Asp.net(c#)匯出有表格線的Excel

最後更新：2018-12-06 來源：互聯網

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表格用檔案流的方式輸出為excel。執行個體代碼如下：

Code
        public static void DaochuTalbe(string TableInnerHtml, string filename)
        {
            StringWriter sw = new StringWriter();
            sw.WriteLine(TableInnerHtml);
            sw.Close();
            System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + filename + ".xls");
            System.Web.HttpContext.Current.Response.ContentType = "application/ms-excel";
            System.Web.HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF7;
            System.Web.HttpContext.Current.Response.Write(sw);
            System.Web.HttpContext.Current.Response.End();
        }

這種方法的從本質上說並非標準的excel格式，不過把html格式的檔案另存新檔excel的格式，然後用excel開啟罷了。

開啟後會發現匯出的excel無表格線，白白的一片，太難看了。

通過分析excel的格式代碼，我嘗試在程式裡增加帶表格線的excel頭部代碼，結果順利匯出有表格線的excel.

增加的代碼如下：

Code
      /// <summary>
        /// Excel頭部
        /// </summary>
        /// <returns></returns>
        public static string AddExcelHead()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">");
            sb.Append(" <head>");
            sb.Append(" <!--[if gte mso 9]><xml>");
            sb.Append("<x:ExcelWorkbook>");
            sb.Append("<x:ExcelWorksheets>");
            sb.Append("<x:ExcelWorksheet>");
            sb.Append("<x:Name></x:Name>");
            sb.Append("<x:WorksheetOptions>");
            sb.Append("<x:Print>");
            sb.Append("<x:ValidPrinterInfo />");
            sb.Append(" </x:Print>");
            sb.Append("</x:WorksheetOptions>");
            sb.Append("</x:ExcelWorksheet>");
            sb.Append("</x:ExcelWorksheets>");
            sb.Append("</x:ExcelWorkbook>");
            sb.Append("</xml>");
            sb.Append("<![endif]-->");
            sb.Append(" </head>");
            sb.Append("<body>");
            return sb.ToString();

        }

Code
        /// <summary>
        /// Excel尾部
        /// </summary>
        /// <returns></returns>
        public static string AddExcelbottom()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("</body>");
            sb.Append("</html>");
            return sb.ToString();
        }

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