Event to validate the value of a field before it is written to the data buffer.
Source position: db.pas line 493
published property TField.OnValidate : TFieldNotifyEvent |
OnValidate is called prior to writing a new field value to the dataset's data buffer. It can be used to prevent writing the new value to the buffer by raising an exception in the event handler. Note that this event handler is always called, irrespective of the way the value of the field is set.
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Text representation of the field. |
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Event to format the field's content. |
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Event to set the field's content based on a user-formatted string. |
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Event triggered when the field's value has changed. |