XMl導Excel

  public void ExportExcel(string field, string fvalue){
   //創建導出類
   DAL.CExcelXMLWriter excel = new DAL.CExcelXMLWriter();
   //獲取xsl模板
   string templatePath = this.Request.PhysicalApplicationPath + "\\Template\\xsl\\Workcenter.xsl";
   //獲取序列號把文件更名
   string filePath = this.Request.PhysicalApplicationPath + "Temp\\Workcenter.xls";
   //調用導出類生成Excel
   string sql;
   if (field == "(all*)" || fvalue =="" ){
    sql = "select WorkCenter,Description,Plant,Category,convert(varchar,validdate,111) as ValidDate,CostCenter,MachineTon,MachineType,EfficiencyRate,MachineQty,Employee,QuotationRouting,wcGroup from setWorkcenter where active='A'";
   } else {
    sql = "select WorkCenter,Description,Plant,Category,convert(varchar,validdate,111) as ValidDate,CostCenter,MachineTon,MachineType,EfficiencyRate,MachineQty,Employee,QuotationRouting,wcGroup from setWorkcenter where active='A' and "+ field.Trim() +" like '%"+ fvalue.Trim() +"%' ";
   }
   DataSet ds = func.GetDataTable(sql);
//   //加入表頭部分 Activity Price
//   DataTable dt = new DataTable("title");
//   dt.Columns.Add("Title");
//   dt.Rows.Add(new object[] {"Workcenter"});
//   ds.Tables.Add(dt);
   //開始啟動導出
   excel.BuildExcel(ds, filePath, templatePath);
   //將導到的EXCEL 文件傳送到Client下載
   DownLoadToClient(Page.Response, filePath,"Workcenter.xls");
   //刪除導出的臨時文件
   if (File.Exists(filePath)){
    File.Delete(filePath);
   }
  }

  public static void DownLoadToClient(System.Web.HttpResponse response, string filepath, string VirtualName) {
//   if(realFilename.Trim()=="") {
//    response.Write("<script>alert('Invalid filename!');</script>");
//    return;
//   }
//
   try {
    if(File.Exists(filepath)) {
     FileInfo fi=new FileInfo(filepath);
     response.Clear();
     response.ClearHeaders();
     response.Buffer=false;
                                                             
     response.AppendHeader("Content-Disposition","attachment;filename="+System.Web.HttpUtility.UrlEncode(System.Text.Encoding.UTF8.GetBytes(VirtualName)));
     response.AppendHeader("Content-Length",fi.Length.ToString());
     response.ContentType="application/octet-stream";
     response.WriteFile(filepath);
     response.Flush();

     response.End();
    }
   }
   catch(Exception){}
  }
------------------------------------------------------------------------
以下為類文件

using System;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Xml;
using System.Xml.Xsl;
using System.Xml.XPath;
using System.Data;
using System.IO;

namespace DAL
{
 /// <summary>
 /// CExcelXMLWriter 的摘要描述。
 /// </summary>
 public class CExcelXMLWriter
 {
  public CExcelXMLWriter()
  {
   //
   // TODO: 在此加入建構函式的程式碼
   //
  }

  /// <summary>
  /// 建立XML文檔格式文件(XSL)
  /// </summary>
  /// <param name="ds">要輸出的數據集</param>
  /// <param name="XslPath">xsl文檔存放路徑</param>
  private void GetXSLFile(DataSet ds,string XslPath, params string[] Titles)
  {
   string strColumn = "";
   string strRow = "";
   string dsName=ds.DataSetName;
   string tableName=ds.Tables[0].TableName;
   string header = dsName + "/" + tableName;

