从gridview导出后打开excel文件时出现警告消息

本文关键字：文件 excel 警告 消息 gridview | 更新日期: 2023-09-27 18:00:19

我已经编写了导出数据的代码，但在打开excel文件时遇到警告消息，默认情况下文件保存为.html扩展名

警告-"您正在以不同于文件扩展名指定的格式打开的文件"

我需要保存扩展名为.xls的文件请帮我

  private void ExportToExcel(DataTable dt)
  {
 string fileName = "FileName" + DateTime.Now.ToString("MMddyyyy_HHmmss") + ".xls";
        Response.AddHeader("content-disposition", "attachment;filename=" + fileName);
        //Response.AddHeader("content-disposition", "attachment;filename=Filename .xls");
        Response.ContentType = "application/vnd.ms-excel";
        StringWriter stringWriter = new StringWriter();
        HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWriter);
        DataGrid dataExportExcel = new DataGrid();
        dataExportExcel.ItemDataBound += new DataGridItemEventHandler(dataExportExcel_ItemDataBound);
        dataExportExcel.DataSource = dt;
        dataExportExcel.DataBind();
        dataExportExcel.RenderControl(htmlWrite);
        System.Text.StringBuilder sbResponseString = new System.Text.StringBuilder();
        sbResponseString.Append("<html xmlns:v='"urn:schemas-microsoft-com:vml'" xmlns:o='"urn:schemas-microsoft-com:office:office'" xmlns:x='"urn:schemas-microsoft-com:office:xlExcel8'" xmlns='"http://www.w3.org/TR/REC-html40'"> <head></head> <body>");
        sbResponseString.Append(stringWriter + "</body></html>");
        Response.Write(sbResponseString.ToString());
        Response.End();
}

从gridview导出后打开excel文件时出现警告消息

使用这个-http://www.gemboxsoftware.com/spreadsheet/overview

看起来像这样在使用：

// Create new Excel file.
var excelFile = new ExcelFile();
excelFile.Worksheets.Add(dt.TableName).InsertDataTable(dt, 0, 0, true);
// Save Excel file to XLS format.
excelFile.SaveXls(dataSet.DataSetName + ".xls");
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