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RecordRef.IsEmpty() Method

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Version: Available or changed with runtime version 1.0.

Determines whether any records exist in a filtered set of records in a table.

Syntax

Empty :=   RecordRef.IsEmpty()

Note

This method can be invoked using property access syntax.

Parameters

RecordRef
 Type: RecordRef
An instance of the RecordRef data type.

Return Value

Empty
 Type: Boolean
true if the record or table is empty; otherwise, false.

Remarks

If you have not applied filters to the record, this method determines whether the table is empty. If you have applied filters, the method determines whether the filtered set of records is empty.

The number of filters that you have applied to the records affects the speed of the IsEmpty method. The fewer the number of filters, the faster the operation is performed.

When you are using SQL Server, this method is faster than using the Count Method (Record) and then testing the result for zero.

This method works the same as the IsEmpty Method (Record).

Example

The following example opens table 18, the customer table as a RecordRef variable that is named. CustomerRecref. The IsEmpty Method (RecordRef) determines whether the table is empty. The message box displays false because the Customer table is not empty. false represents false.

var
    CustomerRecref: RecordRef;
    Text000: Label 'Is the table empty? %1.';
begin 
    CustomerRecref.Open(18);  
    IsEmpty := CustomerRecref.IsEmpty;  
    Message(Text000, IsEmpty);  
end;

If you open table 78 (Printer Selection), the message will display true because the table is empty.

RecordRef Data Type
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