#895 – Catching a Custom Exception Type

You might define a custom exception if you want to add custom data to an exception that you throw or if you just want calling code to be able to check for your specific exception.

In the example below, we’ve created a custom exception type, DogBarkException, that we throw when we have a problem in the Dog.Bark method.  The exception contains all of the normal data found in an instance of Exception, as well as additional information about the dog and the attempted bark.

            try
            {
                Dog d = new Dog("Buster", 5);
                d.Bark(BarkSound.Woof, 12);
            }
            catch (DogBarkException xx)
            {
                Console.WriteLine(xx.ToString());
                Console.WriteLine("Dog {0}, aged {1}, couldn't bark",
                    xx.DogName, xx.DogAge);
                Console.WriteLine("  Attempted {0} bark, {1} times",
                    xx.BarkSound, xx.BarkNumTimes);
            }

If we set a breakpoint within the catch block, we can examine the various properties of the DogBarkException object.

895-001

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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

One Response to #895 – Catching a Custom Exception Type

  1. Pingback: Dew Drop – July 25, 2013 (#1,592) | Alvin Ashcraft's Morning Dew

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