通过excel可识别的xml结构直接生成xls文件

上一片文章演示了如何根据简单的excel文件结构直接生成xls文件，如果涉及到合并，公式之类的复杂操作，可以使用xml结构来直接构造xls文件，比如生成如下所示文件



上图中D列和E列为公式，第4行为公式合计，7、8行为合并过的单元格。完整代码如下：

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
namespace ConsoleApplication17
{
class Program
{
static void Main(string[] args)
{

ExcelWriter excel = new ExcelWriter();

excel.CreateSheet("XmlData");//sheetName
//增加一列，默认可以不加
excel.CreateColumn(5, 100);
//新增表头行
excel.CreateRow();
excel.CreateCellString("Name");
excel.CreateCellString("Score1");
excel.CreateCellString("Score1");
excel.CreateCellString("Score0");
excel.CreateCellString("说明");
//新增两行数据
excel.CreateRow();
excel.CreateCellString("jinjazz");
excel.CreateCellNumber(100);
excel.CreateCellNumber(98);
excel.CreateCell(0, "Number", "RC[-2]+RC[-1]",1,1); //公式，-2和-1代表当前cell的水平偏移量
excel.CreateCell(0, "String", "RC[-4]&/":/"&RC[-1]", 1, 1);//公式
excel.CreateRow();
excel.CreateCellString("游客");
excel.CreateCellNumber(33);
excel.CreateCellNumber(14);
excel.CreateCell(0, "Number", "RC[-2]+RC[-1]", 1, 1);
excel.CreateCell(0, "String", "RC[-4]&/":/"&RC[-1]", 1, 1);
//新增汇总行
excel.CreateRow();
excel.CreateCellString("总计");
excel.CreateCell(0, "Number", "SUM(R[-2]C:R[-1]C)", 1, 1);//公式，-2和-1代表cell的垂直偏移量
excel.CreateCell(0, "Number", "SUM(R[-2]C:R[-1]C)", 1, 1);
excel.CreateCell(0, "Number", "SUM(R[-2]C:R[-1]C)", 1, 1);
//增加三个空行
excel.CreateRow();
excel.CreateRow();
excel.CreateRow();
//增加一个合并过的单元格
excel.CreateCell("http://blog.csdn.net/jinjazz","String",null,2,5);

excel.Save(@"c:/testData.xls");
}
}
public class ExcelWriter
{
string ssns = "urn:schemas-microsoft-com:office:spreadsheet";
string xmlns = "urn:schemas-microsoft-com:office:spreadsheet";
XmlDocument _doc = new XmlDocument();
XmlNode _currentSheet = null;
XmlNode _currentRow = null;

