confusion in file uploading in asp.net with c#

Question

hello friends,

 in my application thr is one page named detailinfo.aspx
 

--   in this page there are some controls and also asp:fileupload control..
 

-- the data coming from database table for updating..
 

  here m getting confused...tht
 

    > page has asp:fileupload with upload button... & also save button which saves control's data into databse.. i want to save the filename into the database table while clicking on save button..
 

  > the page is haveing updatepanel...
  ---thts y the file name is not updated into the database table..(i saw the value is blank due to updatepanel's triggering event for tht upload button..!!!)
 
 

plz tell me wht excactly i have to do?
 

 
thanks in advance..!!