DataSet数据导出为Excel文档（每个DataTable为一个Sheet）

Web项目中，很多时候须要实现将查询的数据集导出为Excel文档的功能，很多时候不希望在工程中添加对Office组件相关的DLL的引用，甚至有时候受到Office不同版本的影响，导致在不同的服务器上部署后功能受限，或和其它项目冲突，那么，使用这种简单粗暴的方式，可能会解决部分猿类灵长动物的烦恼忧愁。

/// <summary>/// DataSet导出到Excel文件（多个Sheet）/// </summary>/// <param name="dataSet">DataSet</param>/// <param name="fileName">文件名称</param>/// <returns>导出是否成功</returns>public static bool DataSetToExcel(DataSet dataSet, string fileName){    if (dataSet == null) return false;    if (dataSet.Tables.Count < 1) return false;    if (dataSet.Tables[0] == null) return false;    if (string.IsNullOrWhiteSpace(fileName)) return false;    try    {        ExecDataSetToExcel(dataSet, fileName);        return true;    }    catch (Exception ex)    {        //DO LOG        return false;    }}

//执行 DataSet 导出PRivate static void ExecDataSetToExcel(DataSet dataSet, string fileName){    HttpResponse httpResponse = HttpContext.Current.Response;    httpResponse.Clear();    httpResponse.Charset = "utf-8";    httpResponse.ContentType = "text/xml";    httpResponse.ContentEncoding = System.Text.Encoding.UTF8;    httpResponse.AppendHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, Encoding.UTF8) + ".xls");    StringBuilder sb = new StringBuilder();    for (int i = 0; i < dataSet.Tables.Count; i++)    {        System.Data.DataTable dt = dataSet.Tables[i];        //新建Sheet        string sheetName = string.IsNullOrWhiteSpace(dt.TableName) ? "Sheet" + (i + 1) : dt.TableName;        sb.Append("<Worksheet ss:Name='" + sheetName + "'>");        sb.Append("<Table x:FullColumns='1' x:FullRows='1' ss:DefaultColumnWidth='118'>");        //输出标题行        sb.Append("<Row ss:AutoFitHeight='1'>");        for (int j = 0; j < dt.Columns.Count; j++) sb.Append("<Cell ss:StyleID='header'><Data ss:Type='String'>" + dt.Columns[j].ColumnName + "</Data></Cell>");        sb.Append("</Row>");        //输入内容行        for (int k = 0; k < dt.Rows.Count; k++)        {            sb.Append("<Row>");            for (int l = 0; l < dt.Columns.Count; l++)            {                //Type ct = dt.Columns[l].DataType;                //sb.Append("<Cell ss:StyleID='body'><Data ss:Type='Number'>" + dt.Rows[k][l] + "</Data></Cell>"); //数字类型                sb.Append("<Cell ss:StyleID='body'><Data ss:Type='String'>" + dt.Rows[k][l] + "</Data></Cell>");            }            sb.Append("</Row>");        }        sb.Append("</Table>");        sb.Append("</Worksheet>");    }    string excelXmlDoc = CreateExcelXmlDoc(sb.ToString());    httpResponse.Write(excelXmlDoc);    httpResponse.Flush();    httpResponse.End();}

//创建Excel文档对应的XML字符串private static string CreateExcelXmlDoc(string worksheetXml){    StringBuilder sb = new StringBuilder();    sb.Append("<?xml version='1.0'?><?mso-application progid='Excel.Sheet'?>");    sb.Append("<Workbook xmlns='urn:schemas-microsoft-com:office:spreadsheet' xmlns:o='urn:schemas-microsoft-com:office:office'"        +"xmlns:x='urn:schemas-microsoft-com:office:excel' xmlns:ss='urn:schemas-microsoft-com:office:spreadsheet'"        +"xmlns:html='http://www.w3.org/TR/REC-html40'>");    //文档属性    sb.Append("<DocumentProperties xmlns='urn:schemas-microsoft-com:office:office'>"        + "<Author>Unitech</Author><LastAuthor>Unitech</LastAuthor><Created></Created><LastSaved></LastSaved><Version>12.00</Version>"        + "</DocumentProperties>");    //样式    sb.Append("<Styles>");    sb.Append("<Style ss:ID='header'>"        + "<Font ss:FontName='宋体' x:CharSet='134' ss:Size='10' ss:Color='#000000' ss:Bold='0'/>"        + "<Alignment ss:Horizontal='Center' ss:Vertical='Center'/>"        + "<Interior ss:Color='#d8d8d8' ss:Pattern='Solid'/>"        + "<Borders>"        + "<Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "<Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "<Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "<Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "</Borders></Style>");    sb.Append("<Style ss:ID='body'>"        + "<Font ss:FontName='宋体' x:CharSet='134' ss:Size='10' ss:Color='#000000'/>"        + "<Alignment ss:Vertical='Center'/>"        + "<NumberFormat ss:Format='@'/>"        + "<Borders>"        + "<Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "<Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "<Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "<Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1' ss:Color='#bfbfbf'/>"        + "</Borders></Style>");    sb.Append("</Styles>");    //Work Sheet    sb.Append(worksheetXml);    sb.Append("</Workbook>");    return sb.ToString();}

有需要的拿去自己进行改进和优化吧。