How to do choose one record in alv screen from dyn_table ?

Question

Experts:  How to do choose one record in alv screen from <dyn_table> ?
FORM USER_COMMAND USING R_UCOMM LIKE SY-UCOMM
RS_SELFIELD TYPE SLIS_SELFIELD.
DATA: V_COUNT TYPE I.
CLEAR: V_COUNT,<dyn_wa>.
LOOP AT <dyn_table> INTO <dyn_wa>. "WHERE <?????> = 'X'.  I should how to do write ?
        V_COUNT = V_COUNT + 1.
ENDLOOP.
  if not rs_selfield-tabindex eq 0 AND V_COUNT NE 0.
    IF R_UCOMM = '&CHANGE'.
      IF sy-subrc = 0.
        IF V_COUNT = 1.
          CALL SCREEN 100.
          perform dny_field_value_update.
          rs_selfield-refresh = 'X'.
        ENDIF.
      ENDIF.
    endif.
  endif.
ENDFORM. "USER_COMMAND

Answer 1

Anyways which version of SAP are you using ? As of SAPNW 7.0 Release 2 you can specify dynamic tokens with LOOP ... WHERE statement.
My sap product is ecc5.0. Still thanks!
Now I have solved it.
FORM USER_COMMAND  USING R_UCOMM LIKE SY-UCOMM
                         RS_SELFIELD TYPE SLIS_SELFIELD.
  DATA: V_COUNT TYPE I.
  CLEAR:  V_COUNT,<dyn_wa>,IT_TOTAL.
  SY-INDEX = rs_selfield-tabindex.   
READ TABLE <dyn_table> INTO <dyn_wa> INDEX SY-INDEX.
ASSIGN COMPONENT 'KUNNR' OF STRUCTURE <DYN_WA> TO <dyn_field>.
  CONDENSE <DYN_FIELD> NO-GAPS.
  IT_TOTAL-KUNNR = <DYN_FIELD>.
  ASSIGN COMPONENT 'PLANTNO' OF STRUCTURE <DYN_WA> TO <dyn_field>.
  CONDENSE <DYN_FIELD> NO-GAPS.
  IT_TOTAL-MATNR = <DYN_FIELD>.
  ASSIGN COMPONENT 'CUSTOMERNO' OF STRUCTURE <DYN_WA> TO <dyn_field>.
   CONDENSE <DYN_FIELD> NO-GAPS.
  IT_TOTAL-CUSTOMERNO = <DYN_FIELD>.
  ASSIGN COMPONENT 'ZPERSON' OF STRUCTURE <DYN_WA> TO <dyn_field>.
  CONDENSE <DYN_FIELD> NO-GAPS.
  IT_TOTAL-ZPERSON = <DYN_FIELD>.
  IF SY-SUBRC = 0.
    "CHECK  <dyn_field> = 'X'.
    V_COUNT = V_COUNT + 1.
  ENDIF.
  if not rs_selfield-tabindex eq 0 AND V_COUNT NE 0.
    IF R_UCOMM = '&CHANGE'.
      IF sy-subrc = 0.
        IF V_COUNT = 1.
          CALL SCREEN 100.
          perform dny_field_value_update.
          rs_selfield-refresh = 'X'.
          "exit.
        ENDIF.
      ENDIF.
    endif.
  endif.
Edited by: andy1982999 on Apr 2, 2010 8:42 AM