RE: FileUpload - keep the filename

Hi;

My problem is as follows. We have two buttons that will do a post back where
we need to read the file, but we stay on the same page. One is a "test"
button that verifies the format of the file is good (must be rtf or wordml)
and one parses the file for some data that is then displayed on the page.

The problem we have is users click that button, see the filename disappear,
and think the page has lost the file. Any suggestion on how to handle this so
users don't think we lost the file?

--
thanks - dave
david_at_windward_dot_net
http://www.windwardreports.com



"Steven Cheng[MSFT]" wrote:

Hi Dave,

As for the fileupload control, it won't persist the filename after the post
in which the file stream is uploaded. This is because the file stream only
exists in the postback of the uploading post, after that , no filestream
exists in the request, so there is no reason to persist the filename any
longer. This also confirm to the html <input type="file" ...> element's
natural behavior. BTW, if you do need to persist the filename(of the
latest uploaded file), you can consider manually store it in the fileupload
control's attributes colleciton for sequential use. For example:

======================
protected void btnSubmit_Click(object sender, EventArgs e)
{
if (fu1.HasFile && fu1.FileName != null)
{
fu1.Attributes["filename"] = fu1.FileName;
}
}
=======================

then, in later postback, we can access the value through
fu1.Attriburtes["filename"]

Hope this helps you.


Regards,

Steven Cheng
Microsoft Online Community Support


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