How to code for GRidview shown content depends on id ?

Question

Hai Friends,
i ve the page aspx like below requirements


departuredate = text box,
from = text box,
to = text box,
travel mode= text box,
request_id = text box(visible false)

add(button)

after the add entire details ll shown on Gridview table.

now my requirement is when the request_id generated depends on the details ll show on GridView.
if the request_id nothing gridview ll shown "no record data found"

how to do that?