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Is there any way to retain the value of an HtmlInputFile control through a
postback?

I do some server side validation on the page when it is submitted and if an
error occurs on the page the HtmlInputFile control value is blank after the
postback. The EnableViewState for the control is set to true. I can't put
the postedFile.filename value in a hidden control and then put it back into
the HtmlInputFile control on postback because the postedFile.filename and
the value properties are read-only.

Any ideas?

Thanks in advance

David

No for security reasons.

You could probably still perhaps do tricky things such as using (inline)
frames (allowing to keep a part that doesn't get refreshed).

Patrice

--

"Dave Adler" <> a écrit dans le message de
news:...
> Is there any way to retain the value of an HtmlInputFile control through a
> postback?
>
> I do some server side validation on the page when it is submitted and if
an
> error occurs on the page the HtmlInputFile control value is blank after
the
> postback. The EnableViewState for the control is set to true. I can't put
> the postedFile.filename value in a hidden control and then put it back
into
> the HtmlInputFile control on postback because the postedFile.filename and
> the value properties are read-only.
>
> Any ideas?
>
> Thanks in advance
>
> David
>
>

Hi,

no there isn't as this is security related (if you could write to it, you
could theoretically upload files from client without user knowing that)

--
Teemu Keiski
MCP, Microsoft MVP (ASP.NET), AspInsiders member
ASP.NET Forum Moderator, AspAlliance Columnist

"Dave Adler" <> wrote in message
news:...
Is there any way to retain the value of an HtmlInputFile control through a
postback?

I do some server side validation on the page when it is submitted and if an
error occurs on the page the HtmlInputFile control value is blank after the
postback. The EnableViewState for the control is set to true. I can't put
the postedFile.filename value in a hidden control and then put it back into
the HtmlInputFile control on postback because the postedFile.filename and
the value properties are read-only.

Any ideas?

Thanks in advance

David

you shouldn't do much serverside validation on HtmlInputFile , as the file
is actually uploaded, you shouldn't require a second upload. at least cache
the file, and do secondary processing after.

-- bruce (sqlwork.com)


"Dave Adler" <> wrote in message
news:...
> Is there any way to retain the value of an HtmlInputFile control through a
> postback?
>
> I do some server side validation on the page when it is submitted and if
an
> error occurs on the page the HtmlInputFile control value is blank after
the
> postback. The EnableViewState for the control is set to true. I can't put
> the postedFile.filename value in a hidden control and then put it back
into
> the HtmlInputFile control on postback because the postedFile.filename and
> the value properties are read-only.
>
> Any ideas?
>
> Thanks in advance
>
> David
>
>