Redirecting to another page after Response.End() has been called in C#

Question

I am exporting a gridview to excel, using .Net 4.0 in a web application, on page load and need for the file to be generated and then the page to be redirected to the calling page. I am running into issues because my code to export to excel is as follows:

gvSummary.Style.Add("font-size", ".6em");
    Response.Clear();
    string attachment = "attachment; filename=filename.xls";
    Response.ClearContent();
    Response.AddHeader("content-disposition", attachment);
    Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    StringWriter sw = new StringWriter();
    HtmlTextWriter htw = new HtmlTextWriter(sw);
    gvSummary.GridLines = GridLines.Horizontal;
    gvSummary.RenderControl(htw);
    Response.Write(sw.ToString());
    Response.End();

I know that if I put the Response.Redirect() before the .End(), I will get redirected but the file is never generated, and if I put the Response.Redirect() after the .End() I get the file but no redirection.

The code written above works just fine in generating the file, however when after the file is generated I am still stuck seeing my Loading animation because I can not break out of the page. Any ideas?

Answer 1

I suggest to add a redirect header. Something like this:

Response.AddHeader("Refresh", "3; url=index.html");

Where 3 is time of the delay and index.html is url you need to redirect to