FireDAC.Comp.Client.TFDCustomConnection.OnError

• Up to Parent: TFDCustomConnection

[–] Properties Type: event Visibility: public Source:

FireDAC.Comp.Client.pas

FireDAC.Comp.Client.hpp

Unit: FireDAC.Comp.Client Parent: TFDCustomConnection

Delphi

property OnError: TFDErrorEvent read FOnError write FOnError;

C++

__property Firedac::Stan::Error::TFDErrorEvent OnError = {read=FOnError, write=FOnError};

Description

Fires before FireDAC raises an exception inside of the commands, associated commands or dataset methods of the connection.

The event handler of OnError receives the following parameters:

• ASender is the connection.
• AInitiator is the object that raises the exception.
• AException is the exception. It is usually an instance of EFDDBEngineException.

You can handle OnError to analyze and modify the exception object. You can even create a new exception object and assign it to AException; if you do so, you must free the original exception object.

See Also

• Handling Errors
• FireDAC.Stan.Error.EFDDBEngineException