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Reference for unit 'db' (#fcl)

TField.Clear

Clear the field contents.

Declaration

Source position: db.pas line 380

public procedure TField.Clear; virtual;

Clear clears the contents of the field. After calling this method the value of the field is Null and IsNull returns True.

The dataset must be in edit mode to execute this method.

If the dataset is not in one of the edit modes, then executing this method will raise an EDatabaseError exception.

TField.IsNull		Is the field empty
TField.Value		Value of the field as a variant value