导出Excel（利用xml标记）

using System;

using System.Data;

using System.Web;

using System.Text;

using System.IO;

/// <summary>

/// 生成Excel数据并返回文件名称

/// strData为要显示的内容--Html编码格式

/// </summary>

/// <param name="strData"></param>

/// <returns></returns>

public static string strCreateExcelAndReturnFileName(string strData)

{

string strFileName = "myData.xls";

//====================================================

StringBuilder sb = new StringBuilder();

sb.Append("<html xmlns:o=\"urn:schemas-microsoft-com:office:office\"");

sb.Append("xmlns:x=\"urn:schemas-microsoft-com:office:excel\"");

sb.Append("xmlns=\"http://www.w3.org/TR/REC-html40\">");

sb.Append("<head>");

sb.Append("<meta http-equiv=Content-Type content=\"text/html; charset=gb2312\">");

sb.Append("<meta name=ProgId content=Excel.Sheet>");

sb.Append("<meta name=Generator content=\"Microsoft Excel 10\">");

sb.Append("<!--[if gte mso 9]><xml>");

sb.Append("<x:ExcelWorkbook>");

sb.Append("<x:ExcelWorksheets>");

sb.Append("<x:ExcelWorksheet>");

sb.Append("<x:Name>电信卡报表</x:Name>");

sb.Append("<x:WorksheetOptions>");

sb.Append("<x:Print>");

sb.Append("<x:ValidPrinterInfo/>");

sb.Append("</x:Print>");

sb.Append("</x:WorksheetOptions>");

sb.Append("</x:ExcelWorksheet>");

sb.Append("</x:ExcelWorksheets>");

sb.Append("</x:ExcelWorkbook>");

sb.Append("</xml>");

sb.Append("<![endif]--> ");

sb.Append("</head>");

sb.Append("<body>");

sb.Append(strData);

sb.Append("</body>");

sb.Append("</html>");

//====================================================

WriteExcelFile(HttpContext.Current.Server.MapPath(System.Configuration.ConfigurationSettings.AppSettings["path_excel"].ToString().Trim()) + strFileName,sb.ToString());

//====================================================

return System.Configuration.ConfigurationSettings.AppSettings["path_excel"].ToString().Trim() + strFileName;

}

/// <summary>

/// 写Excel文件

/// </summary>

/// <param name="strFileName"></param>

/// <param name="strData"></param>

private void WriteExcelFile(string strFileName,string strData)

{

try

{

StreamWriter sw = new StreamWriter(strFileName,true,System.Text.Encoding.Default);

sw.WriteLine(strData);

sw.Close();

}

catch(Exception e)

{

string str = e.Message;

}