| The Dialog class / ui.Dialog methods | |
Deletes all rows from the specified list.
The deleteAllRows() method removes all the rows of a list driven by a DISPLAY ARRAY or INPUT ARRAY. This is equivalent to a deleteRow() call, but instead of deleting one particular row, it removes all rows of the specified list.
This method must not be called in control blocks such as BEFORE ROW, AFTER ROW, BEFORE INSERT, AFTER INSERT, BEFORE DELETE, AFTER DELETE, it is designed to be used in an ON ACTION block.
After the method is called, all rows are deleted from the program array, and the getArrayLength() method will return zero.
The method takes the name of the screen-array as parameter.
If the deleteAllRows() method is called during an INPUT ARRAY, the dialog will automatically append a new temporary row if the focus is in the list, to let the user enter new data. When using AUTO APPEND = FALSE attribute, no temporary row will be created and the current row register will be automatically changed to make sure that it will not be greater than the total number of rows.
If deleteAllRows() method is called during an INPUT ARRAY or DISPLAY ARRAY that has the focus, the BEFORE ROW control block will be executed if you delete the current row. This is required to reset the internal state of the dialog.
If the list was decorated with cell attributes, the program array defining the attributes will be cleared. If multi-row selection is enabled, selection flags are cleared.