导出excel的问题，来个高手帮下忙！

public void CreateExcel(DataSet ds, string FileName)
{
HttpResponse resp;
resp = Page.Response;
resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);
string colHeaders = "", ls_item = ""; DataTable dt = ds.Tables[0];
int i = 0;
int cl = dt.Columns.Count; for (i = 0; i < cl; i++)
{
if (i == (cl - 1))
{
colHeaders += dt.Columns[i].Caption.ToString() + "/n";
}
else
{
colHeaders += dt.Columns[i].Caption.ToString() + "/t";
} }
resp.Write(colHeaders);
foreach (DataRow row in dt.Rows)
{
for (i = 0; i < cl; i++)
{
if (i == (cl - 1))
{
ls_item += row[i].ToString() + "/n";
}
else
{
ls_item += row[i].ToString() + "/t";
} }
resp.Write(ls_item);
ls_item = "";
}
resp.End();
}