download a file from a web page: first time works, next times not

[Fabio Mastria]

Hi all

on a page aspx of my web application (vs2005, .net 2.0), I have an
imagebutton

Its click event looks like this:

filename = createFile(); //create a file on server filesystem

if (File.Exists(filename))
{
Response.Clear();
Response.ContentType = "application/x-download";
Response.AddHeader("Content-disposition", "attachment;filename=" +
Path.GetFileName(filename));
Response.WriteFile(filename);
Response.End();
}

First time user click on the image and download the file -all done, all
ok...

If user retry to click on the image an exception is raised on the row
"Response.End()". The exception is not readable. The message (not the
Message field, but visual studio message) is "Impossible evaluate the
expression because the code is optimized or a native frame is at the start
of the calls stack"

Can Someone tell me how solve this problem?

Thank you all
Fabio

[Fabio Mastria]

Fabio Mastria wrote:

Hi all

But you read me? do you receive this mail ? Or there's some problem in my
windows mail configuration?

[Cubaman]

On Aug 17, 6:47 pm, "Fabio Mastria" <[e-mail]>
wrote:

Hi all

on a page aspx of my web application (vs2005, .net 2.0), I have an
imagebutton

Its click event looks like this:

filename = createFile(); //create a file on server filesystem

if (File.Exists(filename))
{
Response.Clear();
Response.ContentType = "application/x-download";
Response.AddHeader("Content-disposition", "attachment;filename=" +
Path.GetFileName(filename));
Response.WriteFile(filename);
Response.End();

}

First time user click on the image and download the file -all done, all
ok...

If user retry to click on the image an exception is raised on the row
"Response.End()". The exception is not readable. The message (not the
Message field, but visual studio message) is "Impossible evaluate the
expression because the code is optimized or a native frame is at the start
of the calls stack"

Can Someone tell me how solve this problem?

Thank you all
Fabio

Hello Fabio:
Maybe there is some problem in your createFile function, and without
code, i can't help. But I sugest you that if the only use of the file
is for sending to client, create it in memory, what is faster and
allow you to cache it in session fields.
Best regards.