Drop down box in alv

Question

hi to all , my querry is as follows how to give dropdown box for one paricular column in alv grid . pls give sample code . i have searched for it in forum . but i could not get correct answer . pls give coding . points will be rwewarded.
2, pls tell how to make one particular cell of one column editable . we know that we can make one column editable by using  is _layout- edit = 'x'.pls give coding . one sample program

Answer 1

Hi.
for editable ALV,
refer the following link , it is havine one complete editable ALV program
http://www.sapdevelopment.co.uk/reporting/alv/alvgrid_editable.htm
for drill down  run the following code.
REPORT yfi7g_ing_mic_001 .
*PROGRAM YFI7G_ING_MIC_001.
TABLES: vbak .
TABLES: mara .
TYPES: BEGIN OF tp_vbak ,
      vbeln TYPE vbak-vbeln,
      erdat TYPE vbak-erdat,
      erzet TYPE vbak-erzet,
      ernam TYPE vbak-ernam,
      vbtyp TYPE vbak-vbtyp,
      trvog TYPE vbak-trvog,
      auart TYPE vbak-auart,
      lifsk TYPE vbak-lifsk,
      faksk TYPE vbak-faksk,
      waerk TYPE vbak-waerk,
      vkorg TYPE vbak-vkorg,
      kunnr TYPE vbak-kunnr,
      vgbel TYPE vbak-vgbel,
      vgtyp TYPE vbak-vgtyp,
END OF tp_vbak .
TYPES: BEGIN OF tp_mara ,
        matnr TYPE mara-matnr,
END OF tp_mara .
TYPES: BEGIN OF tp_alv1_data.
INCLUDE TYPE tp_vbak .
TYPES: END OF tp_alv1_data.
TYPES: BEGIN OF tp_alv2_data.
INCLUDE TYPE tp_mara .
TYPES: END OF tp_alv2_data.
TYPE-POOLS: slis.
DATA: gt_vbak TYPE STANDARD TABLE OF tp_vbak WITH HEADER LINE.
DATA: gt_mara TYPE STANDARD TABLE OF tp_mara WITH HEADER LINE.
DATA: gs_variant LIKE disvariant.
DATA: gt_alv1_data TYPE STANDARD TABLE OF tp_alv1_data WITH HEADER LINE.
DATA: gt_alv2_data TYPE STANDARD TABLE OF tp_alv2_data WITH HEADER LINE.
SELECTION-SCREEN                                                     *
BLOCK b0                                                             *
SELECTION-SCREEN BEGIN OF BLOCK b0 WITH FRAME.
SELECT-OPTIONS: s_vbeln FOR vbak-vbeln.        "<field not defined?>
PARAMETERS: p_matnr LIKE mara-matnr.           "<field not defined?>
SELECTION-SCREEN END OF BLOCK b0.
BLOCK bvar                                                           *
SELECTION-SCREEN BEGIN OF BLOCK bvar WITH FRAME.
PARAMETERS: p_vari  LIKE disvariant-variant.
SELECTION-SCREEN END OF BLOCK bvar.
BLOCK bbox                                                           *
SELECTION-SCREEN BEGIN OF BLOCK bbox WITH FRAME.
PARAMETERS: p_box_up  RADIOBUTTON GROUP b1,
            p_box_do  RADIOBUTTON GROUP b1 DEFAULT 'X',
            p_box_no  RADIOBUTTON GROUP b1.
SELECTION-SCREEN END OF BLOCK bbox.
      AT SELECTION-SCREEN ON P_VARI                                 *
AT SELECTION-SCREEN ON p_vari.
  PERFORM alv_variant_existence USING    p_vari
                                CHANGING gs_variant.
      AT SELECTION-SCREEN ON VALUE REQUEST FOR P_VARI               *
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_vari.
  PERFORM alv_variant_f4 CHANGING p_vari
                                  gs_variant.
INITIALIZATION                                                       *
INITIALIZATION.
