使用“Openxml writer”在Excel中合并单元格

Question

我想通过使用SAX方法和openxmlwriter合并excel中的单元格。我使用这些方法代替DOM方法是将数千条记录写入excel。

Answer 1

我正在分享一段代码，可以帮助其他人编写代码以使用OpenXmlWriter（OpenXml SAX）合并单元格

     /*OpenXMLWriter to write large data to excel to avoid System.OutOfMemoryException*/
                OpenXmlWriter oxw = OpenXmlWriter.Create(wsPart);
                oxw.WriteStartElement(new Worksheet());
               /*Excel column style */
                oxw.WriteStartElement(new Columns());
                foreach (var item in gridHeaderList)
                {
                    oxw.WriteStartElement(new Column(), new List<OpenXmlAttribute>()
                    { new OpenXmlAttribute("min", null, (item.columnIndex + 1).ToString()),
                      new OpenXmlAttribute("max", null, (item.columnIndex + 1).ToString()),
                      new OpenXmlAttribute("width", null, item.columnWidth.ToString())
                    }
                    );

                    oxw.WriteEndElement();
                }

                oxw.WriteEndElement();
                /*End of Columns element node*/

                 /*Sheet data node*/
                oxw.WriteStartElement(new SheetData());

                oxw.WriteStartElement(new Row());
                foreach (var item in dataList)
                {
                    oxw.WriteElement(new Cell() { CellValue = new CellValue(item.Value), DataType = CellValues.String, StyleIndex = item.styleIndex });
                }
                oxw.WriteEndElement();

                oxw.WriteEndElement();
                /*End of sheetdata element node*/

                /*Start of MergeCells element node NOTE: Make sure initialize "A6:D6" range cells         */      
     oxw.WriteStartElement(new MergeCells());
                    oxw.WriteElement(new MergeCell() { Reference = new StringValue("A6:D6") });
                    oxw.WriteEndElement();
                    /*End of MergeCells element node*/


                oxw.WriteEndElement();
                /*End of worksheet element node*/

                oxw.Close();