在C#中使用Excel InterOp设置饼图样式

using Excel = Microsoft.Office.Interop.Excel;

// 创建Excel应用程序对象
Excel.Application excelApp = new Excel.Application();

// 创建工作簿对象
Excel.Workbook workbook = excelApp.Workbooks.Open("路径\\文件名.xlsx");

// 获取工作表对象
Excel.Worksheet worksheet = workbook.Worksheets["工作表名称"];

// 选择数据范围
Excel.Range dataRange = worksheet.Range["A1:B5"];

// 创建饼图对象
Excel.ChartObjects chartObjects = (Excel.ChartObjects)worksheet.ChartObjects(Type.Missing);
Excel.ChartObject chartObject = chartObjects.Add(100, 100, 300, 300);
Excel.Chart chart = chartObject.Chart;

// 将数据范围设置为饼图的数据源
Excel.Series series = (Excel.Series)chart.SeriesCollection(1);
series.Values = dataRange;

// 设置饼图样式
chart.ChartType = Excel.XlChartType.xlPie;
chart.HasLegend = true;
chart.Legend.Position = Excel.XlLegendPosition.xlLegendPositionRight;
chart.Legend.Font.Size = 12;
chart.Legend.Font.Bold = true;

// 设置饼图数据标签
chart.ApplyDataLabels(Excel.XlDataLabelsType.xlDataLabelsShowPercent, false, true, false, false, false, true);

// 保存并关闭Excel文件
workbook.Save();
workbook.Close();

// 释放对象
System.Runtime.InteropServices.Marshal.ReleaseComObject(series);
System.Runtime.InteropServices.Marshal.ReleaseComObject(chart);
System.Runtime.InteropServices.Marshal.ReleaseComObject(chartObject);
System.Runtime.InteropServices.Marshal.ReleaseComObject(chartObjects);
System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);

// 关闭Excel进程
excelApp.Quit();