My first thought would be :
- don't include the "name" attribute. Controls without the name attribute
shouldn't post their values. This way the file shoudn't be uploaded either.
- on the onsubmit event, copy the value of the htmlInputFile to an hidden
text box so that the name is still posted...
In the worst case you could try also to use this event to clear totally the
input type=file tag from the HTML form so that it is not posted (it should
hopefully really prevent the file from being uploaded)...
Hope it helps....
Actually I finally made quick client side test using ASP. My web browser is
IE 6:
- with the default enctype, the file is NOT posted (make sure you don't have
a browser cache problem or whatever).
If I'm using enctype="multipart/form-data" the file is posted.
I can still avoid to send its content by not using the name attribute on the
input type=file tag. My final code is (ASP). Note though that the file part
file is still here (Request.Files.count will still return a file) but there
is no content in beetween (no content sent, you'll seee an empty file server
side).
The final HTML code is (you may want to test other browsers) :
<%@ Language=VBScript %>
<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
</HEAD>
<BODY>
<%
Response.BinaryWrite Request.BinaryRead(Request.TotalBytes)
%>
<FORM action="tst.asp" method="post"
onSubmit="hiddenfilename.value=filename.value"
enctype="multipart/form-data">
<INPUT type="file" id="filename">
<INPUT type="textbox" id="hiddenfilename" name="hiddenfilename">
<INPUT Type="submit">
</FORM>
</BODY>
</HTML>
--
"Ariel Dolan" <ar******@netvision.net.il> a écrit dans le message de
news:c1**********@news2.netvision.net.il...
Thank you for your answer.
I removed the enctype attribute but it did not help. The file is still
uploaded.
Can you explain the second option you suggested. How do I prevent the
HtmlInputFile control from uploading the file? The file name is displayed in
the control's text box, but as soon as I activate any button, the file gets
uploaded. I can copy the file name to a textbox, but this can be carried out
only after uploading is complete. The uploading seems to be activated before
any action initiated by the code.
Thanks again,
Ariel
--
================================================== =============
Ariel Dolan
ar******@netvision.net.il
Artificial Life and other Experiments
http://www.aridolan.com
http://www.arieldolan.com
================================================== =============
"Patrice Scribe" <no****@nowhere.com> wrote in message
news:u2*************@TK2MSFTNGP10.phx.gbl... Never tried this but if you use the usual enctype instead
multipart/form-data, I believe the file will not be uploaded....
Another option would be to copy the file name into an hidden textbox and
to prevent posting of this particular field (by clearing this node for a
radical solution to just clearing the name attribute or disabling the
control).
Let us know.
Patrice
--
"Ariel Dolan" <ar******@netvision.net.il> a écrit dans le message de
news:%2****************@tk2msftngp13.phx.gbl... Can I use HtmlInputFile to only get the selected file name but not
actually upload the file?
Clicking the control's Browse button let's the user select a file. All I
need is the HtmlInputFile Value property. However, any button clicked on
the Html page results in uploading the selected file. Is there a way to
avoid the actual uploading?
Alternatively, is there any other way to let a user select a file name
from his local disk?
Thanks,
Ariel
--
==================================================
Ariel Dolan
ar******@netvision.net.il
Artificial Life and other Experiments
http://www.aridolan.com
http://www.arieldolan.com
==================================================
