Sample code on how to populate data in DropDownListbox

Hi all
i am new to the webdynpro for java.
i have one UI element called DropDownListBox and i want to populate some desired values to the dropdown list box.
what are the different ways are there to populate data in DropDownList box.
for example i have city as dropdownlist box and i want to populate some values in drop downlistbox like bangalore,hyderabad,chennai and delhi,
can you pls send the sample code on the same?
Regards
Suresh Babu

Hi,
If you want to retrieve the city names then you can use the standard tables in R/3.
We have countries list in T500T. Like this we have table for the cities also.
Or
You can manually populate a table and bind this table to the list box.
Please check out this link -
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/ded11778-0801-0010-258f-ac3b9408a194
http://help.sap.com/saphelp_nw70/helpdata/EN/74/450e8af57065468e88e4b86de47e4b/frameset.htm
Regards
Lekha

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Dear Experts.
I am new to ABAP and hence trying jmy hands on various ways of peforming a task.
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The fields of ZLT_Kunde are: K1, K2, K3
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I am unbale to get how to do that.
I need your valuable suggstions.
Regards
Chandan

And the code of the MPP is:
*& Module Pool       SAPMZDEMO_MPOOL_03
PROGRAM SAPMZDEMO_MPOOL_03.
TABLES: ZLT_MITA, ZLT_Kunde, ZLT_Auftrag, Zlt_Stdsatz.
DATA: flg_lock TYPE c,
*      indx TYPE i,
*      indxk TYPE i,
*      indxa TYPE i,
*      TCNT TYPE sy-tabix,
      lv_msgv1 TYPE sy-msgv1.
*DATA: it_mita    TYPE TABLE OF ZLT_mita,
*      it_kunde   TYPE TABLE OF ZLT_KUNDE,
*      it_auftrag TYPE TABLE OF ZLT_AUFTRAG.
*&      Module STATUS_9000 OUTPUT
*       text
module STATUS_9000 output.
SET PF-STATUS 'ZSTATUS01'.
* SET TITLEBAR 'xxx'.
If flg_lock is Not initial.
    LOOP at Screen.
If screen-group1 = 'G1'.
Screen-input = 0.
MODIFY SCREEN.
       Endif.
    ENDLOOP.
      MESSAGE s000(8i) WITH 'Mitarbeiter already locked by user' lv_msgv1.
ENDIF.
endmodule.                 " STATUS_9000 OUTPUT
*&      Module USER_COMMAND_9000 INPUT
*       text
module USER_COMMAND_9000 input.
*To Populate Data into Mitarbeiter through Pushbuttons
CASE sy-ucomm.
    When 'OK_GET'.
      Clear : flg_lock.
        IF ZLT_MITA-M1 is NOT INITIAL.
            SELECT SINGLE *
            FROM ZLT_MITA
            Where M1 = ZLT_MITA-M1.
*To create a Lock Object so that when two or more employees are accessing the same data
* at the same time then for the new user the data gets locked and only can been seen in
*display mode
        IF sy-subrc = 0.
        CALL FUNCTION 'ENQUEUE_EZLT_MITALOCK'
         EXPORTING
           MODE_ZLT_MITA        = 'E'
           MANDT                = SY-MANDT
           M1                   = ZLT_MITA-M1
*           X_M1                 = ' '
*           _SCOPE               = '2'
*           _WAIT                = ' '
*           _COLLECT             = ' '
         EXCEPTIONS
           FOREIGN_LOCK         = 1
           SYSTEM_FAILURE       = 2
           OTHERS               = 3
        IF sy-subrc <> 0.
          flg_lock = 'X'.
          lv_msgv1 = sy-msgv1.
        ENDIF.
        ENDIF.
        ELSE.
            MESSAGE S000(8i) With 'Enter Mitarbeiter Name'.
        ENDIF.
    When 'OK_SAVE'.
       Modify ZLT_MITA.
       IF sy-subrc = 0.
         MESSAGE s000(8i) With 'Data Saved'.
       ENDIF.
    When 'OK_DELETE'.
        IF ZLT_MITA-M1 is NOT INITIAL.
            DELETE
            FROM ZLT_MITA
            Where M1 = ZLT_MITA-M1.
          IF sy-subrc = 0.
            MESSAGE S000(8i) With 'Data deleted'.
          ENDIF.
        ENDIF.
*     When 'OK_FIRST'.
*           indx = 1.
*     When 'OK_NEXT'.
*           indx = indx + 1.
*     When 'OK_PREV'.
*           indx = indx - 1.
*     When 'OK_LAST'.
*           Describe Table it_mita lines indx.
*To Populate Data into Kunde through Pushbuttons
    When 'OK_GETK'.
        IF ZLT_Kunde-K1 is NOT INITIAL.