   foreach(string title in Titles)
   {
    strColumn += "<th>" + title +"</th>" + "\r\n";
    strRow += "<td>" + "<xsl:value-of select=" + "\"" + title + "\"" +"/>" + "</td>" + "\r\n";
   }
   //   foreach(DataColumn clm in ds.Tables[0].Columns)
   //   {
   //    //特殊字符替換 <,>,",*,%,(,),& 替換
   //    //*************************************************
   //    //*************************************************
   //    // 符號        xml下的值      excel中的值
   //    //  < --------  _x003C_  ------ &lt;
   //    //  > --------　_x003E_  ------ &gt;
   //    //  " --------  _x0022_  ------ &quot;
   //    //  * --------  _x002A_  ------ *
   //    //  % --------  _x0025_  ------ %
   //    //  & --------  _x0026_  ------ &amp;
   //    //  ( --------  _x0028_  ------ (
   //    //  ) --------  _x0029_  ------ )
   //    //  = --------  _x003D_  ------ =
   //    //*************************************************
   //    //*************************************************
   //
   //    string strClmName = clm.ColumnName;
   //    string strRowName = clm.ColumnName;
   //           
   //    if(strClmName.IndexOf("&")!=-1)
   //     strClmName=strClmName.Replace("&","&amp;");
   //    if(strClmName.IndexOf("<")!=-1)
   //     strClmName=strClmName.Replace("<","&lt;");
   //    if(strClmName.IndexOf(">")!=-1)
   //     strClmName=strClmName.Replace(">","&gt;");
   //    if(strClmName.IndexOf("\"")!=-1)
   //     strClmName=strClmName.Replace("\"","&quot;");
   //           
   //    if(strRowName.IndexOf("<")!=-1)
   //     strRowName=strRowName.Replace("<","_x003C_");
   //    if(strRowName.IndexOf(">")!=-1)
   //     strRowName=strRowName.Replace(">","_x003E_");
   //    if(strRowName.IndexOf("\"")!=-1)
   //     strRowName=strRowName.Replace("\"","_x0022_");
   //    if(strRowName.IndexOf("*")!=-1)
   //     strRowName=strRowName.Replace("*","_x002A_");
   //    if(strRowName.IndexOf("%")!=-1)
   //     strRowName=strRowName.Replace("%","_x0025_");
   //    if(strRowName.IndexOf("&")!=-1)
   //     strRowName=strRowName.Replace("&","_x0026_");
   //    if(strRowName.IndexOf("(")!=-1)
   //     strRowName=strRowName.Replace("(","_x0028_");
   //    if(strRowName.IndexOf(")")!=-1)
   //     strRowName=strRowName.Replace(")","_x0029_");
   //    if(strRowName.IndexOf("=")!=-1)
   //     strRowName=strRowName.Replace("=","_x003D_");
   //           
   //
   //    strColumn += "<th>" + strClmName +"</th>" + "\r\n";
   //    strRow += "<td>" + "<xsl:value-of select=" + "\"" + strRowName + "\"" +"/>" + "</td>" + "\r\n";
   //   }
   string str = @"<xsl:stylesheet version=""1.0"" xmlns:xsl=""http://www.w3.org/1999/XSL/Transform"">
        <xsl:template match=""/"">
        <html xmlns:o=""urn:schemas-microsoft-com:office:office"" xmlns:x=""urn:schemas-microsoft-com:office:excel"" xmlns=""http://www.w3.org/TR/REC-html40"">
        <head>
        <meta http-equiv=""Content-Type"" content=""text/html;charset=utf-8"" />
        <style>
        .xl24{mso-style-parent:style0;mso-number-format:""\@"";text-align:right;}
        </style>
        <xml>
        <x:ExcelWorkbook>
        <x:ExcelWorksheets>
        <x:ExcelWorksheet>
        <x:Name>Sheet1</x:Name>
        <x:WorksheetOptions>
                <x:ProtectContents>False</x:ProtectContents>
                <x:ProtectObjects>False</x:ProtectObjects>
                <x:ProtectScenarios>False</x:ProtectScenarios>
        </x:WorksheetOptions>
        </x:ExcelWorksheet>
        </x:ExcelWorksheets>
        </x:ExcelWorkbook>
        </xml>
        </head> 
        <body> ";
   str += "\r\n" +  @"<table border=""1"" cellpadding=""0"" cellspacing=""0"">
                <tr>" + "\r\n";
   str += strColumn;
   str += @" </tr>
                <xsl:for-each select="""+header+@""">
                <tr>";
   str += "\r\n" + strRow;
   str += @"</tr>
                </xsl:for-each>
                </table>
                </body>
                </html>
                   
                   
                </xsl:template>
                </xsl:stylesheet> ";

   string path = XslPath;
   if(File.Exists(path))
   {
    File.Delete(path);
   }
   FileStream fs = File.Create(path);
   StreamWriter sw=new StreamWriter(fs);
   sw.Write(str);
   sw.Close();
   fs.Close();
  }

  /// <summary>
  /// 根據數據集，生成替換后的XML文檔
  /// </summary>
  /// <param name="ds">數據集</param>
  /// <param name="XmlFilePath">XML文檔路徑</param>
  private  void GetXmlFile(DataSet ds,string XmlFilePath)
  {
   string strXml = ds.GetXml();
   if(File.Exists(XmlFilePath))
   {
    File.Delete(XmlFilePath);
   }
   FileStream fs1 = File.Create(XmlFilePath);
   StreamWriter writer = new StreamWriter(fs1);
   writer.Write(strXml);
   writer.Close();
   fs1.Close();
  }