START-OF-SELECTION                                                   *
START-OF-SELECTION.
  PERFORM authority_check.
  PERFORM get_control_data.
  PERFORM get_transaction_data.
  PERFORM process_transaction_data.
END-OF-SELECTION                                                     *
END-OF-SELECTION.
  PERFORM output_data.
F   O   R   M   S                                                   *
      FORM AUTHORITY_CHECK                                          *
      Perform authority checks for the report                       *
FORM authority_check.
!!! Note: authorisation checks are application-dependent.
!!! Some common cases are listed below - please select one of them
!!! or add new authorisation checks.
!!! If the report is creating batch input session or using LDB
!!! it may be sufficient to use automatic SAP auth.checks.
Authorisation for displaying documents in a single company code
authority-check object 'F_BKPF_BUK'
       id 'BUKRS' field p_bukrs
       id 'ACTVT' field '03'.
if sy-subrc <> 0.
  message e001(z9) with 'No authorisation to display documents'
                        'in company code' p_bukrs.
endif.
Displaying documents from a list of company codes (select-options)
call function 'Y_BUKRS_AUTHORITY_CHECK'
   EXPORTING
        ACTVT     = '03'
        NOMESSAGE = ' '
   tables
        s_bukrs   = s_bukrs.
ENDFORM.                              " AUTHORITY_CHECK
      FORM GET_CONTROL_DATA                                         *
      Read configuration etc.                                       *
FORM get_control_data.
ENDFORM.                               " GET_CONTROL_DATA
      FORM GET_TRANSACTION_DATA                                     *
      Read documents etc.                                           *
FORM get_transaction_data.
!!! Data selection statement below has been generated automatically.
!!! Please check if it is correct and complete.
!!! Use table joins or 'SELECT FOR ALL ENTRIES' when selecting data
!!! from related tables.
  SELECT
            vbeln
            erdat
            erzet
            ernam
   FROM vbak
      INTO CORRESPONDING FIELDS OF TABLE gt_vbak
  CHECK NOT gt_vbak[] IS INITIAL.
  SELECT
            matnr
   FROM mara
      INTO CORRESPONDING FIELDS OF TABLE gt_mara
      FOR ALL ENTRIES IN gt_vbak
      WHERE ernam = gt_vbak-ernam
ENDFORM.                               " GET_TRANSACTION_DATA
      FORM PROCESS_TRANSACTION_DATA                                 *
FORM process_transaction_data.
  LOOP AT gt_vbak .
    MOVE-CORRESPONDING gt_vbak TO gt_alv1_data .
    APPEND gt_alv1_data .
  ENDLOOP.
  FREE gt_vbak .
  LOOP AT gt_mara .
    MOVE-CORRESPONDING gt_mara TO gt_alv2_data .
    APPEND gt_alv2_data .
  ENDLOOP.
  FREE gt_mara .
ENDFORM.                               " PROCESS_TRANSACTION_DATA
      FORM OUTPUT_DATA                                              *
FORM output_data.
  PERFORM alv_list_display.
ENDFORM.                               " OUTPUT_DATA
      FORM DISPLAY_RECORD                                           *
      Display object associated with the current ALV line           *
FORM display_record USING is_selfield TYPE slis_selfield.
  READ TABLE gt_alv1_data INDEX is_selfield-tabindex.
  CHECK sy-subrc = 0.
!!! SAMPLE IMPLEMENTATION FOR DISPLAYING FI DOCUMENTS:
  SET PARAMETER ID 'BUK' FIELD gt_alv1_data-vbeln.
set parameter id 'BLN' field gt_alv1_data-belnr.
set parameter id 'GJR' field gt_alv1_data-gjahr.
  CALL TRANSACTION 'FB03' AND SKIP FIRST SCREEN.
ENDFORM.                               " DISPLAY_RECORD
      FORM ALV_LIST_DISPLAY                                         *
      Invoke main ALV function to format and show the report        *
FORM alv_list_display.
