Capturing changed data when we press enter in ALV OOPS

[Former Member]

Hi Folks,

            I have built an editable ALV using object oriented approach. when i change data and press SAVE button directly, i can capture the changes by using the method CALL METHOD g_grid->refresh_table_display..

          But after changing the data, if i press enter and then press SAVE button, changed data is not captured into my internal table.

           Could any body suggest whats the problem.

             Thanks,

               Shyam.

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Message was edited by: Suhas Saha

[Former Member]

Hi.

Please try comparing your code with the code given in the below wiki link and see if there are any discrepancies.

http://wiki.sdn.sap.com/wiki/display/Snippets/ALV-Editing+and+saving+the+edited+values+in+Database(O...)

[Kiran_Valluru]

Hi,

use method check_changed_data of CL_GUI_ALV_GRID.

like,

take one more itab if required to compare.

data itab_old type standart table of <table>
itab_old[] = itab[].
lr_grid->set_table_for_first_display( .......... ).
when SAVE.
 lr_grid->check_changed_data( ).
if itab_old[] <> itab[]
Update Database.
endif.

Hope this helps u.,

Thanks & Regards,

Kiran.         

[kranthi_kiran5]

To make the ALV column as editable in runtime we need to set the field EDIT  as part of

field catalog generation.

• Whenever the user modifies ALV cell values in runtime and to reflect to change in data

         base table we need to handle the event  HANDLE_DATA_CHANGED of the class

         CL_GUI_ALU_GRID this event is triggered enter key in the modified cell.

• By default DATA_CHANGED is not triggered it must be registered explicitly by calling

         the method REGISTER_EDIT_EVENT of a class CL_GUI_ALV_GRID.

• As part of event  DATA_CHANGED  we need to import the parameters ER_DATA_CHANGED  it is a parameter which is the object of the class CL_GUI_CHANGE_DATA_PROTOCOL.
• As part of the above class we need to use instance attribute MT_MOD_CELLS (OR)

         MT_GOODS_CELLS  which are of type  LVC_T_MODI. It is table type associated  with the              structure LVC_S_MODI.

• These attributes contains a information related to be modified cell the information include

        row id, field name, and value.

this is some sample which includes all the functionality PFA