  /// <summary>
  /// 生成EXCEL文檔
  /// </summary>
  /// <param name="path">EXCEL輸出完整路徑</param>
  /// <param name="ds">數據集</param>
  public bool BuildExcel(DataSet ds,string path, params string[] Titles)
  {
   bool flag = false;

   if(File.Exists(path))
   {
    File.Delete(path);
   }
   string _path = path.Substring(0,path.Length-4);
   string _fileXml=_path + ".xml";
   string _fileXsl=_path + ".xsl";
   string _fileXls=_path+".xls";

   try
   {
    GetXmlFile(ds,_fileXml);
    GetXSLFile(ds,_fileXsl,Titles);

    XmlDocument doc = new XmlDocument();
    doc.Load(_fileXml);
    XslTransform xslt = new XslTransform();
    xslt.Load(_fileXsl);
    XmlElement root = doc.DocumentElement;
    XPathNavigator nav = root.CreateNavigator();
    XmlTextWriter writer = new XmlTextWriter(_fileXls, null);
    xslt.Transform(nav, null, writer, null);
    writer.Close();
    File.Delete(_fileXml);
    File.Delete(_fileXsl);

    flag = true;
   }
   catch
   {
    throw;
   }
   return flag;
  }

  /// <summary>
  /// 生成EXCEL文檔
  /// </summary>
  /// <param name="path">EXCEL輸出完整路徑</param>
  /// <param name="ds">數據集</param>
  public bool BuildExcel(DataSet ds, string tempPath, string xslPath)
  {
   bool flag = false;

   if(File.Exists(tempPath))
   {
    File.Delete(tempPath);
   }
   string _path = tempPath.Substring(0,tempPath.Length-4);
   string _fileXml=_path + ".xml";
   string _fileXsl=_path + ".xsl";
   string _fileXls=_path+".xls";

   try
   {
    GetXmlFile(ds,_fileXml);

    XmlDocument doc = new XmlDocument();
    doc.Load(_fileXml);
    XslTransform xslt = new XslTransform();
    xslt.Load(xslPath);
    XmlElement root = doc.DocumentElement;
    XPathNavigator nav = root.CreateNavigator();
    XmlTextWriter writer = new XmlTextWriter(_fileXls, null);
    xslt.Transform(nav, null, writer, null);
    writer.Close();
    File.Delete(_fileXml);

    flag = true;
   }
   catch(Exception ex)
   {
    string msg = ex.Message;
    throw;
   }
   return flag;
  }

        /// <summary>
        /// 生成EXCEL文檔
        /// </summary>
        /// <param name="path">EXCEL輸出完整路徑</param>
        /// <param name="ds">數據集</param>
        public bool BuildExcelWithSheets(DataSet ds, string tempPath, string xslPath)
        {
            bool flag = false;

            if (File.Exists(tempPath))
            {
                File.Delete(tempPath);
            }
            string _path = tempPath.Substring(0, tempPath.Length - 4);
            string _fileXml = _path + ".xml";
            string _fileXsl = _path + ".xsl";
            string _fileXls = _path + ".xls";
            string _fileXsd = _path + ".xsd";

            try
            {
                GetXmlFile(ds, _fileXml);

                XmlDocument doc = new XmlDocument();
                doc.Load(_fileXml);
                XslTransform xslt = new XslTransform();
                xslt.Load(xslPath);
                XmlElement root = doc.DocumentElement;
                XPathNavigator nav = root.CreateNavigator();
                XmlTextWriter writer = new XmlTextWriter(_fileXsd, null);

                xslt.Transform(nav, null,writer,null) ;
                writer.Close();
                File.Delete(_fileXml);

                StreamReader rd = new StreamReader(_fileXsd, Encoding.UTF8);
                string ss = rd.ReadToEnd();
                ss = ss.Replace("&lt;", "<");
                ss = ss.Replace("&gt;", ">");
                rd.Close();
                StreamWriter sw = new StreamWriter(_fileXls);
                sw.Write(ss);
                File.Delete(_fileXsd);
                sw.Close();   

                flag = true;
            }
            catch (Exception ex)
            {
                string msg = ex.Message;
                throw;
            }
            return flag;
        }
 }
}