asp.net导出数据到Excel

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 1        Sql数据列表导出到EXCEL#region Sql数据列表导出到EXCEL
 2        /**////<summary>
 3        ///<param name="queryStr">sql语句</param>
 4        /// <param name="connectionString">l数据库连接</param>
 5        /// <param name="ExcelFileName">Excel文件名</param>
 6        ///</summary>
 7        public static bool ToExcel(string queryStr,string ExcelFileName)
 8        {
 9            // TODO: implement
10            DataSet ds = new DataSet();
11            ds=SqlHelper.ExecuteDataset(SqlHelper.conn, CommandType.Text, queryStr);
12            //queryStr语句生成DataSet
13
14            DataTable dt = new DataTable();
15            dt=ds.Tables[0];
16
17            HttpContext context =HttpContext.Current;
18            context.Response.Clear();
19            context.Response.Buffer = true;
20            context.Response.Charset = "GB2312";
21
22            System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
23            //设置区域性信息
24            StringWriter sw = new StringWriter(myCItrad);
25            //定义字符串写入流对象
26
27            string header = "";
28
29            foreach (DataColumn column in dt.Columns)
30            {
31                header += " " + column.Caption.ToString() +"\t";
32            }
33
34            if (header != "")
35                header = header.Remove(0, 1) + " ";
36            sw.WriteLine(header);
37
38            foreach (DataRow dr in dt.Rows)
39            {
40                string record = "";
41                for (int i = 0; i < dt.Columns.Count; i++)
42                {
43                    record += " " + dr[i].ToString().Replace(" ", " ").ToString()  + "\t";
44                }
45
46                if (record != "")
47                    record = record.Remove(0, 1) + " ";
48                sw.WriteLine(record);
49            }
50            sw.Close();
51            context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(ExcelFileName, System.Text.Encoding.UTF8) + ".xls");
52            context.Response.ContentType = "application/ms-excel";
53            context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
54            context.Response.Write(sw);
55            context.Response.End();
56            return true;
57        }
58        #endregion