资源：excelService 服务 http://download.csdn.net/detail/istend/8060501

• 排列问题

导出时，数字和字符的排列格式默认不一样，数字靠右，字符靠左，想让排列一致，有两个办法：

1 在绑定时，就做固定格式

2 导出时，将数字那一列转换为文本格式，如下

protected void myGridView_RowDataBound(object sender, GridViewRowEventArgs e)  {              if (e.Row.RowType == DataControlRowType.DataRow)              {  //让数字以文本形式表示                   e.Row.Cells[4].Attributes.Add("style", "vnd.ms-excel.numberformat:@");  }  }  

• 转换函数

        /// <summary>        /// 导出按钮        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void btnExport_Click(object sender, System.Web.UI.ImageClickEventArgs e)        {            //导出文件名            string strFileName = "报表.xls";            //取原始数据，并绑定            this.dagInfo.AllowPaging = false;            this.dagInfo.AllowSorting = false;            DataTable dt = BingData();            this.dagInfo.DataSource = dt;            this.dagInfo.DataBind();            //使用本页面直接输出            WHPT_WebApp.Statistics.GridStyleReport.ToExcel(this.dagInfo                , strFileName,                delegate(System.Web.UI.HtmlTextWriter writer)                {                    writer.Write(string.Format("<table width=100%><tr><td align=center colspan=5>{0}</td></tr></table>", "报表"));                }                , null);            //恢复分页数据            this.dagInfo.AllowPaging = true;            this.dagInfo.AllowSorting = true;            BindInfo(1, "");            return;        }        #endregion

        /// <summary>        /// 转换成EXCEL        /// </summary>        /// <param name="ctl"></param>        /// <param name="file_name"></param>        public static void ToExcel(System.Web.UI.Control ctl, string file_name,RenderCallBack beforeRende,RenderCallBack afterRender)        {            //将控件数据导出成Excel文件            if (string.IsNullOrEmpty(file_name))                return;            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(file_name, System.Text.Encoding.UTF8));            HttpContext.Current.Response.Charset = "GB2312"; //"UTF-8";				            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default;            HttpContext.Current.Response.ContentType = "application/ms-excel";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword            ctl.Page.EnableViewState = true;            System.IO.StringWriter tw = new System.IO.StringWriter();            System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);            if (beforeRende != null)                beforeRende(hw);            ctl.RenderControl(hw);            if (afterRender != null)                afterRender(hw);            HttpContext.Current.Response.Write(GetHtmlHeadText(tw.ToString()));            HttpContext.Current.Response.End();        }

PS：此文仅做记录交流所用，不做他用

C#：excel导入导出