Question

I have to redirect to the same page after a file download !

when i say response.redirect .. it says Cannot redirect after HTTP headers have been sent

can some one help me with this?

i am zipping a file using ionic.zip and downloading it.

PS : Let me know if i have to make my question more clear i can explain 🙁

    Response.Clear();
    Response.BufferOutput = false;
    string filename = "results" + ".zip";
    Response.ContentType = "application/zip";
    Response.AddHeader("content-disposition", "filename=" + filename);

    using (ZipFile zip = new ZipFile())
    {
        zip.AddDirectory(pathhdf.Value);
        zip.Save(Response.OutputStream);
    }

    Response.Close();

   Response.Redirect("Default.aspx"); /// here come my error

Thanks in advance!

Answer 1

You can’t send a redirect header, or any other HTTP headers, after you send HTTP content. In this case your HTTP content is your .zip file, so you can’t send a redirect header after you write the .zip file to the output stream.