Exception with WCF

Question

What is the best way to resolve an exception from a WCF service? How can you throw an exception from WCF service?

0

Raja 02 jan. 09 at 22:44

3 answers

Richard L · Answer 1 · 2009-01-02T22:50:57+0000

Using faults.

or

Krzysztof Kozmic · Answer 2 · 2009-01-03T18:00:23+0000

FaultContract is the way to go. The MSDN link given in another answer is a good place to look. It should be noted, however, that:

Resist the temptation to place Exception-derived classes in response to an error

Do not follow FaultContract<ArgumentException>

Rather create FaultContract<NameCanNotHaveDigitsFault>

where NameCanNotHaveDigitsFault

is your domain specific class, not tied to a specific framework.

Sam · Answer 3 · 2009-01-21T11:38:03+0000

You can throw FaultExceptions from the wcf service, they will be passed back to the client.

Any other type of exception will put your communication channel into a bad mode, making it unusable.

So the easiest (quickest and dirtiest) way to throw exceptions in a wcf service is to wrap / modify them in FaultExceptions.