C# 2010 for Programmers, Fourth Edition

13. Exception Handling

Objectives

In this chapter you’ll learn:

• What exceptions are and how they’re handled.

• When to use exception handling.

• To use try blocks to delimit code in which exceptions might occur.

• To throw exceptions to indicate a problem.

• To use catch blocks to specify exception handlers.

• To use the finally block to release resources.

• The .NET exception class hierarchy.

• Exception properties.

• To create user-defined exceptions.

It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

—Franklin Delano Roosevelt

O! throw away the worser part of it, And live the purer with the other half.

—William Shakespeare

If they’re running and they don’t look ...