我需要帮助来创建Excel Pivot

问题描述

我想将带有互操作性的数据表导出到excel。 我有4列，11行的DataTable。

这是我的全部功能，应该在其中导出数据表：

@H_502_5@static string ExportExcelInterop(DataTable Report,JToken fields)
    {
        string fileName = Environment.CurrentDirectory + @"\ExcelRapor.xlsx";
        var app = new Microsoft.Office.Interop.Excel.Application();
        var workBook = app.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
        var sheet = (Microsoft.Office.Interop.Excel.Worksheet)workBook.ActiveSheet;
        for (var i = 0; i < Report.Rows.Count; i++)
        {
            for (var j = 0; j < Report.Columns.Count; j++)
            {
                sheet.Cells[1,j + 1] = Report.Columns[j].ColumnName;
                sheet.Cells[i + 2,j + 1] = Report.Rows[i][j];
            }
        }
        Microsoft.Office.Interop.Excel.Range oRange = sheet.Range["A$1:D$11"];
        if (app.Application.Sheets.Count < 2)
        {
            sheet = (Microsoft.Office.Interop.Excel.Worksheet)workBook.Worksheets.Add();
        }
        else
        {
            sheet = app.Worksheets[2];
        }
        sheet.Name = "Pivot Table";
        Microsoft.Office.Interop.Excel.Range oRange2 = sheet.Cells[1,1];
        Microsoft.Office.Interop.Excel.PivotCache oPivotCache = (Microsoft.Office.Interop.Excel.PivotCache)workBook.PivotCaches().Add(Microsoft.Office.Interop.Excel.XlPivottableSourceType.xlDatabase,oRange);
        Microsoft.Office.Interop.Excel.Pivottable oPivottable = (Microsoft.Office.Interop.Excel.Pivottable)sheet.Pivottables().Add(PivotCache: oPivotCache,TableDestination: oRange2,TableName: "Pivot Grid");
        
        foreach (var Columns in fields)
        {
            string datafield = null;
            string area = null;
            string areaIndex = null;
            string filterValues = null;
            string filterType = null;
            foreach (var Key in Columns)
            {
                string KeyName = Key.ToString().Substring(0,Key.ToString().IndexOf(':')).Substring(1,Key.ToString().Substring(1,Key.ToString().IndexOf(':')).Length - 2);
               
                foreach (var Value in Key)
                {
                    switch (KeyName)
                    {
                        case "datafield":
                            datafield = Value.ToString();
                            break;
                        case "area":
                            area = Value.ToString();
                            break;
                        case "areaIndex":
                            areaIndex = Value.ToString();
                            break;
                        case "filterValues":
                            filterValues = Value.ToString();
                            break;
                        case "filterType":
                            filterType = Value.ToString();
                            break;
                    }
                }
            }
            Microsoft.Office.Interop.Excel.PivotField oPivotField = (Microsoft.Office.Interop.Excel.PivotField)oPivottable.PivotFields(datafield);
            if (area != null)
            {

                if (area == "row")
                {
                    oPivotField.Orientation = Microsoft.Office.Interop.Excel.XlPivotFieldOrientation.xlRowField;
                }
                else if (area == "column")
                {
                    oPivotField.Orientation = Microsoft.Office.Interop.Excel.XlPivotFieldOrientation.xlColumnField;
                }
                else if (area == "data")
                {
                    oPivotField.Orientation = Microsoft.Office.Interop.Excel.XlPivotFieldOrientation.xldatafield;
                }
            }
        }

        workBook.SaveAs(fileName);
        workBook.Close(); 
        app.Quit(); 
        return fileName;
    }

我在第三个return foreach上得到异常。 我的例外： @[e-mail]: 'Pivottable sınıfının PivotFields yöntemi başarısız' 此错误消息翻译为

@H_502_5@PivotFields method of Pivottable class fails

我认为我无法设置正确的@H_502[email protected]，因此我的透视图不合适。但是我该如何解决呢？

解决方法

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