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  • Open xml 操作Excel 透视表(Pivot table)-- 实现Excel多语言报表

    我的一个ERP项目中,客户希望使用Excel Pivot table 做分析报表。 ERP 从数据库中读出数据,导出到Excel中的数据源表(统一命名为Data),刷新Pivot table!

    客户还希望对Excel报表提供多语言支持, 根据用户的语言生成不同版本的Excel文件。

    经过不断尝试,终于成功完成该任务, 本篇简要描述这个任务涉及到的知识点。

    把一个包含透视表及透视图的Excel .xlsx文件重命名为.zip 文件,然后解压缩到某个文件夹下,就可以看到Excel是如何定义透视表及透视图了, 如下图所示,pivotTables 定义了透视表中行、列及数据字段等, PivotCache 中则定义了Pivot table 的数据源、字段匹配,以及缓存了上一次打开的数据

                           

                        (Excel文件结构)

     

                           (pivotTablespivotTable1.xml截图)

        (pivotCachepivotCacheDefinition1.xml 截图)

    根据以上描述, 在导入数据后. 还需要完成以下步骤:

    1. 重新设置透视表 的数据源到数据区域.

    重新设置Pivot table 数据源的代码如下:    

     1         //其中sheetName为作为数据源的工作表名,lastReference为数据源中最后一个单元格的引用名,比如最后一列为AG,共10行则为AG10
     2     public static void SetPivotSource(WorkbookPart wbPart, string sheetName, string lastReference)
     3         {
     4             var pivottableCashes = wbPart.PivotTableCacheDefinitionParts;
     5             foreach (PivotTableCacheDefinitionPart pivottablecachePart in pivottableCashes)
     6             {
     7                 pivottablecachePart.PivotCacheDefinition.CacheSource.RemoveAllChildren();
     8 //设置Pivot tabla的数据源为A1:lastReference
     9                 pivottablecachePart.PivotCacheDefinition.CacheSource.Append(new WorksheetSource() {
    10                     Sheet = sheetName, Reference = new StringValue("A1:" + lastReference) });
    11             }
    12         }
    //假设Data表格中的最后一列的Reference为AG,总共有100行(加上列头行共101行),则导入数据后调用 
    using (SpreadsheetDocument document = SpreadsheetDocument.Open(rawFileName, true))
    
                {
    
                    WorkbookPart wbPart = document.WorkbookPart;
    
                                    SetPivotSource(wbPart,"data","AG101");
    
                        }

    2.  翻译Excel 数据源表字段名

    也就是翻译及修改Data表格中第一行的单元格内容

      public static void UpdateCellValue(WorkbookPart wbPart, Cell theCell,string newValue)
            {
                string value = theCell.InnerText;
                if (theCell.DataType != null)
                {
                    switch (theCell.DataType.Value)
                    {
                        case CellValues.SharedString:
                            var stringTable = wbPart.GetPartsOfType<SharedStringTablePart>().FirstOrDefault();
                            if (stringTable != null)
                            {
                                var ele = stringTable.SharedStringTable.ElementAt(int.Parse(value));
                                ele.RemoveAllChildren();
                                ele.Append(new DocumentFormat.OpenXml.Spreadsheet.Text(newValue));
                            }
                            break;
    
                        case CellValues.Boolean:
                            if (string.Compare(value,"FALSE",true) ==0)
                            {
                                theCell.InnerXml = "1";
                            }
                            else
                            {
                                theCell.InnerXml = "0";
                            }
                            break;
                        default:
                            theCell.InnerXml = newValue;
                            break;
                    }
                }
            }
    
       using (SpreadsheetDocument document = SpreadsheetDocument.Open(rawFileName, true))
                {
                    WorkbookPart wbPart = document.WorkbookPart;
                    
                    var dataSheet = wbPart.Workbook.Descendants<Sheet>().FirstOrDefault(c => string.Compare(c.Name, "Data",true)==0);
                    WorksheetPart worksheetPart = (WorksheetPart)wbPart.GetPartById(dataSheet.Id);
                    var headerRow = worksheetPart.Worksheet.GetFirstChild<SheetData>().Elements<Row>().
                               FirstOrDefault(c => c.RowIndex == 1);
                    var cells = headerRow.Elements<Cell>().ToList();
                    foreach (var cell in cells)
                    {
                        var rawText = ExcelHelper.GetCellValue(wbPart, cell);
                        ExcelHelper.UpdateCellValue(wbPart, cell, _translator.Translate(rawText));
                        //cell.CellValue = new CellValue(_translator.Translate(rawText));
                        //cell.DataType = new EnumValue<CellValues>(CellValues.String);
                    }
                    worksheetPart.Worksheet.Save();
        }