public ExcelWriter()
{
//excel的xml模版，你需要了解xml的Attributes怎么用
StringBuilder sbody = new StringBuilder();
sbody.Append("<?xml version=/"1.0/"?>/n");
sbody.Append("<?mso-application progid=/"Excel.Sheet/"?>/n");
sbody.Append("<Workbook xmlns=/"urn:schemas-microsoft-com:office:spreadsheet/"/n");
sbody.Append("xmlns:o=/"urn:schemas-microsoft-com:office:office/"/n");
sbody.Append("xmlns:x=/"urn:schemas-microsoft-com:office:excel/"/n");
sbody.Append("xmlns:ss=/"urn:schemas-microsoft-com:office:spreadsheet/"/n");
sbody.Append("xmlns:html=/"http://www.w3.org/TR/REC-html40/">/n");
sbody.Append("<Styles>/n");
sbody.Append("<Style ss:ID=/"Default/" ss:Name=/"Normal/">/n");
sbody.Append("<Alignment ss:Vertical=/"Center/"/>/n");
sbody.Append("<Borders/>/n");
sbody.Append("<Font ss:FontName=/"宋体/" x:CharSet=/"134/" ss:Size=/"10/"/>/n");
sbody.Append("<Interior/>/n");
sbody.Append("<NumberFormat/>/n");
sbody.Append("<Protection/>/n");
sbody.Append("</Style>/n");
sbody.Append("</Styles>/n");
sbody.Append("</Workbook>/n");
_doc.LoadXml(sbody.ToString());
}
/// <summary>
/// 增加一个工作表
/// </summary>
/// <param name="sheetName">工作表名称</param>
public void CreateSheet(string sheetName)
{
System.Xml.XmlNode node = _doc.CreateNode(XmlNodeType.Element, "Worksheet", ssns);
System.Xml.XmlAttribute xa = _doc.CreateAttribute("ss", "Name", xmlns);
xa.Value = sheetName;
node.Attributes.Append(xa);
_doc.ChildNodes[2].AppendChild(node);
node.AppendChild(_doc.CreateNode(XmlNodeType.Element, "Table", xmlns));
_currentSheet = node;
}
/// <summary>
/// 增加一行
/// </summary>
public void CreateRow()
{
System.Xml.XmlNode node = _doc.CreateNode(XmlNodeType.Element, "Row", xmlns);
_currentSheet.ChildNodes[0].AppendChild(node);
_currentRow = node;
}
/// <summary>
/// 增加一列
/// </summary>
/// <param name="index">索引</param>
/// <param name="width">宽度</param>
public void CreateColumn(int index,float width)
{
System.Xml.XmlNode node = _doc.CreateNode(XmlNodeType.Element, "Column", xmlns);
System.Xml.XmlAttribute xa = _doc.CreateAttribute("ss", "Index", xmlns);
xa.Value = index.ToString();
node.Attributes.Append(xa);
xa = _doc.CreateAttribute("ss", "Width", xmlns);
xa.Value = width.ToString();
node.Attributes.Append(xa);
_currentSheet.ChildNodes[0].AppendChild(node);
}
/// <summary>
/// 增加一个单元格
/// </summary>
/// <param name="value">值</param>
/// <param name="Type">类型</param>
/// <param name="Expression">公式</param>
/// <param name="rowSpan">跨行</param>
/// <param name="colSpan">跨列</param>
public void CreateCell(object value, string Type, string Expression, int rowSpan, int colSpan)
{
System.Xml.XmlAttribute xa = null;
System.Xml.XmlNode nodeCell = _doc.CreateNode(XmlNodeType.Element, "Cell", xmlns);
_currentRow.AppendChild(nodeCell);
if (!string.IsNullOrEmpty(Expression))
{
xa = _doc.CreateAttribute("ss", "Formula", xmlns);
xa.Value = "=" + Expression;
nodeCell.Attributes.Append(xa);
}
if (--colSpan > 0)
{
xa = _doc.CreateAttribute("ss", "MergeAcross", xmlns);
xa.Value = colSpan.ToString();
nodeCell.Attributes.Append(xa);
}
if (--rowSpan > 0)
{
xa = _doc.CreateAttribute("ss", "MergeDown", xmlns);
xa.Value = rowSpan.ToString();
nodeCell.Attributes.Append(xa);
}
System.Xml.XmlNode nodeData = _doc.CreateNode(XmlNodeType.Element, "Data", xmlns);
xa = _doc.CreateAttribute("ss", "Type", xmlns);
xa.Value = Type;
nodeData.Attributes.Append(xa);
nodeData.InnerText = value.ToString();
nodeCell.AppendChild(nodeData);
}
/// <summary>
/// 增加一个数字单元格
/// </summary>
/// <param name="value"></param>
public void CreateCellNumber(double value)
{
CreateCell(value, "Number", null, 1, 1);
}
/// <summary>
/// 增加一个字符串单元格
/// </summary>
/// <param name="value"></param>
public void CreateCellString(string value)
{
CreateCell(value, "String", null, 1, 1);
}
/// <summary>
/// 保存
/// </summary>
/// <param name="strFile"></param>
public void Save(string strFile)
{
_doc.Save(strFile);
}

}

}

上面代码基本都是对xml文件的操作，需要你对xml的dom对象比较熟悉，尤其是Attributes的使用。