c# - 使用 “Openxml writer” 合并 Excel 中的单元格

Question

我想通过使用 SAX 方法和 openxmlwriter 来合并 Excel 中的单元格。我已经使用这些方法代替 DOM 方法，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();