Delphi in a Nutshell

Name

Except Keyword

Syntax

try Statements... except Statements... end;
try Statements... except Exception handlers... end;

Description

The except keyword is part of a try-except block. The try part lists statements that Delphi executes, and the except part lists exception handlers, which Delphi executes only if a statement in the try part raises an exception.

The try-except statement has two varieties:

• The first kind has a list of statements in the except part. If any exception occurs, Delphi executes the statements in the except part. If the statements do not raise another exception, the program continues with the statement following the end of the try-except statement.

• The second kind has a list of exception handlers in the except part. Each exception handler starts with the on directive and specifies an exception class. The except part traps only the exceptions listed in the exception handlers. The last handler can be an else clause to trap all other exceptions. If an exception does not match any of the listed exception handlers, and the except part has no else clause, Delphi reraises the exception (just as though you had used else raise as the last exception handler).

For examples and more information about exception handlers, see the try keyword.

See Also

Finally Keyword, On Directive, Raise Keyword, Try Keyword