  DATA: ls_layout      TYPE slis_layout_alv,
        ls_print       TYPE slis_print_alv,
        ls_keyinfo     TYPE slis_keyinfo_alv,
        lt_fieldcat    TYPE slis_t_fieldcat_alv,
        lt_exctab      TYPE slis_t_extab,
        lt_sorttab     TYPE slis_t_sortinfo_alv,
        lt_events      TYPE slis_t_event.
  PERFORM alv_init_report_events TABLES   lt_events.
  PERFORM alv_init_report_layout TABLES   lt_fieldcat
                                          lt_exctab
                                          lt_sorttab
                                 CHANGING ls_layout
                                          ls_print
                                          ls_keyinfo.
  CALL FUNCTION 'REUSE_ALV_HIERSEQ_LIST_DISPLAY'
    EXPORTING
      i_interface_check        = ' '
      i_callback_program       = sy-cprog
      is_layout                = ls_layout
      it_fieldcat              = lt_fieldcat
      it_excluding             = lt_exctab
    IT_SPECIAL_GROUPS        =
      it_sort                  = lt_sorttab
    IT_FILTER                =
    IS_SEL_HIDE              =
    I_SCREEN_START_COLUMN    = 0
    I_SCREEN_START_LINE      = 0
    I_SCREEN_END_COLUMN      = 0
    I_SCREEN_END_LINE        = 0
    I_DEFAULT                = 'X'
      i_save                   = 'A'
      is_variant               = gs_variant
      it_events                = lt_events
    IT_EVENT_EXIT            =
      i_tabname_header         = 'GT_ALV1_DATA'
      i_tabname_item           = 'GT_ALV2_DATA'
    I_STRUCTURE_NAME_HEADER  =
    I_STRUCTURE_NAME_ITEM    =
      is_keyinfo               =  ls_keyinfo
      is_print                 =  ls_print
    IS_REPREP_ID             =
  IMPORTING
    E_EXIT_CAUSED_BY_CALLER  =
    ES_EXIT_CAUSED_BY_USER   =
    TABLES
      t_outtab_header          = gt_alv1_data
      t_outtab_item            = gt_alv2_data.
  EXCEPTIONS
    PROGRAM_ERROR            = 1
    OTHERS                   = 2
ENDFORM.                           " ALV_LIST_DISPLAY
      FORM ALV_INIT_REPORT_LAYOUT                                   *
      Set up report layout definition for ALV_LIST_DISPLAY          *
<-- OT_FIELDCAT list of fields                                     *
<-- OT_EXCTAB   excluded menu options                              *
<-- OT_SORTTAB  sorting/grouping definition                        *
<-- OS_LAYOUT   global report layout settings                      *
<-- OS_PRINT    global report printout settings                    *
<-- OS_KEYINFO  itab key fields (required only for hier.lists)     *
FORM alv_init_report_layout TABLES ot_fieldcat TYPE slis_t_fieldcat_alv
                                   ot_exctab   TYPE slis_t_extab
                                   ot_sorttab  TYPE slis_t_sortinfo_alv
                          CHANGING cs_layout   TYPE slis_layout_alv
                                   cs_print    TYPE slis_print_alv
                                   cs_keyinfo  TYPE slis_keyinfo_alv.
add menu items to be excluded to ot_exctab.
  REFRESH ot_exctab.
  REFRESH ot_fieldcat.
  REFRESH ot_sorttab.
