| True DataControl 8.0 Reference > FilterExpression Object > FilterExpression Object Properties > FilterExpression Property (FilterExpression) |
FilterExpression Property (FilterExpression)
Specifies the expression that has to evaluate to True for a record to be included in the recordset.
FilterExpression.FilterExpression= variant
Read/Write at run time and design time. Property applies to FilterExpression object.
This property specifies the filter expression that is evaluated to test a filter.
If it evaluates to True and other filter conditions are also satisfied, the record is included in the Recordset.
If it evaluates to False, the record is excluded from the Recordset.
See Filters for more information.
See True DataControl Expressions for more information about expressions in general. Evaluation rules for FilterExpression are as follows:
Expression Level: Record level
Synchronous Evaluation: Evaluated after a record has been fetched from the database and all calculated expressions have been evaluated.
Asynchronous Evaluation: Action depends on the variable whose change triggers the asynchronous evaluation. It forces refresh of the TData control unless the changed variable is a field (not a parameter) belonging to this control. Changes to parameters or ancestor fields force refresh.
See Also