/// <summary>
        /// IList导出Excel
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="list">集合</param>
        /// <param name="dataColumn">字段</param>
        /// <param name="fileName"></param>
        public static void ListToExcel<T>(IList list, string[] dataColumn, string fileName)
        {
            HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
            HttpContext.Current.Response.Charset = "Utf-8";
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName + ".xls", System.Text.Encoding.UTF8));
            StringBuilder sbHtml = new StringBuilder();
            sbHtml.AppendLine("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">");
            sbHtml.AppendLine("<table cellspacing=\"0\" cellpadding=\"5\" rules=\"all\" border=\"1\">");
            //写出列名
            sbHtml.AppendLine("<tr style=\"background-color: #FFE88C;font-weight: bold; white-space: nowrap;\">");
            foreach (string item in dataColumn)
            {
                string[] stritem = item.Split(‘:‘);
                sbHtml.AppendLine("<td>" + stritem[0] + "</td>");
            }
            sbHtml.AppendLine("</tr>");
            //写数据
            foreach (T entity in list)
            {
                Hashtable ht = HashtableHelper.GetModelToHashtable<T>(entity);
                sbHtml.Append("<tr>");
                foreach (string item in dataColumn)
                {
                    string[] stritem = item.Split(‘:‘);
                    sbHtml.Append("<td>").Append(ht[stritem[1]]).Append("</td>");
                }
                sbHtml.AppendLine("</tr>");
            }
            sbHtml.AppendLine("</table>");
            HttpContext.Current.Response.Write(sbHtml.ToString());
            HttpContext.Current.Response.End();
        }

        /// <summary>
        /// DataTable导出Excel
        /// </summary>
        /// <param name="data">集合</param>
        /// <param name="dataColumn">字段</param>
        /// <param name="fileName">文件名称</param>
        public static void DataTableToExcel(DataTable data, string[] dataColumn, string fileName)
        {
            HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
            HttpContext.Current.Response.Charset = "Utf-8";
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName + ".xls", System.Text.Encoding.UTF8));
            StringBuilder sbHtml = new StringBuilder();
            sbHtml.AppendLine("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">");
            sbHtml.AppendLine("<table cellspacing=\"0\" cellpadding=\"5\" rules=\"all\" border=\"1\">");
            //写出列名
            sbHtml.AppendLine("<tr style=\"background-color: #FFE88C;font-weight: bold; white-space: nowrap;\">");
            foreach (string item in dataColumn)
            {
                sbHtml.AppendLine("<td>" + item + "</td>");
            }
            sbHtml.AppendLine("</tr>");
            //写数据
            foreach (DataRow row in data.Rows)
            {
                sbHtml.Append("<tr>");
                foreach (string item in dataColumn)
                {
                    sbHtml.Append("<td>").Append(row[item]).Append("</td>");
                }
                sbHtml.AppendLine("</tr>");
            }
            sbHtml.AppendLine("</table>");
            HttpContext.Current.Response.Write(sbHtml.ToString());
            HttpContext.Current.Response.End();
        }