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How often should the value of calculated fields be calculated
Source position: db.pas line 1740
public property TDataSet.AutoCalcFields : Boolean 
AutoCalcFields is by default true, meaning that the values of calculated fields will be computed in the following cases:
When AutoCalcFields is False, then the calculated fields are called whenever
Both proper calculated fields and lookup fields are computed. Calculated fields are computed through the TDataset.OnCalcFields event.

The kind of field. 


Event triggered when values for calculated fields must be computed. 