!!! List all ALV data fields for display here:
DD-struct  = data dictionary structure name
DD-field   = field of data dictionary structure
itab       = internal table for output data
itab-field = internal table field name
key        = set to 'X' if key field
sum        = set to 'X' for totals
hid        = set to 'X' if field is initially hidden
row        = list row number (multi-line list if >1)
DD-struct    DD-field     itab         itab-field  key sum hid row
  PERFORM alv_build_fieldcat TABLES ot_fieldcat USING:
'VBAK'       'VBELN'      'GT_ALV1_DATA' 'VBELN'     ' ' ' ' ' ' 1 ,
'VBAK'       'ERDAT'      'GT_ALV1_DATA' 'ERDAT'     ' ' ' ' ' ' 1 ,
'VBAK'       'ERZET'      'GT_ALV1_DATA' 'ERZET'     ' ' ' ' ' ' 1 ,
'VBAK'       'ERNAM'      'GT_ALV1_DATA' 'ERNAM'     ' ' ' ' ' ' 1.
  PERFORM alv_build_fieldcat TABLES ot_fieldcat USING:
'MARA'       'MATNR'      'GT_ALV2_DATA' 'MATNR'     ' ' ' ' ' ' 1 .
!!! List all ALV data fields for sorting/grouping here
itab       = internal table for output data
itab-field = internal table field name
up         = sort ascending
down       = sort descending
grp        = group by
comp       = group initially compressed
pos        = field position in sort sequence
itab                   field              up down grp comp        pos
  PERFORM alv_build_sorttab TABLES ot_sorttab USING:
'GT_ALV1_DATA'         'VBELN'             'X' ' ' ' ' ' '           1.
  PERFORM alv_build_sorttab TABLES ot_sorttab USING:
'GT_ALV2_DATA'         'MATNR'             'X' ' ' ' ' ' '           1.
!!! key definition - required only for hierarchical display (2 itabs)
  cs_keyinfo-header01 = 'VBELN' .
  cs_keyinfo-item01   = 'MATNR' .
!!! See the declaration of type SLIS_LAYOUT_ALV and set the fields
!!! of OS_LAYOUT record to change list-level attributes
os_layout-no_colhead     = 'X'.         " no headings
  cs_layout-zebra          = 'X'.         " stripped pattern
os_layout-no_vline       = 'X'.         " columns separated by space
os_layout-totals_only    = 'X'.         " show only totals
os_layout-totals_text    = 'Total'.     " totals line label
os_layout-subtotals_text = 'Subtotal'.  " subtotals line label
os_layout-subtotals_text = 'Subtotal'.  " subtotals line label
os_layout-key_hotspot    = 'X'.         " keys as hotspot
os_layout-expand_all     = 'X'.         " Expand all positions
os_layout...
  cs_print-no_print_selinfos = 'X'.       " Skip selection statistics
  cs_print-no_print_listinfos = 'X'.      " Skip list statistics
os_print-...
ENDFORM.                               " INIT_REPORT_LAYOUT
      FORM ALV_BUILD_FIELDCAT                                       *
      Format a single line for ALV_INIT_REPORT_LAYOUT               *
FORM alv_build_fieldcat TABLES ot_fieldcat
                        USING  iv_ref_tabname   "ref to a table/field
                               iv_ref_fieldname
                               iv_tabname     "actual table/field name
                               iv_fieldname
                               iv_key
                               iv_do_sum
                               iv_no_out
                               iv_row_pos.
status variables for auto-numbering of field column position
(column number reset when a new table or row begins)
  STATICS: sv_last_tabname TYPE slis_tabname,
           sv_last_row_pos TYPE i,
           sv_current_col  TYPE i.
  IF sv_last_tabname <> iv_tabname OR sv_last_row_pos <> iv_row_pos.
    sv_current_col = 1.
  ELSE.
    ADD 1 TO sv_current_col.
  ENDIF.
  sv_last_tabname = iv_tabname.
  sv_last_row_pos = iv_row_pos.
  DATA: ls_fieldcat    TYPE slis_fieldcat_alv.
  DATA: lv_fieldname   TYPE slis_fieldname.
  lv_fieldname = iv_fieldname.
