.Net 中DataSet导出为excel的方法

依旧是留下代码防止以后忘记

protected void Export_Click(object sender, EventArgs e)
        {
            DataSet data = ""      //数据获取

            DataTable dt = data.Tables[0];
            DataRow[] myrow = dt.Select();


            Response.Clear();
            Response.ContentType = "application/vnd.ms-excel";
            Response.Charset = "gb2312";
            Response.ContentEncoding = Encoding.GetEncoding("gb2312");          //用其他编码格式会出现中文乱码的情况
            Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode("自定义文件名称") + ".xls"));
            int cl = dt.Columns.Count;
            string colhead="";     //列标签
            string item = "";        //行

            for (int i = 0; i < cl; i++)
            {
                if (i == cl - 1)
                {
                    colhead +=dt.Columns[i].Caption.ToString()+"\n";
                }
                else
                {
                    colhead += dt.Columns[i].Caption.ToString() + "\t";
                }
            }
            Response.Write(colhead);

            foreach (DataRow row in myrow)
            {
                for (int i = 0; i < cl; i++)
                {
                    if (i == cl - 1)
                    {
                        item += row[i].ToString() + "\n";
                    }
                    else
                    {
                        item += row[i].ToString() + "\t";
                    }
                }
                Response.Write(item);
                item = "";
            }
            //Response.Write("<meta http-equiv=\"content-type\" content=\"application/ms-excel; charset=gb2312\"/>");       //防止中文乱码
            Response.End();
        }