topic Re: LOOP AT SCREEN in Application Development and Automation Discussions

LOOP AT SCREEN

Former Member — Tue, 13 May 2008 10:46:08 GMT

Hi,

i want to populate an itab with values entered thru the screen...

i am havng a selection screen with one parameter ... what event shld i use to loop at that screen until all data is enterd?

Can any one help me?

Arathy.

Re: LOOP AT SCREEN

Former Member — Tue, 13 May 2008 10:51:52 GMT

Hi,

For selection screen u have to use at selection screen output event

and for loop screen use the structure - screen

Re: LOOP AT SCREEN

Former Member — Tue, 13 May 2008 10:56:09 GMT

Whats wrong in this pgm segment...

I think after viewing this code segment u'll hav a better understanding of what I asked?

SELECTION-SCREEN BEGIN OF BLOCK SO .

parameters:num type i default 2.

SELECTION-SCREEN END OF BLOCK SO.

data:begin of itab occurs 0,

n type i,

end of itab,

wa like line of itab.

at selection-screen .

start-of-selection.

LOOP AT SCREEN.

if num eq 3.

leave screen.

else.

wa-n = num.

append itab.

endif.

ENDLOOP.

loop at itab.

write itab-n.

endloop.

Re: LOOP AT SCREEN

Former Member — Tue, 13 May 2008 10:59:41 GMT

Your loop at screen should be used in at selection screen event not in start of selection.

Thanks,

Re: LOOP AT SCREEN

Former Member — Tue, 13 May 2008 11:23:48 GMT

Arathy,

Your best solution here is to call the screen and not use the selectoin screen.


  START-OF-SELECTION.

  CALL SCREEN 100.

Then do your processing in Screnn 100 through the PBO and PAI modules.

Re: LOOP AT SCREEN

Former Member — Tue, 13 May 2008 15:49:50 GMT

Hi,

I modified your code little bit.

Do like this.

SELECTION-SCREEN BEGIN OF BLOCK SO .

parameters:num type i default 2.

SELECTION-SCREEN END OF BLOCK SO.

data:begin of itab occurs 0,

n type i,

end of itab,

wa like line of itab.

at selection-screen .

wa-n = num.

append wa to itab.

loop at itab.

write / itab-n.

endloop.

No need of "loop at screen" here.

Loop at screen will be used mainly in AT SELECTION-SCREEN OUTPUT event.

Regards

Sandeep Reddy.

Re: LOOP AT SCREEN

Former Member — Wed, 14 May 2008 07:04:24 GMT

Thnks for all who helped me in one way or other.I think I failed to convey my need to all.

I got a solution to my pblm thru select-options.

Below is the code segment.

DATA: BEGIN OF ITAB OCCURS 0,

MYCITY(20),

END OF ITAB.

DATA CITY(20).

SELECT-OPTIONS CTY FOR CITY .

LOOP AT CTY.

MOVE CTY-LOW TO ITAB-MYCITY.

APPEND ITAB.

ENDLOOP.

LOOP AT ITAB.

WRITE ITAB-MYCITY.

ENDLOOP.