            SELECT SINGLE *
            FROM ZLT_Kunde
            Where K1 = ZLT_KUNDE-K1.
        ELSE.
            MESSAGE S000(8i) With 'Enter Kunde Name'.
        ENDIF.
    When 'OK_SAVEK'.
       Modify ZLT_Kunde.
       IF sy-subrc = 0.
         MESSAGE s000(8i) With 'Data Saved'.
       ENDIF.
    When 'OK_DELETEK'.
        IF ZLT_KUNDE-K1 is NOT INITIAL.
            DELETE
            FROM ZLT_KUNDE
            Where K1 = ZLT_KUNDE-K1.
          IF sy-subrc = 0.
            MESSAGE S000(8i) With 'Data deleted'.
          ENDIF.
        ENDIF.
*To Populate Data into Auftrag Through Pushbuttons
    When 'OK_GETA'.
        IF ZLT_KUnde-K2 is NOT INITIAL.
            SELECT SINGLE *
            FROM ZLT_Auftrag
            Where A3 = ZLT_Kunde-K2.
        ELSE.
            MESSAGE S000(8i) With 'Enter Kunde Name'.
        ENDIF.
    When 'OK_SAVEA'.
       Modify ZLT_Auftrag.
       IF sy-subrc = 0.
         MESSAGE s000(8i) With 'Data Saved'.
       ENDIF.
    When 'OK_DELETEA'.
        IF ZLT_Auftrag-A1 is NOT INITIAL.
            DELETE
            FROM ZLT_Auftrag
            Where A1 = ZLT_Auftrag-A1.
          IF sy-subrc = 0.
            MESSAGE S000(8i) With 'Data deleted'.
          ENDIF.
        ENDIF.
*To Populate Data into Position Thorugh Pushbuttons
    When 'OK_GETP'.
        IF ZLT_Auftrag-A2 is NOT INITIAL.
            SELECT SINGLE *
            FROM ZLT_Auftrag
            Where A3 = ZLT_Kunde-K2.
        ELSE.
            MESSAGE S000(8i) With 'Enter Kunde Name'.
        ENDIF.
    When 'OK_SAVEP'.
       Modify ZLT_Auftrag.
       IF sy-subrc = 0.
         MESSAGE s000(8i) With 'Data Saved'.
       ENDIF.
    When 'OK_DELETEP'.
        IF ZLT_Auftrag-A1 is NOT INITIAL.
            DELETE
            FROM ZLT_Auftrag
            Where A1 = ZLT_Auftrag-A1.
          IF sy-subrc = 0.
            MESSAGE S000(8i) With 'Data deleted'.
          ENDIF.
        ENDIF.
    When 'OK_EXIT'.
       Leave Program.
    When 'OK_CLEAR'.
      Clear : ZLT_MITA, ZLT_KUNDE, ZLT_AUFTRAG.
*              it_mita, it_kunde, it_auftrag,
      CALL FUNCTION 'DEQUEUE_EZLT_MITALOCK'
       EXPORTING
         MODE_ZLT_MITA       = 'E'
         MANDT               = SY-MANDT
         M1                  = ZLT_MITA-M1
*         X_M1                = ' '
*         _SCOPE              = '3'
*         _SYNCHRON           = ' '
*         _COLLECT            = ' '
ENDCASE.
endmodule.                 " USER_COMMAND_9000 INPUT
*&      Module user_cmd_9000 INPUT
*       text
module user_cmd_9000 input.
If sy-ucomm = 'OK_CANCEL'.
LEAVE PROGRAM.
ENDIF.
IF sy-ucomm = 'OK_EXIT'.
      LEAVE PROGRAM.
ENDIF.
endmodule.                 " user_cmd_9000 INPUT

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hi
i am deepak .
i am very new to JSF.
my problem is i want to populate data in the datatable on the combo box change event.
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i am using a combo box and i am assigning cityName from the SDO.
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private String cityName;
public void setCityName(String cityName){
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public String getCityName(){
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Hi all,
I am quite new with ViewObject.
I have one data table which is binding with view object.
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actually i try to get view object as in the following. but i get only null.
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Hi,
You could use the following code snippet to get handle to view object from the iterator.
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Hi
I have a field(VGBEL) in the data source 2LIS_11_VAITM, but i do not have data in it. I will have to populate data into it for that, I guess i need to write some ABAP code .My question is where should i write the code.
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*do assign points for helpfull answers.
Message was edited by:
ravi kiran naalla

How to populate data in table control .

