NPOI真实世界枢轴示例
我搜查了很多，但我最终在这里问这个问题。 我的问题没有令人满意的答案：我想创build一个Excel数据透视表（WorkSheet1作为数据透视表，WorkSheet2作为数据源）我没有任何问题从DataTable创build数据源。 但是没有指导文档来添加分层列和分层行和度量，它们映射到数据源（工作表2）。 我很确定映射是完成的：
var pt = pivotSheet.CreatePivotTable(new AreaReference(new CellReference("A2"), new CellReference(rowCount, columnCount -1)), new CellReference("A1"), dataSheet); 但没有证据显示如何映射分层列和分层行和度量。
我已经浪费了太多时间，所以我非常需要帮助：任何帮助将不胜感激…
问候efaruk …
这是我的EPPlus解决scheme[*****]
public static class ExcelPivotHelper { public static void CreateExcelPivot(Stream outputStream, DataTable data, PivotSettings settings) { using (var pckg = new ExcelPackage()) { var book = pckg.Workbook; var pivotSheet = book.Worksheets.Add("Pivot"); var dataSheet = book.Worksheets.Add("Data"); var dataRange = GenerateDataSheet(data, dataSheet); GeneratePivotSheet(pivotSheet, dataRange, settings); pckg.SaveAs(outputStream); } } private static void GeneratePivotSheet(ExcelWorksheet pivotSheet, ExcelRangeBase dataRange, PivotSettings settings) { //var rowCount = data.Rows.Count; //var columnCount = data.Columns.Count; var pt = pivotSheet.PivotTables.Add(pivotSheet.Cells["A1"], dataRange, "PivotTable"); pt.MultipleFieldFilters = true; pt.RowGrandTotals = true; pt.ColumGrandTotals = true; pt.Compact = true; pt.CompactData = true; pt.GridDropZones = false; pt.Outline = false; pt.OutlineData = false; pt.ShowError = true; pt.ErrorCaption = "[error]"; pt.ShowHeaders = true; pt.UseAutoFormatting = true; pt.ApplyWidthHeightFormats = true; pt.ShowDrill = true; pt.DataOnRows = false; pt.FirstHeaderRow = 1; // first row has headers pt.FirstDataCol = 1; // first col of data pt.FirstDataRow = 2; // first row of data pt.TableStyle = TableStyles.Medium6; //pt.ColumGrandTotals = true; //pt.RowGrandTotals = true; //pt.GrandTotalCaption = "Genel Toplam"; // pt.RowHeaderCaption = ""; foreach (var column in settings.Columns) { var field = pt.Fields[column.Field]; var pivotField = pt.ColumnFields.Add(field); if (column.PivotDataType == PivotDataType.Date) { //pivotField.AddDateGrouping(eDateGroupBy.Days); } } foreach (var row in settings.Rows) { var field = pt.Fields[row.Field]; var pivotField = pt.RowFields.Add(field); if (row.PivotDataType == PivotDataType.Date) { //pivotField.AddDateGrouping(eDateGroupBy.Days); } } foreach (var measurement in settings.Measurements) { var field = pt.Fields[measurement.Field]; var pivotField = pt.DataFields.Add(field); pivotField.Format = measurement.DisplayFormat; pivotField.Function = DataFieldFunctions.Sum; pivotField.Name = measurement.Caption; } } private static readonly Type[] NumericTypes = { typeof(decimal), typeof(double), typeof(float), typeof(int), typeof(long), typeof(short), typeof(byte) }; private static ExcelRangeBase GenerateDataSheet(DataTable data, ExcelWorksheet dataSheet) { dataSheet.Hidden = eWorkSheetHidden.VeryHidden; var range = dataSheet.Cells["A1"].LoadFromDataTable(data, true, TableStyles.Medium6); range.AutoFitColumns(); for (var i = 0; i < data.Columns.Count; i++) { var ix = i + 1; var cell = dataSheet.Cells[2, ix, data.Rows.Count + 1, ix]; var column = data.Columns[i]; if (NumericTypes.Contains(column.DataType)) { cell.Style.Numberformat.Format = "#,##0"; } else if (column.DataType == typeof(DateTime)) { cell.Style.Numberformat.Format = "dd.MM.yyyy"; } } return range; } } public class PivotSettings { private string _generalTotalText = "Genel Toplam"; private string _yesText = "Evet"; private string _noText = "Hayır"; private string _fileExtension = ".xlsx"; /// <summary> /// Default ctor /// </summary> public PivotSettings() { Columns = new List<PivotItemSetting>(10); Rows = new List<PivotItemSetting>(10); Measurements = new List<MeasureSetting>(10); } /// <summary> /// Column Item Settings /// </summary> public List<PivotItemSetting> Columns { get; set; } /// <summary> /// Row Item Settings /// </summary> public List<PivotItemSetting> Rows { get; set; } /// <summary> /// Measure Settings /// </summary> public List<MeasureSetting> Measurements { get; set; } /// <summary> /// Display text for 'Genel Toplam' word. Default is 'Genel Toplam' /// </summary> public string GeneralTotalText { get { return _generalTotalText; } set { _generalTotalText = value; } } /// <summary> /// Display text for 'Evet' word. Default is 'Evet' /// </summary> public string YesText { get { return _yesText; } set { _yesText = value; } } /// <summary> /// Display text for 'Hayır' word. Default is 'Hayır' /// </summary> public string NoText { get { return _noText; } set { _noText = value; } } /// <summary> /// Excel File Extension /// </summary> public string FileExtension { get { return _fileExtension; } set { _fileExtension = value; } } } /// <summary> /// Setting for Pivot Column and Row /// </summary> public class PivotItemSetting { private string _displayFormat = "{0}"; /// <summary> /// Field Name /// </summary> public string Field { get; set; } /// <summary> /// Desired data type of the field /// </summary> public PivotDataType PivotDataType { get; set; } /// <summary> /// Desired display format string for field /// </summary> public string DisplayFormat { get { return _displayFormat; } set { _displayFormat = value; } } /// <summary> /// Automatically filled by generation process. Don't fill manually. /// </summary> public int CalculatedItemCount { get; set; } } /// <summary> /// Pivot Measure Setting /// </summary> public class MeasureSetting { private string _displayFormat = "#,##0"; /// <summary> /// Field Name /// </summary> public string Field { get; set; } /// <summary> /// Measure Caption /// </summary> public string Caption { get; set; } /// <summary> /// Type of Measure /// </summary> public MeasureType MeasureType { get; set; } /// <summary> /// Desired display format string for measure /// </summary> public string DisplayFormat { get { return _displayFormat; } set { _displayFormat = value; } } } /// <summary> /// Masure type /// </summary> public enum MeasureType { /// <summary> /// Sum of the values for measure field /// </summary> Sum }
更新
Yep DataTable是正常的DataTable，你问…stream是任何types的stream取决于你想如何使用它：在我的情况下MemoryStream创buildASP.Net MVC响应为文件下载…
这里是自定义types：
/// <summary> /// Settings for Pivot Table /// </summary> public class PivotSettings { private string _generalTotalText = "Genel Toplam"; private string _yesText = "Evet"; private string _noText = "Hayır"; private string _fileExtension = ".xlsx"; /// <summary> /// Default ctor /// </summary> public PivotSettings() { Columns = new List<PivotItemSetting>(10); Rows = new List<PivotItemSetting>(10); Measurements = new List<MeasureSetting>(10); } /// <summary> /// Column Item Settings /// </summary> public List<PivotItemSetting> Columns { get; set; } /// <summary> /// Row Item Settings /// </summary> public List<PivotItemSetting> Rows { get; set; } /// <summary> /// Measure Settings /// </summary> public List<MeasureSetting> Measurements { get; set; } /// <summary> /// Display text for 'Genel Toplam' word. Default is 'Genel Toplam' /// </summary> public string GeneralTotalText { get { return _generalTotalText; } set { _generalTotalText = value; } } /// <summary> /// Display text for 'Evet' word. Default is 'Evet' /// </summary> public string YesText { get { return _yesText; } set { _yesText = value; } } /// <summary> /// Display text for 'Hayır' word. Default is 'Hayır' /// </summary> public string NoText { get { return _noText; } set { _noText = value; } } /// <summary> /// Excel File Extension /// </summary> public string FileExtension { get { return _fileExtension; } set { _fileExtension = value; } } } /// <summary> /// Setting for Pivot Column and Row /// </summary> public class PivotItemSetting { private string _displayFormat = "{0}"; /// <summary> /// Field Name /// </summary> public string Field { get; set; } /// <summary> /// Desired data type of the field /// </summary> public PivotDataType PivotDataType { get; set; } /// <summary> /// Desired display format string for field /// </summary> public string DisplayFormat { get { return _displayFormat; } set { _displayFormat = value; } } /// <summary> /// Automatically filled by generation process. Don't fill manually. /// </summary> public int CalculatedItemCount { get; set; } } /// <summary> /// Pivot Measure Setting /// </summary> public class MeasureSetting { private string _displayFormat = "#,##0"; /// <summary> /// Field Name /// </summary> public string Field { get; set; } /// <summary> /// Measure Caption /// </summary> public string Caption { get; set; } /// <summary> /// Type of Measure /// </summary> public MeasureType MeasureType { get; set; } /// <summary> /// Desired display format string for measure /// </summary> public string DisplayFormat { get { return _displayFormat; } set { _displayFormat = value; } } } /// <summary> /// Masure type /// </summary> public enum MeasureType { /// <summary> /// Sum of the values for measure field /// </summary> Sum } /// <summary> /// Pivot Item type /// </summary> public enum PivotDataType { /// <summary> /// Not Defined, Default /// </summary> None, /// <summary> /// String /// </summary> String, /// <summary> /// Date Part of DateTime /// </summary> Date, /// <summary> /// DateTime /// </summary> DateTime, /// <summary> /// Numeric /// </summary> Numeric, /// <summary> /// Boolean /// </summary> Boolean }
问候…