!!! List all the special formatting requirements in cases below
case lv_fieldname.
  when 'WRBTR'.                      "<-- link with currency required
    ls_fieldcat-cfieldname = 'WAERS'.
    ls_fieldcat-ctabname   = iv_tabname.
  when 'HKONT'.                     "<-- change default column header
    ls_fieldcat-seltext_s  = 'GL Acc.'.
    ls_fieldcat-ddictxt    = 'S'.          " (S)hort (M)iddle (L)ong
  when 'SOME_NUMBER'                 "<-- change number formatting
    ls_fieldcat-nosign     = 'X'.
    ls_fieldcat-nozero     = 'X'.
    ls_fieldcat-just       = 'L'.         " (L)eft (R)ight (C)enter
endcase.
  ls_fieldcat-ref_tabname   = iv_ref_tabname.
  ls_fieldcat-ref_fieldname = iv_ref_fieldname.
  ls_fieldcat-tabname       = iv_tabname.
  ls_fieldcat-fieldname     = iv_fieldname.
  ls_fieldcat-key           = iv_key.
  ls_fieldcat-do_sum        = iv_do_sum.
  ls_fieldcat-no_out        = iv_no_out.
  ls_fieldcat-row_pos       = iv_row_pos.
  ls_fieldcat-col_pos       = sv_current_col.
  APPEND ls_fieldcat TO ot_fieldcat.
ENDFORM.                          " ALV_BUILD_FIELDCAT
      FORM ALV_BUILD_SORTTAB                                        *
      Set up sorting information for ALV_INIT_REPORT_LAYOUT         *
FORM alv_build_sorttab TABLES ot_sorttab TYPE slis_t_sortinfo_alv
                       USING  iv_tabname   TYPE slis_fieldname
                              iv_fieldname TYPE slis_fieldname
                              iv_up        TYPE c
                              iv_down      TYPE c
                              iv_subtot    TYPE c
                              iv_comp      TYPE c
                              iv_spos      TYPE n.
  ot_sorttab-spos      = iv_spos.
  ot_sorttab-fieldname = iv_fieldname.
  ot_sorttab-tabname   = iv_tabname.
  ot_sorttab-up        = iv_up.
  ot_sorttab-down      = iv_down.
  ot_sorttab-subtot    = iv_subtot.
  ot_sorttab-comp      = iv_comp.
  APPEND ot_sorttab.
ENDFORM.                            " ALV_BUILD_SORTTAB
      FORM ALV_INIT_REPORT_EVENTS                                   *
      Set up program events for ALV_LIST_DISPLAY                    *
<-- OT_EVENTS   list of events and associated report subroutines   *
FORM alv_init_report_events TABLES ot_events TYPE slis_t_event.
  CLEAR   ot_events.
  REFRESH ot_events.
  ot_events-name = slis_ev_user_command.
  ot_events-form = 'USER_COMMAND'.
  APPEND ot_events.
  ot_events-name = slis_ev_pf_status_set.
  ot_events-form = ''.                         "'PF_STATUS_SET'.
  APPEND ot_events.
  ot_events-name = slis_ev_top_of_list.
  ot_events-form = 'TOP_OF_LIST'.
  APPEND ot_events.
  ot_events-name = slis_ev_end_of_list.
  ot_events-form = 'END_OF_LIST'.
  APPEND ot_events.
  ot_events-name = slis_ev_top_of_page.
  ot_events-form = 'TOP_OF_PAGE'.
  APPEND ot_events.
  ot_events-name = slis_ev_end_of_page.
  ot_events-form = 'END_OF_PAGE'.
  APPEND ot_events.
  ot_events-name = slis_ev_foreign_top_of_page.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_foreign_end_of_page.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_top_of_coverpage.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_end_of_coverpage.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_before_line_output.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_after_line_output.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_caller_exit_at_start.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_list_modify.
  ot_events-form = ''.
  APPEND ot_events.
  ot_events-name = slis_ev_subtotal_text.
  ot_events-form = ''.
  APPEND ot_events.
