the updatepanel does not support <input type="file"except under
certain conditions. if a file is selected, you must do a postback, not
an ajax call. this means the submit button is not a trigger for the
panel. if the trigger is selected, then the filename will be lost and
must be reselected when the panel repaints.
this is because ajax cannot upload a file, only a browser submit can.
-- bruce (sqlwork.com)
Ram wrote:
hi, i'm trying to upload files.
i used <input type=file id=Uploadfile runat=server">.
i have placed the control in Updatepanel(AJAX)
when i'm trying to upload it.. it is showing Object reference is not
set to an instance of an Object.
any suggestions.
