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Asked: 2026-05-16T16:51:05+00:00

I want to export the data from a DaraGrid into an Excel file. Having

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I want to export the data from a DaraGrid into an Excel file. Having these data in a french language
Here you are my method:

public static void ExportGridView( DataGrid dataGrid, string fileName)
    {
        HttpResponse m_Response = HttpContext.Current.Response;
        m_Response.Clear();
        m_Response.AddHeader("content-disposition",
            string.Format("attachment;filename={0}", fileName));
        m_Response.Charset = "";           
        m_Response.ContentType = "application/octet-stream"; //"application/vnd.xls";
        m_Response.ContentEncoding = Encoding.UTF32;
        StringWriter stringWrite = new StringWriter();
        HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
        dataGrid.RenderControl(htmlWrite);
        m_Response.Write(stringWrite.ToString());
        m_Response.End();

}

Otherwise the output isn’t in a the good French format

Ex )

Engagé => engagé

Société => Société

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1 Answer

  1. Editorial Team

    Try using ISO-8859-1:

    public static void ExportGridView(DataGrid dataGrid, string fileName)
{
    var response = HttpContext.Current.Response;
    response.Clear();
    response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName));
    var isoEncoding = Encoding.GetEncoding("iso-8859-1");
    response.Charset = isoEncoding.WebName;
    response.ContentType = "application/vnd.ms-excel";
    response.ContentEncoding = isoEncoding;
    using (var writer = new StringWriter())
    using (var htmlWriter = new HtmlTextWriter(writer))
    {
        dataGrid.RenderControl(htmlWriter);
        response.Write(writer.GetStringBuilder().ToString());
    }
    response.End();
}

    Another alternative and probably better is to generate an entire HTML page and specify the UTF8 encoding which IMHO is better:

    public static void ExportGridView(DataGrid dataGrid, string fileName)
{
    var response = HttpContext.Current.Response;
    response.Clear();
    response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName));
    response.Charset = Encoding.UTF8.WebName;
    response.ContentType = "application/vnd.ms-excel";
    response.ContentEncoding = Encoding.UTF8;
    using (var writer = new StringWriter())
    using (var htmlWriter = new HtmlTextWriter(writer))
    {
        dataGrid.RenderControl(htmlWriter);
        string html = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\"><html xmlns=\"http://www.w3.org/1999/xhtml\"><head><title>Test</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" /></head><body>{0}</body></html>";
        response.Write(string.Format(html, writer.GetStringBuilder()));
    }
    response.End();
}
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