【ASP.NET】DataTable导出EXCEL,弹窗提示下载保存（完整代码）

        //新建ASPX
        protected void Page_Load(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            DataColumn dc1 = new DataColumn("name", Type.GetType("System.String"));
            DataColumn dc2 = new DataColumn("sex", Type.GetType("System.String"));
            DataColumn dc3 = new DataColumn("age", Type.GetType("System.String"));
            dt.Columns.Add(dc1);
            dt.Columns.Add(dc2);
            dt.Columns.Add(dc3);
            object[, ,] arrStr = { { { "Lily", "Females", "20" } }, { { "Jack", "Males", "25" } }, { { "Bob", "Males", "30" } } };
            for (int i = 0; i < arrStr.GetLength(0); i++)
            {
                for (int j = 0; j < arrStr.GetLength(1); j++)
                {
                    DataRow dr = dt.NewRow();
                    for (int k = 0; k < arrStr.GetLength(2); k++)
                    {
                        dr[k] = arrStr[i, j, k];
                    }
                    dt.Rows.Add(dr);
                }
            }
            DataToExcel(dt, "导出EXCEL" + DateTime.Now.ToString("yyyyMMdd"), null);

        }
        public void DataToExcel(DataTable dt, string FileName, int[] indexs)
        {
            if (dt == null)
                return;
            if (dt.Rows.Count == 0)
            {
                return;
            }
            try
            {
                System.Web.UI.WebControls.GridView GVOutPut= new System.Web.UI.WebControls.GridView();
                GVOutPut.Visible = true;
                GVOutPut.RowDataBound += new GridViewRowEventHandler(RowDataBound);
                GVOutPut.DataSource = dt;
                GVOutPut.DataBind();
                System.Web.HttpContext.Current.Response.Clear();
                System.Web.HttpContext.Current.Response.Buffer = true;
                System.Web.HttpContext.Current.Response.Charset = "UTF-8";
                System.Web.HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName + ".xls", System.Text.Encoding.UTF8));
                System.Web.HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
                System.Web.HttpContext.Current.Response.ContentType = "application/ms-excel";
                GVOutPut.EnableViewState = false;
                System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
                System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
                System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
                GVOutPut.RenderControl(oHtmlTextWriter);
                System.Web.HttpContext.Current.Response.Write(@"<style> .text {mso-number-format:\@; } </style> ");
                System.Web.HttpContext.Current.Response.Write(oStringWriter.ToString());
                System.Web.HttpContext.Current.Response.Flush();
                System.Web.HttpContext.Current.Response.Close();
                GVOutPut.DataSource = null;
                GVOutPut.Visible = false;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        static void RowDataBound(object sender, GridViewRowEventArgs e)
        {
            for (int i = 0; i < e.Row.Cells.Count; i++)
            {
                if (e.Row.RowType == DataControlRowType.DataRow)
                    e.Row.Cells[i].Attributes.Add("style", "vnd.ms-excel.numberformat:@");
            }
        }

 效果如图：