Value does not stay in screen in screen painter after clicking enter

Question

Hi abapers,
I have created a table control in screen painter .My problem is that after entering 1 row of values and press enter the value gets vanished.it doesn stay in screen .What may be the problem?? Have any of abapers gone through this scenario. Please paste a code snippet if possible.
Regards,
Navin

Answer 1

Hi,
What you need to do is to modify the internal table from table control whenever any user action is performed.
it_zekpo is my internal table w/o header line,
wa_zekpo is work area.
Name of input/output fields on screen are:-
wa_zekpo-field1,
wa_zekpo-field2, and so on...
At screen flow-logic
PROCESS BEFORE OUTPUT.
*  MODULE status_8003.
  LOOP WITH CONTROL po_tb.
    MODULE read_data. "<--read data into table control from internal table
  ENDLOOP.
PROCESS AFTER INPUT.
*  MODULE user_command_8003.
  LOOP WITH CONTROL po_tb.
    MODULE modify_data. "<--modify internal table from table control
  ENDLOOP.
In PBO
*&      Module  READ_DATA  OUTPUT
MODULE read_data OUTPUT.
  READ TABLE it_zekpo INTO wa_zekpo INDEX po_tb-current_line. "po_tb is table control name
  data : line_count type i.
  describe it_zekpo
  lines line_count.
  po_tb-lines = line_count + 10.
  "to increase the number of lines in table control dynamically
ENDMODULE.                 " READ_DATA  OUTPUT
In PAI
*&      Module  MODIFY_DATA  INPUT
MODULE MODIFY_DATA INPUT.
  MODIFY IT_ZEKPO FROM WA_ZEKPO INDEX po_tb-currentline.
  "this will modify the contents of existing line into internal table
ENDMODULE.                 " MODIFY_DATA  INPUT
Hope this helps you,
Regards,
Tarun