Failed - network error when downloading excel file made by EPPlus.dll

Question

I try to download an excel file made by EPPlus.dll from an asp.net c# web form application. but i get Failed - network error. It should be noted that mentioned erro

Answer 1

I had the same problem when I was using Response.Clear() and Response.Close() and had to avoid them to look my code as below which is working.

Response.Buffer = true;
Response.ContentType = mimeType;
Response.AddHeader("Content-Disposition", "attachment; filename=" + nameOfFile);
Response.BinaryWrite(bytes);
Response.End();

Answer 2

I had the same problem and I solved with the code below, note the quotes in filename=\"Name.xlsx\":

Response.Buffer = true;
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AppendHeader("content-disposition", "attachment; filename=\"Name.xlsx\"");
//Writeout the Content  
Response.BinaryWrite(bytes);

Answer 3

I prefer not use response.End() because throw an exception

    protected void DownloadFile(FileInfo downloadFile, string downloadFilename, string downloadContentType)
    {
        Byte[] bin = File.ReadAllBytes(downloadFile.FullName); 

        Response.ClearHeaders();
        Response.ClearContent();
        Response.ContentType = downloadContentType;
        Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", downloadFilename ));
        Response.BinaryWrite(bin);
        Response.Flush();
        Response.SuppressContent = true; 
    }

Answer 4

I am exporting html table code which is in string variable HTML

Following Code Working For Me

byte[] myFile = Encoding.ASCII.GetBytes(HTML);
        Response.Clear();
        Response.Buffer = true;
        Response.AddHeader("Content-Type", "application/excel");
        Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0};", "BAGrowthReport.xls"));
        Response.AddHeader("content-length", myFile.Length.ToString()); //Here is the additional header which is required for Chrome.
        Response.BinaryWrite(myFile);
        Response.Flush();
        Response.Close();

Answer 5

Try this:

using (ExcelPackage p = new ExcelPackage())
{
    //Code to fill Excel file with data.


    Byte[] bin = p.GetAsByteArray();

    Response.ClearHeaders();
    Response.ClearContent();
    Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", Nombre_Del_Libro + ".xlsx"));
    Response.BinaryWrite(bin);
    Response.Flush();
    Response.End();
}