ENDFORM.                            " ALV_INIT_REPORT_EVENTS
      FORM USER_COMMAND                                             *
      Subroutine attached as callback form to ABAP List Viewer      *
  --> UCOMM    - user command code passed from ALV                  *
  --> SELFIELD - information record describing current line/field   *
FORM user_command USING value(iv_ucomm) LIKE sy-ucomm
                        is_selfield     TYPE slis_selfield.
  CASE iv_ucomm.
    WHEN '&IC1'.                                  "ALV record selection
      PERFORM display_record USING is_selfield.
  when ...
  ENDCASE.
ENDFORM.                               " USER_COMMAND
      FORM PF_STATUS_SET                                            *
      Subroutine attached as callback form to ABAP List Viewer,     *
      allows setting alternative menu.  If necessary:               *
      1. Copy 'STANDARD' menu from SAPLKKBL and modify as required, *
      2. Activate callback                                          *
FORM pf_status_set USING it_exctab TYPE slis_t_extab.
set pf-status 'STANDARD' excluding it_exctab.
ENDFORM.                               " PF_STATUS_SET
      FORM TOP_OF_LIST                                              *
      Subroutine attached as callback form to ABAP List Viewer,     *
      executed once at the start of list output.                    *
FORM top_of_list.
  DATA: lt_seltab TYPE STANDARD TABLE OF rsparams WITH HEADER LINE.
  DATA: lv_report LIKE sy-repid.
  lv_report = sy-repid.             "do not pass sy-repid to function!
  IF p_box_up = 'X'. "display select options at report start
    CALL FUNCTION 'RS_REFRESH_FROM_SELECTOPTIONS'
      EXPORTING
        curr_report     = lv_report
      TABLES
        selection_table = lt_seltab.
remove 'technical' parameters with 'DELETE LT_SELTAB WHERE...'
before display, if necessary
    CALL FUNCTION 'RS_LIST_SELECTION_TABLE'
       EXPORTING
            report        = lv_report
            seltext       = 'X'
        dyn_range     =
            newpage       = ' '
        screennr      = 1000
       TABLES
            sel_tab       = lt_seltab
       EXCEPTIONS
            sel_tab_empty = 1.
  ENDIF. "p_box_up = 'X'
ENDFORM.                               " TOP_OF_LIST
      FORM END_OF_LIST                                              *
      Subroutine attached as callback form to ABAP List Viewer      *
      executed once at the end of list output.                      *
FORM end_of_list.
  DATA: lt_seltab TYPE STANDARD TABLE OF rsparams WITH HEADER LINE.
  DATA: lv_report LIKE sy-repid.
  lv_report = sy-repid.             "do not pass sy-repid to function!
  IF p_box_do = 'X'. "display select options at report end
    CALL FUNCTION 'RS_REFRESH_FROM_SELECTOPTIONS'
      EXPORTING
        curr_report     = lv_report
      TABLES
        selection_table = lt_seltab.
remove 'technical' parameters with 'DELETE LT_SELTAB WHERE...'
before display, if necessary
    CALL FUNCTION 'RS_LIST_SELECTION_TABLE'
       EXPORTING
            report        = lv_report
            seltext       = 'X'
        dyn_range     =
            newpage       = ' '
        screennr      = 1000
       TABLES
            sel_tab       = lt_seltab
       EXCEPTIONS
            sel_tab_empty = 1.
  ENDIF. "p_box_do = 'X'
ENDFORM.                               " END_OF_LIST
      FORM TOP_OF_PAGE                                              *
      Subroutine attached as callback form to ABAP List Viewer      *
FORM top_of_page.
standard Ingram Micro report page heading
  DATA: lv_coco_pos TYPE i,          "CurPos of 'Company confidential'
        lv_title_pos TYPE i,           "CurPos of report title
        lv_title(70) TYPE c,           "Truncated report title
        lv_page_pos TYPE i,            "CurPos of page number
        lv_date_pos TYPE i,            "CurPos of date and time
        lv_page_no(10) TYPE c,
        lv_date(25) TYPE c,
        lv_time(20) TYPE c,
        lv_page(10) TYPE c.
