grid view related problem

Question

hello,

i am facing some problem to retrieve some records..

i am using a table in which records are as like below.

hotelid  hotel name  facility  amenity  room
---------------------------------------------
1  abc  1,2  2,3  3,4
2  bcs  4,5  6,7  4

when we click on highlighted hyperlink, then following table will be open-

roomid  room  amenity 
-------------------------
3   abc  1,2 
2  bcs  4,5 

again, when we click on highlighted hyperlink, then following table will be open-

amenityid  room  amenity   cost  
---------------------------------------------
1  abc  ghh  567
2  bcs  ythd  5676

my problem is that my facility & amenity columns hyperlinks are working properly..but everytime when i click on room hyperlink record.. it gives some error in gridview_rowdata bound on room page while it should have to firdtly go to page load but it goes directly to roompage's rowdata bound event.. i dont know why it is happening..?

please help me..
i am sending you my coding files as well..
please can resolve my problem..
i' ve to submit this today.
please reply me..

thank you.