Strategy for "your file is uploading" message

[Jared]

I'd like to display a "please wait while your file is uploading" page
immediately after someone uploads a large-ish file. I know I could
make something really slick with DHTML, or even something semi-slick
using a hidden frame to post the form to. However, both of these
approaches carry browser-compatibility risks.

It's my understanding that my server-side code doesn't execute until
the file is completely received by IIS, so I can't send any HTML back
to the client until after the upload is complete -- which is obviously
too late.

Does anyone have any cross-browser-safe methods for providing a "please
wait" message while a file is uploading?

TIA
Jared

 

[Guest]

There are loads of them! Just let your fingers and mouse do the searching on
"ASP.NET Progress".
Peter

 

[Juan T. Llibre]

Check out Dave and Al's chapter 3 solutions...

http://www.daveandal.net/books/6744/samples.aspx

 

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

There is no method without using Javascript. As you said, you can't send
anything back from the server until the upload is complete.

 

[Tasos Vogiatzoglou]

Jared,

If you upload the file using an asynchronous handler, you can use only
server-side code to display a status bar by checking the status of the
upload. You only have to set a meta header http-equiv to refresh the
page in an interval.

Google for "asynchronous file upload" or post a question for code.

Regards,
Tasos.

 

[Jared]

I neglected to mention that this is being hosted by a third party, so
the file upload must be handled natively by ASP.NET. I guess I'll just
post the upload to a hidden frame and use javascript to show a "please
wait" message. That seems to be the solution least likely to create
browser-compatibility issues.

Thanks for the suggestions.
Jared