hi all,
i put matnr no. in screen no. 103
validation is done at that screen only.
now when i want to modify dat record
when i put matnr no. at screen 103
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Hi Darshan,
Here is a detailed description of how to update data in table controll.
Updating data in table control
The ABAP language provides two mechanisms for loading the table control with data from the internal table and then storing the altered rows of the table control back to the internal table.
Method 1: Read the internal table into the Table Control in the screenu2019s flow logic. Used when the names of the Table Control fields are based on fields of the internal table.
Method 2: Read the internal table into the Table Control in the module pool code. Used when the names of the Table Control fields are based on fields of the database table.
Method 1 (table control fields = itab fields)
In the flow logic we can read an internal table using the LOOP statement. Define the reference to the relevant able control by specifying WITH CONTROL <ctrl>
Determine which table entry is to be read by specifying CURSOR <ctrl>-CURRENT_LINE.
After the read operation the field contents are placed in the header line of the internal table. If the fields in the table control have the same name as the internal they will be filled automatically. Otherwise we need to write a module to transfer the internal table fields to the screen fields.
We must reflect any changes the user makes to the fields of the table control in the internal table otherwise they will not appear when the screen is redisplayed after PBO processing, (eg, after the user presses Enter or scrolls) However, this processing should be performed only if changes have actually been made to the screen fields of the table control (hence the use of the ON REQUEST)
PROCESS BEFORE OUTPUT.
LOOP AT ITAB_REG WITH CONTROL TCREG
CURSOR TCREG-CURRENT_LINE.
ENDLOOP.
PROCESS AFTER INPUT.
LOOP AT ITAB_REG.
MODULE MODIFY_ITAB_REG.
ENDLOOP.
MODULE MODIFY_ITAB_REG INPUT.
MODIFY ITAB_REG INDEX TCREG-CURRENT_LINE.
ENDMODULE.
Method 2 (table control fields = dict. fields)
If using a LOOP statement without an internal table in the flow logic, we must read the data in a PBO module which is called each time the loop is processed.
Since, in this case, the system cannot determine the number of internal table entries itself, we must use the EXIT FROM STEP-LOOP statement to ensure that no blank lines are displayed in the table control if there are no more corresponding entries in the internal table.
PROCESS BEFORE OUTPUT.
LOOP WITH CONTROL TCREG.
MODULE READ_ITAB_REG.
ENDLOOP.
PROCESS AFTER INPUT.
LOOP WITH CONTROL TCREG.
CHAIN.
FIELD: ITAB_REG-REG,
ITAB_REG-DESC.
MODULE MODIFY_ITAB_REG
ON CHAIN-REQUEST.
ENDCHAIN.
ENDLOOP.
MODULE READ_ITAB_REG OUTPUT.
READ TABLE ITAB_REG INDEX TCREG-CURRENT_LINE.
IF SY-SUBRC EQ 0.
MOVE-CORRESPONDING ITAB_REREG TO TCREG.
ELSE.
EXIT FROM STEP-LOOP.
ENDIF.
ENDMODULE.
MODULE MODIFY_ITAB_REG INPUT.
MOVE-CORRESPONDING TCREG TO ITAB_REG.
MODIFY ITAB_REG INDEX
TCREG-CURRENT_LINE.
ENDMODULE.
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Method 1
PROCESS AFTER INPUT.
LOOP AT ITAB_REG.
CHAIN.
FIELD: ITAB_REG-REG,
ITAB_REG-DESC.
MODULE MODIFY_ITAB_REG ON CHAIN-REQUEST.
ENDCHAIN.
ENDLOOP.
MODULE MODIFY_ITAB_REG INPUT.
ITAB_REG-MARK = u2018Xu2019.
MODIFY ITAB_REG INDEX TCREG-CURRENT_LINE.
ENDMODULE.
Method 2
PROCESS AFTER INPUT.
LOOP WITH CONTROL TCREG.
CHAIN.
FIELD: TCREG-REG,
TCREG-DESC.
MODULE MODIFY_ITAB_REG ON CHAIN-REQUEST.
ENDCHAIN.
ENDLOOP.
MODULE MODIFY_ITAB_REG INPUT.
MOVE-CORRESPONDING TCREG TO ITAB_REG.
ITAB_REG-MARK = u2018Xu2019.
MODIFY ITAB_REG INDEX TCREG-CURRENT_LINE.
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Updating the database
MODULE USER_COMMAND_100.
CASE OK_CODE.
WHEN u2018SAVEu2019.
LOOP AT ITAB-REG.
CHECK ITAB_REG-MARK = u2018Xu2019.
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UPDATE TCREG.
ENDLOOP.
WHEN u2026
u2026
ENDCASE.
ENDMODULE.
Hope this will solve your problem.
Regards,
Pavan.
Edited by: PAVAN CHANDRASEKHAR GANTI on Aug 3, 2009 12:48 PM

Sample code on how to populate data in DropDownListbox

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