Exceptions in cl_gui_frontend_services= file_open_dialog

Question

hi when upgrading from 4.5 to 6.o Im getting the following exception
When the pop up box is cancelled during the download option, a success message is displayed in 6.0 whereas an error message is displayed in 4.5.
here is the code
CALL METHOD cl_gui_frontend_services=>file_open_dialog
  EXPORTING
    DEFAULT_EXTENSION        = '*.xls,'
    DEFAULT_FILENAME         = '*.xls,'
    FILE_FILTER              = '.'
  CHANGING
    file_table               = W_FILENAME
    rc                       = w_rc
  EXCEPTIONS
    FILE_OPEN_DIALOG_FAILED = 1
    CNTL_ERROR              = 2
    ERROR_NO_GUI            = 3
    NOT_SUPPORTED_BY_GUI    = 4
    others                  = 5.
IF W_RC IS NOT INITIAL.
   READ TABLE W_FILENAME INTO W_AREA INDEX 1.
IF SY-SUBRC = 0.
   L_FILE = W_AREA-FILENAME.
ENDIF.
ENDIF.
  IF SY-SUBRC EQ 3.
    MESSAGE I999 WITH 'Action Cancelled by user'(044).
    EXIT.
  ENDIF.
plz tell me where is the eror

Answer 1

chk the data declearsation data type.
CALL METHOD cl_gui_frontend_services=>file_open_dialog
    EXPORTING
      window_title            = 'Import from a local file'
      default_extension       = 'DAT'
     DEFAULT_FILENAME        =
      file_filter             = l_file_filter
      initial_directory       = 'C:\'
     MULTISELECTION          =
     WITH_ENCODING           =
    CHANGING
      file_table              = l_file_table
      rc                      = l_rc
     USER_ACTION             =
     FILE_ENCODING           =
    EXCEPTIONS
      file_open_dialog_failed = 1
      cntl_error              = 2
      error_no_gui            = 3
      not_supported_by_gui    = 4
      OTHERS                  = 5
      CALL METHOD CL_GUI_FRONTEND_SERVICES=>GUI_DOWNLOAD
        EXPORTING
          FILENAME                = V_FILE
          FILETYPE                = 'ASC'
          WRITE_FIELD_SEPARATOR   = 'X'
        CHANGING
          DATA_TAB                = IT_MAIN[]
        EXCEPTIONS
          FILE_WRITE_ERROR        = 1
          NO_BATCH                = 2
          GUI_REFUSE_FILETRANSFER = 3
          INVALID_TYPE            = 4
          NO_AUTHORITY            = 5
          UNKNOWN_ERROR           = 6
          HEADER_NOT_ALLOWED      = 7
          SEPARATOR_NOT_ALLOWED   = 8
          FILESIZE_NOT_ALLOWED    = 9
          HEADER_TOO_LONG         = 10
          DP_ERROR_CREATE         = 11
          DP_ERROR_SEND           = 12
          DP_ERROR_WRITE          = 13
          UNKNOWN_DP_ERROR        = 14
          ACCESS_DENIED           = 15
          DP_OUT_OF_MEMORY        = 16
          DISK_FULL               = 17
          DP_TIMEOUT              = 18
          FILE_NOT_FOUND          = 19
          DATAPROVIDER_EXCEPTION  = 20
          CONTROL_FLUSH_ERROR     = 21
          NOT_SUPPORTED_BY_GUI    = 22
          OTHERS                  = 23.
      IF SY-SUBRC <> 0.
     MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      ENDIF.