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Exception Error Handling Implementation in MySQL/VB.NET Windows Database Applications

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Old 02-10-2009
Exception Error Handling Implementation in MySQL/VB.NET Windows Database Applications
Error handling implementation in Windows database applications is a must for any Application Developer today. The main idea of error handling is to avoid application crashes by finding out the occurred errors and fixing them. Different programming languages have different ways of implementing error handling. Microsoft Visual Basic .NET (VB.NET) is the most common programming language for developing windows database applications today. VB.NET codes are provided in many websites, books and materials without error handling implementation. In this article I would like to introduce you to the basics of error handling implementation in MySQL/VB.NET windows database applications. I'll be covering structured exception error handling, which was introduced for the first time in VB.NET 2002. I will also go over the latest technologies of disposing unmanaged recourses in .NET Framework with the Using statement. To write exception errors to a log text file, a generic procedure will be developed while MySQL data is loading, inserting, updating and deleting.

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LEARN ABOUT DEBIAN

config::scoped::error

Config::Scoped::Error(3pm)				User Contributed Perl Documentation				Config::Scoped::Error(3pm)

NAME

       Config:Scoped::Error - an exception class hierarchy based on Error.pm for Config::Scoped

SYNOPSIS

	   use Config::Scoped::Error;

	   Config::Scoped::Error::Parse->throw(
	       -text => $parser_error,
	       -file => $config_file,
	       -line => $thisline,
	   );

	   Config::Scoped::Error::IO->throw(
	       -text => "can't open file: $!",
	       -file => $config_file,
	       -line => $thisline,
	   );

	   Config::Scoped::Error::Validate::Macro->throw(
	       -text => "macro redefinition: $macro_name",
	       -file => $config_file,
	       -line => $thisline,
	   );

DESCRIPTION

       Config::Scoped::Error is a class hierarchy based on Error.pm. The following Exception class hierarchy is defined:

	   Config::Scoped::Error

	       Config::Scoped::Error::Parse

	       Config::Scoped::Error::Validate

		   Config::Scoped::Error::Validate::Macro

		   Config::Scoped::Error::Validate::Parameter

		   Config::Scoped::Error::Validate::Declaration

		   Config::Scoped::Error::Validate::Permissions

	       Config::Scoped::Error::IO

SEE ALSO

       Config::Scoped, Error

AUTHOR

       Karl Gaissmaier <karl.gaissmaier at uni-ulm.de>

COPYRIGHT AND LICENSE

       Copyright (c) 2004-2008 by Karl Gaissmaier

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-03-16						Config::Scoped::Error(3pm)