复制代码 代码如下:

public static void CreateExcel(DataSet ds)        {            string filename = DateTime.Now.ToString("yyyyMMddHHmmssff") + ".xls";            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + filename);            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            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            for (i = 0; i < cl; i++)            {                if (i == (cl - 1))//最后一列，加\n                {                    colHeaders += dt.Columns[i].Caption.ToString() + "\n";                }                else                {                    colHeaders += dt.Columns[i].Caption.ToString() + "\t";                }
            }            HttpContext.Current.Response.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() + "\n";                    }                    else                    {                        ls_item += row[i].ToString() + "\t";                    }
                }                HttpContext.Current.Response.Write(ls_item);                ls_item = "";
            }            HttpContext.Current.Response.End();        }