Subform - update a field while adding/deleting a row and send these values into another form

Subform - update a field while adding/deleting a row and send these values into another form

Hi,

I am using a subform for uploading multiple documents.  So In my subform, I have two fields #No,fileupload fields.  On adding/delete a row the #no. has to be adjusted accordingly. 

And also, I have to insert these values into another form.  How can I do that?