When you specify an exception type to catch in a handler, the handler will catch all exceptions whose type matches the specified type. It will also catch exceptions where the exception object’s type is a type that derives from the specified type.
In the example below, we catch exceptions of type System.ArgumentException. This handler will catch exceptions where the exception object’s type is:
- ArgumentException
- ArgumentNullException (derives from ArgumentException)
- ArgumentOutOfRangeException (derives from ArgumentException)
- Any custom exception types you define that derive from ArgumentException or from one of its child classes
- Various other exception types in the Framework that derive from ArgumentException
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| try{ Dog d = new Dog("Bob", 3); d.Bark();}catch (ArgumentException exc){ Console.WriteLine("You've got a problem with an argument"); Console.WriteLine(exc.Message);} |