原文发布时间为：2010-06-21 —— 来源于本人的百度文章 [由搬家工具导入]
======目前方法=========== #region 生成Excel/// <summary>
/// DataSet导出Excel
/// </summary>
/// <param name="arrTitle">列标题，若为null，则直接取dataset列标题</param>
/// <param name="ds">要导出的DataSet</param>
/// <param name="fileName">Excel文件名，不需要传入扩展名</param>
protected void CreateExcel(string[] arrTitle, DataSet ds, string fileName)
{
StringBuilder strb = new StringBuilder();
strb.Append(" <html xmlns:o="urn:schemas-microsoft-com:office:office"");
strb.Append("xmlns:x="urn:schemas-microsoft-com:office:excel"");
strb.Append("xmlns="http://www.w3.org/TR/REC-html40"");
strb.Append(" <head> <meta http-equiv='Content-Type' content='text/html; charset=gb2312'>");
strb.Append(" <style>");
strb.Append(".xl26");
strb.Append(" {mso-style-parent:style0;");
strb.Append(" font-family:"Times New Roman", serif;");
strb.Append(" mso-font-charset:0;");
strb.Append(" mso-number-format:"@";}");
strb.Append(" </style>");
strb.Append(" <xml>");
strb.Append(" <x:ExcelWorkbook>");
strb.Append(" <x:ExcelWorksheets>");
strb.Append(" <x:ExcelWorksheet>");
strb.Append(" <x:Name>Sheet1 </x:Name>");
strb.Append(" <x:WorksheetOptions>");
strb.Append(" <x:DefaultRowHeight>285 </x:DefaultRowHeight>");
strb.Append(" <x:Selected/>");
strb.Append(" <x:Panes>");
strb.Append(" <x:Pane>");
strb.Append(" <x:Number>3 </x:Number>");
strb.Append(" <x:ActiveCol>1 </x:ActiveCol>");
strb.Append(" </x:Pane>");
strb.Append(" </x:Panes>");
strb.Append(" <x:ProtectContents>False </x:ProtectContents>");
strb.Append(" <x:ProtectObjects>False </x:ProtectObjects>");
strb.Append(" <x:ProtectScenarios>False </x:ProtectScenarios>");
strb.Append(" </x:WorksheetOptions>");
strb.Append(" </x:ExcelWorksheet>");
strb.Append(" <x:WindowHeight>6750 </x:WindowHeight>");
strb.Append(" <x:WindowWidth>10620 </x:WindowWidth>");
strb.Append(" <x:WindowTopX>480 </x:WindowTopX>");
strb.Append(" <x:WindowTopY>75 </x:WindowTopY>");
strb.Append(" <x:ProtectStructure>False </x:ProtectStructure>");
strb.Append(" <x:ProtectWindows>False </x:ProtectWindows>");
strb.Append(" </x:ExcelWorkbook>");
strb.Append(" </xml>");
strb.Append("");
strb.Append(" </head> <body> <table align="center" style='border-collapse:collapse;table-layout:fixed'> <tr>");
if (ds.Tables.Count > 0)
{
//写列标题
if (arrTitle != null && arrTitle.Length > 0)
{
foreach (string strCol in arrTitle)
{
strb.Append(" <td> <b>" + strCol + " </b> </td>");
}
strb.Append(" </tr>");
}
else
{
int columncount = ds.Tables[0].Columns.Count;
for (int columi = 0; columi < columncount; columi++)
{
strb.Append(" <td> <b>" + ds.Tables[0].Columns[columi] + " </b> </td>");
}
strb.Append(" </tr>");
}
//写数据
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
strb.Append(" <tr>");
for (int j = 0; j < ds.Tables[0].Columns.Count; j++)
{
strb.Append(" <td class='xl26'>" + ds.Tables[0].Rows[i][j].ToString() + " </td>");
}
strb.Append(" </tr>");
}
}
strb.Append(" </body> </html>");
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8) + ".xls");
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//设置输出流为简体中文
Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
this.EnableViewState = false;
Response.Write(strb);
Response.End();
}
#endregion
//不过为什么导出Excel，单元格是受保护呢！
//导出word，只要把扩展名 .xls 改成 .doc即可。
//这个人也是用这个方法：http://wyf.javaeye.com/blog/531171
===============以往方法===============
#region 生成Excel
/// <summary>
/// DataSet导出Excel
/// </summary>
/// <param name="arrTitle">列标题，若为null，则直接取dataset列标题</param>
/// <param name="ds">要导出的DataSet</param>
/// <param name="fileName">Excel文件名，不需要传入扩展名</param>
protected void CreateExcel(string[] arrTitle, DataSet ds, string fileName)
{
HttpResponse resp;
resp = Page.Response;
resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
resp.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8) + ".xls");
string colHeaders = "", ls_item = "";
//定义表对象与行对象，同时用DataSet对其值进行初始化
System.Data.DataTable dt = ds.Tables[0];
DataRow[] myRow = dt.Select();//可以类似dt.Select("id>10")之形式达到数据筛选目的
int i = 0;
int cl = dt.Columns.Count;
//取得数据表各列标题，各标题之间以t分割，最后一个列标题后加回车符
if (arrTitle != null && arrTitle.Length > 0)
{
for (i = 0; i < arrTitle.Length; i++)
{
if (i == (arrTitle.Length - 1))//最后一列，加n
{
colHeaders += arrTitle[i] + " ";
}
else
{
colHeaders +=arrTitle[i] + " ";
}
}
}
else
{
for (i = 0; i < cl; i++)
{
if (i == (cl - 1))//最后一列，加n
{
colHeaders += dt.Columns[i].Caption.ToString() + " ";
}
else
{
colHeaders += dt.Columns[i].Caption.ToString() + " ";
}
}
}
resp.Write(colHeaders);
//向HTTP输出流中写入取得的数据信息
//逐行处理数据
foreach (DataRow row in myRow)
{
//当前行数据写入HTTP输出流，并且置空ls_item以便下行数据
for (i = 0; i < cl; i++)
{
if (i == (cl - 1))//最后一列，加n
{
ls_item += row[i].ToString() + " ";
}
else
{
ls_item += row[i].ToString() + " ";
}
}
resp.Write(ls_item);
ls_item = "";
}
resp.End();
}
#endregion