题,请删除DataLabel
上的任何ExcelPieChart
属性,然后将它们添加到ExcelPieChartSerie
中,如下所示。
private void AddPieChart(ExcelWorksheet worksheet, int firstDataRow, int firstDataColumn, int lastDataRow, int nextColumn, int firstColumn)
{
ExcelPieChart pieChart = worksheet.Drawings.AddChart(worksheet.Name.ToString() + " Pie Chart", eChartType.Pie3D) as ExcelPieChart;
var serie = pieChart.Series.Add(ExcelCellBase.GetAddress(firstDataRow + 3, firstDataColumn, lastDataRow + 3, firstDataColumn),
ExcelCellBase.GetAddress(firstDataRow + 3, firstColumn, lastDataRow + 3, firstColumn));
pieChart.Legend.Remove();
pieChart.SetSize(500, 350);
pieChart.SetPosition(lastDataRow + 5, 0, nextColumn - 1, 0);
pieChart.Border.Fill.Color = Color.White;
pieChart.Series.Chart.RoundedCorners = false;
var pieSerie = (ExcelPieChartSerie)serie;
pieSerie.DataLabel.ShowCategory = true;
pieSerie.DataLabel.ShowLeaderLines = true;
pieSerie.DataLabel.Font.Bold = true;
pieSerie.DataLabel.Font.Size = 12;
pieSerie.DataLabel.Position = eLabelPosition.OutEnd;
}