- Looper, List Box, Combo Box and Table control
- Chart control
- Using the ..Empty property on a report
- Empty property used in the arrays and associative arrays
- Limits
Empty (Property) In French: Vide
// This control becomes visible
// if the value of the item linked to the "EDT_Phone" control
// is not specified for the current record
IF EDT_Phone..Empty = False THEN
EDT_Phone..Visible = False
END
// If the "TABLE_CustomerTable" control is empty,
// add a new row into this control
IF TABLE_CustomerTable..Empty = True THEN
TableAddLine(TABLE_CustomerTable, "Davis", "Peter")
END
Syntax
<Result> = <Element Name>..Empty
<Result>: Boolean - True if the specified element is empty,
- False otherwise.
<Element Name>: Character string (with or without quotes) Name of element to use. Remarks Looper, List Box, Combo Box and Table control ..Empty is used to find out whether the control is empty (..Empty returns True) or not. This property applies to the Table, TreeView Table, List Box, ListView, Combo Box and Looper controls (see Limits). Empty property used in the arrays and associative arrays ..Empty is used to find out: - Whether an array or an associative array is empty (..Empty returns True).
Example:
// Associative array of file sizes
aaFileSize is associative array of int
...
IF aaFileSize..Empty = False THEN
Info("The array contains at least one element")
END
- Whether an element of an associative array exists or not. For an associative array without duplicate, ..Empty is set to False if the element exists. For an associative array with duplicates, ..Empty is set to False if at least one element exists.
Example:
// Associative array of integers
// indexed on strings and with duplicates
aaIDPerCustomer is associative array of int
// Add the identifier of customer "A"
aaIDPerCustomer["A"] = 55
// Add the identifier of customer "B"
aaIDPerCustomer["B"] = 321
IF aaIDPerCustomer["A"]..Empty = False THEN
Info("At least one element A exists")
END
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