topic Re: Improper List Navigation in Application Development and Automation Discussions

Improper List Navigation

Former Member — Wed, 11 Feb 2009 13:53:32 GMT

Hi gurus,

I am generating a list screen for Flight data, but in my case, I have provided user with interactive push-buttons on basic list for sorting in ascending and descending order. But, when I press sort-ascending it's displaying the data on another list and further more when I press sort-decending it's displaying the data on another list.

I noticed this problem, when I pressed F3 to get back to selection-screen, rather it took the screen with values sorted in ascending order and then again to basic list.

Can anyone suggest to overcome this.

I wait for your valuable suggestions.

Thankyou.

Re: Improper List Navigation

Former Member — Wed, 11 Feb 2009 13:59:36 GMT

Hello Johny,

help.sap.com is the best temple to search your queries first.

And Johny, don't hesitate to search SCN.

The actual problem is due to not using SY-LSIND EQ listnumber.

Look, basic list number is 0, secondary list is 1.

What you have done is, you coded but forgot to REDEFINE LIST-NUMBER ,

Please read about SY-LSIND system field, which holds list-numbers. It's usually assumed that SY-LSIND is to check list-number in conditions. But, it can also be used to redefine list-numbers.

For example:


PERFORM get_flight_data.
PERFORM put_flight_data.
sy-lsind = 1.               " Re-directing to secondary list.
"or
sy-lsind = 0.               " Re-directing to basic list

PERFORM sort_flight_data_ascending.
PERFORM put_sorted_data.

sy-lsind = 1.

PERFORM sort_flight_data_descending.
PERFORM put_sorted_desc_data.

Try, with this code Johny, hope that would sweep-away your problem.

Thanks: Zahack

Re: Improper List Navigation

Former Member — Wed, 11 Feb 2009 14:02:06 GMT

Hi,

Use the code below...

case sy-ucomm.
  when 'ASCENDING'.
    sy-lsind = sy-lsind - 1.
    <code to sort ascending>
  when 'DSCENDING'.
    sy-lsind = sy-lsind - 1.
    <code to sort ascending>
endcase.

Regards,

Siddarth