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Note

If you fail to handle an exception thrown by a method in the .NET base class libraries, the Visual Studio

2008 debugger breaks at the statement that called the offending method.

Summary

In this chapter, you examined the role of structured exception handling. When a method needs to

send an error object to the caller, it will allocate, configure, and throw a specific System.Exception

derived type via the C# throw keyword. The caller is able to handle any possible incoming excep-

tions using the C# catch keyword and an optional finally scope.

When you are creating your own custom exceptions, you ultimately create a class type deriving

from System.ApplicationException, which denotes an exception thrown from the currently execut-

ing application. In contrast, error objects deriving from System.SystemException represent critical

(and fatal) errors thrown by the CLR. Last but not least, this chapter illustrated various tools within

Visual Studio 2008 that can be used to create custom exceptions (according to .NET best practices)

as well as debug exceptions.

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