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Object-oriented Programming in C# Exception Handling * Fundamental Questions about Exception Handling What is the motivation? What is an error? What is normal? What is exceptional? Examples of normal and exceptional aspects When are errors detected? How are errors handled? Where are errors handled? * Conventional Exception Handling Exception Handling Approaches Mixing normal and exceptional cases * Object-oriented Exception Handling Errors as Objects Classification of Errors * Exceptions and Exception Handling in C# Exceptions in a C# program The try-catch statement C# Handling exceptions in C# The hierarchy of exceptions in C# The class System.Exception in C# Handling more than one type of exception in C# Propagation of exceptions in C# Raising and throwing exceptions in C# Try-catch with a finally clause Rethrowing an exception Raising an exception in an exception handler Comparison with exception handling in Java * Recommendations about exception handling Recommendations about exception handling Recommendations about exception handling

Rethrowing an exception.

Output from the program that rethrows an exception.

Touching, but not handling the exception An outer handler will see the original exception