File path error in same screen.

Question

hey guys,
I want to check my file path validation and display error in same screen itself.
I used my GUI_UPLOAD method in START OF SELECTION. to read the file.
If error it displays error in some other plain screen.
I know AT selection screen will allow me to display in same screen.
But is the way of using GUI_UPLOAD method in AT selection screen is advisable?
or else please give me alternate way.
ambichan

Answer 1

Hi
You can use in AT Selection screen
data result.
CALL METHOD CL_GUI_FRONTEND_SERVICES=>FILE_EXIST
  EXPORTING
    FILE                 =  'C:\test.txt'
  RECEIVING
    RESULT               =
EXCEPTIONS
   CNTL_ERROR           = 1
   ERROR_NO_GUI         = 2
   WRONG_PARAMETER      = 3
   NOT_SUPPORTED_BY_GUI = 4
   others               = 5
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
           WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
the return parameter will be "X" if file exists else it will be blank.
Cheers