Resetting an HtmlInputFile Control

[Nathan Sokalski]

I have a System.Web.UI.HtmlControls.HtmlInputFile control that I want to
reset after uploading the file. However, all of the properties seem to be
ReadOnly. How can I programmatically reset the control so that the user does
not accidentally upload the same file twice? Thanks.

 

[Lau Lei Cheong]

The control's content will be automatically cleared when the page is posted.
(It's one of the control that will not preserve values)
And I believe a "Form.Reset()" javascript will clear it too.

 

[Alan Silver]

The control's content will be automatically cleared when the page is posted.

(It's one of the control that will not preserve values)
And I believe a "Form.Reset()" javascript will clear it too.

Is there any way to retain the value after postback? I have a form where
I need to do some server-side validation, and if the user chooses a file
and posts, but the server-side validation fails, they are shown the page
again for re-entry of data. Trouble is that the file input control has
now lost its setting, so the user has to choose the file again (if they
notice).

Any suggestions? TIA