Why we are going for OOALV insted of function modules ?

Question

Why we are going for OOALV insted of function modules. ?
Its very easy to use function modules directly compared to OOALV.
IS there any particular reasons or any advantanges of using ooalv
Thanks & regards,
hari priya

Answer 1

Hi
a) from abap coding point of view,
alv list is done with Function modules,
alv gris can also be done with FM,
but can also be done using OO concepts.
b) Alv grid (using oo concept) requires
designing the screen layout .
Hence, in one screen, we can show more
then one alv grid
(we cannot show more than
one alv list on one screen)
c) ALV grid uses ActiveX controls
present on the Presentation Server.
Hence, it consumes More Memory
on the presentation server.
d) ALV LIST is Display Only.
Whereas
ALV Grid Can Be made EDITABLE for entry purpose.
e) In alv grid, these options are possible,
but not in alv list.
without horizontal lines
without vertical lines
without cell merging during sorts
display total lines above the entries
ALV LIST Can be coded using only FMs
ALV GRID Can be coded using FMs and object oriented concepts
ALV LIST Can be displayed hieraicharlly
ALV GRID cannot be displayed hierarichally
<b>Reward if usefull</b>