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hi gurus what is table control can explin with example

hi gurus what is table control can explin with example

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    author's profile photo Former Member
    Former Member
    Posted on Feb 21, 2008 at 05:27 AM

    Hi,

    A table control is screen CONTROL element which is used to enter multiple data records of the same structure.

    An example of a table control is the screen area/element used to enter the line items in e.g. a purchase order.

    Please refer this help.sap.com [link|http://help.sap.com/saphelp_47x200/helpdata/en/9f/dbac1d35c111d1829f0000e829fbfe/frameset.htm].

    Cheers,

    Aditya

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  • author's profile photo Former Member
    Former Member
    Posted on Feb 21, 2008 at 06:26 AM

    TABLE CONTROL

    These are the screen elements used to display tabular data they can be called

    as screen tables( like STEP LOOP).To use table control we have to create it on the screen using SCREEN PAINTER(SE51) and declare a control variable of TYPE TABLEVIEW using CONTROLS statement in the ABAP program. We have to use LOOP .. ENDLOOP statement in both PBO and PAI with or without AT int_table parameter. IF AT int_table parameter is not used than we have to place a MODULE call between the LOOP...ENDLOOP statement to fill the screen table rows from the ABAP program in PBO and program our own scrolling functions

    using OK_CODE field.

    Having a parallel loop(at screen table rows & int table rows) by using parameter

    AT int_table makes the ABAP code simple.

    A special structure of type CXTAB_CONTROL is used to set/get various

    attributes of table control at runtime like CURRENT_LINE ,TOP_LINE.

    ABAP declaration

    CONTROLS: tab_con TYPE TABLEVIEW USING SCREEN nnnn

    Here tab_con is the same name we used in screen for the table control.

    This ABAP statement will declare a control variable that will be used to access

    the table control , and set it's various attributes like number of fixed columns(tab_con-FIXED_COLS) ,total number of records it will display(tab_con-LINES).It is of type CXTAB_CONTROL and is a deep structure(structure containing structures).

    REFRESH CONTROL tab_con FROM SCREEN nnnn

    This ABAP statement will initialize the table control on the screen nnnn to its initial values.

    PBO processingI

    n PBO we have to use the screen LOOP ...ENDLOOP statement , with or without

    intenal table.

    LOOP WITH CONTROL tab_con.

    MODULE fill_tab_con.

    ENDLOOP.

    Here a module should be called between the loop endloop statement to transfer

    data from th ABAP program to the screen table through a structure.This module

    should use the CURRENT_LINE attribute of the table control variable to get the

    current screen table record index to read the data from the internal table into a work area.

    e.g.

    READ TABLE int_table INDEX tab_con-CURRENT_LINE

    The record read will be placed in the header line of the internal table and will be available to the similarly named screen fields or if these are different it can be written explicitly. e.g.

    screen_field_name = int_table-field_name

    ...

    .

    LOOP AT int_table INTO workarea WITH CONTROL tab_con CURSOR i FROM

    n1 TO n2.

    ENDLOOP.

    Here the module call is not required to fill the screen table.The CURSOR parameter is a integer of type I indicating which absolute internal table line

    should be the first to display on the table control .FROM n1 TO n2 can be used

    to restrict the starting line and ending line number of the internal table , they are of type SY-TABIX.

    In both cases before the LOOP statement a module should be called which

    is generally for setting of status ,in which we should fill the LINES attribute

    (tab_con-LINES ) of the control with the total number of internal table records,doing this ensures correct and automatic scrolling.

    The ABAP statement DESCRIBE TABLE int_table LINES lines can be used

    to get the total lines in an int table.

    PAI Processing

    We have to use LOOP ... ENDLOOP in PAI so that data can transfer fro table control to ABAP program. If we want to write changes to the data we should

    call a module between the LOOP ... ENDLOOP. The MODULE call to process user commands (SY-UCOM) should be called after the ENDLOOP statement.

    e.g.

    PROCESS AFTER INPUT

    MODULE mod AT EXIT-COMMAND.

    LOOP AT itab_table or LOOP "depending on whether we are using AT int_table

    MODULE modify_int_table.

    ENDLOOP.

    MODULE user_command.

    In the MODULE call modify_int_table we can use

    MODIFY int_table FROM workarea INDEX tab_con-CURRENT_LINE

    or we can use

    int_table-field_name = screen_field_name.

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