In this chapter you’ll:

• Understand what exceptions are and how they’re handled.

• Learn when to use exception handling.

• Use try blocks to delimit code that may throw exceptions.

• Use throw to indicate a problem at runtime.

• Use catch blocks to specify exception handlers.

• Understand what happens to uncaught exceptions.

• Understand the mechanics of the termination model of exception handling.

• Use the finally block to release resources.

• See how a using statement can auto-release resources.

• Understand .NET exception class hierarchy.

• Use Exception properties.

• Create new exception types.

• Use C# 6’s null-conditional operator (?.) to determine whether a reference is null before using it to call a method or access a property.

• Use nullable value types to specify that a variable may contain a value or null.

• Use C# 6 exception filters to specify a condition for catching an exception.