[[AgustinOrtu]]

Muy interesante, acabo de probarlo y se llega a un callejon sin salida:

Código Delphi [-]
  ds.Open;
  ds.FieldByName('algo').Size := 10; // --> can't do that on an opened dataset

  ds.Close;
  ds.FieldByName('algo') // --> can't do that on a closed dataset