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Navigation: Clarion.Net (Clarion#) > Clarion# Language Extensions > Exception Handling >====== THROW (signal an exception) ======

THROW expression

THROW	Generate a user-defined exception
expression	Any valid Clarion expression

THROW is used to signal any abnormal condition in a Clarion# program. It is user defined, and is used to send any message to the .NET Common Language Runtime (CLR) exception handler.

Examples:

CheckErr PROCEDURE

CODE

IF(ERRORCODE()<;>0)

THROW NEW DataException('ERROR: ' & ERROR())

END

CheckProdID PROCEDURE

CODE

IF(SELF.ProdID > 999999)

THROW NEW MyException('The value for the product ID was too big')

END

See also: Exception handling , TRY-CATCH-FINALLY