ui.Dialog.getArrayLength
Returns the total number of rows in the specified list.
Syntax
getArrayLength(
   name STRING )
  RETURNS INTEGER- name is the name of the screen record, see Identifying screen-arrays in ui.Dialog methods.
Usage
The getArrayLength() method returns the total number of rows of an
INPUT ARRAY or DISPLAY ARRAY list. The name of the
screen array is passed as parameter to identify the list.
Example
MAIN
  DEFINE custlist DYNAMIC ARRAY OF RECORD
            pkey INT, name VARCHAR(50)
         END RECORD
  OPEN FORM f1 FROM "form1"
  DISPLAY FORM f1
  DISPLAY ARRAY custlist TO sa_custlist.*
     BEFORE DISPLAY
         MESSAGE "Row count: " || DIALOG.getArrayLength("sa_custlist")
  END DISPLAY
END MAIN