Opening window - changing title in code

[google]

I know this topic has been discussed many times all over the web but in my
case although i can make it work in a normal window but it falls flat working
in a window where i generate a PDF from a SQL server report.

The window which i am changing the title for contains the codebehind to
render a sql server report and the following code is where it overrides the
title changing code:
Response.ClearContent();
Response.AppendHeader("content-length", result.Length.ToString());
Response.AppendHeader("content-disposition", "inline: filename=test.pdf");
Response.ContentType = "application/PDF";
Response.BinaryWrite(result);
Response.Flush();
Response.Close();

To test, i commented this part and the title changes. But i cannot comment
this as this is the part which converts the xml rdl into pdf.
Any suggested will be greatly appreciated.

Thanks and regards
Google