    3.  翻译pivotCacheDefinition缓存区的字段定义。

     using (SpreadsheetDocument document = SpreadsheetDocument.Open(rawFileName, true))
                {
                    WorkbookPart wbPart = document.WorkbookPart;
                var pivottableCashes = wbPart.PivotTableCacheDefinitionParts;
                    foreach (PivotTableCacheDefinitionPart pivottablecachePart in pivottableCashes)
                    {
                        pivottablecachePart.PivotCacheDefinition.RefreshOnLoad = true;
                        var pivotCacheFields = pivottablecachePart.PivotCacheDefinition.CacheFields;
                        foreach (OpenXmlElement pivotCacheField in pivotCacheFields)
                        {
                            OpenXmlAttribute nameEle = pivotCacheField.GetAttribute("name", "");
                            nameEle.Value = _translator.Translate(nameEle.Value);
                            pivotCacheField.SetAttribute(nameEle);
                        }   
                    }
        }

    4.  翻译Pivot Table 透视表定义区域的数据字段名,以及图表区的数据源表名

     //sheet为Sheet类型对象
                oxPart = wbPart.GetPartById(sheet.Id);
                        //Translate Pivot table data(numeric) field defination, such as "Sum of [Vat...]"
                        if (oxPart.ContentType.Contains("worksheet"))
                        {
                            wsP = (WorksheetPart)oxPart;
                            tbDefParts = wsP.PivotTableParts;
                            foreach (PivotTablePart ptPart in tbDefParts)
                            {
                                dataFileds = ptPart.PivotTableDefinition.DataFields;
                                foreach (DataField df in dataFileds)
                                {
                                    if (df.Name.Value.StartsWith(SUM_OF))
                                    {
                                        df.Name = new StringValue(_translator.Translate(SUM_OF) + " " +
                                            _translator.Translate(df.Name.Value.Replace(SUM_OF, "").Trim()));
                                    }
                                }
                            }
                        }
    
     var index =  rawFileName.LastIndexOf(@"");
                    var filename = rawFileName.Substring(index+1);
                    foreach(ChartsheetPart cspart in wbPart.ChartsheetParts)
                    {
                        var chartparts = cspart.DrawingsPart.ChartParts ;
                        foreach(ChartPart cp in chartparts)
                        {
                            PivotSource pivotSource =  cp.RootElement.OfType<PivotSource>().First();
                            string originalName = pivotSource.PivotTableName.InnerText;
                            Regex reg = new Regex(@"^[[]([^]]+)[]]([^!]+)!(.*)$");
                            var matches = reg.Matches(originalName);
                            if (matches.Count > 0 && matches[0].Groups.Count >3)
                            {
                                string newName = string.Format("[{0}]{1}!{2}", filename,
                                    _translator.Translate(matches[0].Groups[2].Value), matches[0].Groups[3].Value);
                                pivotSource.PivotTableName = new PivotTableName(newName);
                            }
                        }

    5. 翻译表格名, 需要翻译所有除了Data表外的工作表名。

      foreach (Sheet sheet in sheets)
                    {
                        if (string.Compare(sheet.Name, "data", true) != 0)
                        {
                            var translatedName = _translator.Translate(sheet.Name);
                            if (!string.IsNullOrEmpty(translatedName) && translatedName.Length > 30)
                            {
                                translatedName = translatedName.Substring(0, 30);
                            }
                            sheet.Name = translatedName;
                        }
            }
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  • 原文地址:https://www.cnblogs.com/Hcsdn/p/3223407.html
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