We may need to truncate title if the line size is < 81.
  IF sy-linsz < 81.
    lv_title = sy-title+0(50).
  ELSE.
    lv_title = sy-title.
  ENDIF.
Decide on positioning of text depending on width of page
  lv_title_pos = ( sy-linsz / 2 ) - ( STRLEN( lv_title ) / 2 ).
  lv_coco_pos = sy-linsz - 20.
  FORMAT COLOR COL_HEADING INTENSIFIED ON.
  WRITE: / 'Ingram Micro',
           AT lv_title_pos lv_title,
           AT lv_coco_pos 'Company Confidential'.
Setup data correctly in the correct format for the display fields.
  lv_page = sy-pagno.
  SHIFT lv_page LEFT DELETING LEADING ' '.
  CONCATENATE sy-datum6(2) sy-datum4(2) sy-datum+0(4)
               INTO lv_date SEPARATED BY '.'.
  CONCATENATE sy-uzeit0(2) ':' sy-uzeit2(2) INTO lv_time.
  CONCATENATE lv_date lv_time INTO lv_date SEPARATED BY ' '.
  CONCATENATE 'Page' lv_page INTO lv_page_no SEPARATED BY ' '.
Decide on positioning of text depending on width of page.
  lv_page_pos = sy-linsz - ( STRLEN( lv_page_no ) ).
  WRITE: / lv_date,
           AT lv_page_pos lv_page_no.
  ULINE.
ENDFORM.                               " TOP_OF_PAGE
      FORM END_OF_PAGE                                              *
      Subroutine attached as callback form to ABAP List Viewer      *
FORM end_of_page.
ENDFORM.                               " END_OF_PAGE
      Form  ALV_VARIANT_EXISTENCE
      Reads ALV variant definition
FORM alv_variant_existence  USING    iv_variant LIKE disvariant-variant
                            CHANGING os_variant LIKE disvariant.
  CHECK NOT iv_variant IS INITIAL.
  os_variant-report  = sy-repid.
  os_variant-variant = iv_variant.
  IF iv_variant CP '/*'.    "user-specific variants begin with slash
    os_variant-username = sy-uname.
  ENDIF.
  CALL FUNCTION 'REUSE_ALV_VARIANT_EXISTENCE'
    EXPORTING
      i_save        = 'A'
    CHANGING
      cs_variant    = os_variant
    EXCEPTIONS
      wrong_input   = 1
      not_found     = 2
      program_error = 3
      OTHERS        = 4.
  IF sy-subrc <> 0.
    MESSAGE e001(z9) WITH 'Please select a valid display variant.'.
  ENDIF.
ENDFORM.                               " ALV_VARIANT_EXISTENCE
      FORM ALV_VARIANT_F4                                           *
      Display list of layout variants on report selection screen    *
FORM alv_variant_f4  CHANGING cv_varname  LIKE disvariant-variant
                              cs_variant  LIKE disvariant.
  DATA: lv_exit(1) TYPE c.
  cs_variant-report = sy-repid.
  CALL FUNCTION 'REUSE_ALV_VARIANT_F4'
       EXPORTING
            is_variant          = cs_variant
            i_save              = 'A'
          it_default_fieldcat =
       IMPORTING
            e_exit              = lv_exit
            es_variant          = cs_variant
       EXCEPTIONS
            not_found = 2.
  IF sy-subrc = 2.
    MESSAGE ID sy-msgid TYPE 'S'      NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ELSE.
    IF lv_exit = space.
      cv_varname = cs_variant-variant.
    ENDIF.
  ENDIF.
here in output. if you will click on material. you can go to other transaction.
also for drill down you can refer one standard program.
DEMO_DYNPRO_DROPDOWN_LISTBOX
regards
Ruchika
reward if useful.