Throwing Remote Exceptions

Question

Hi everyone, I know there is a few threads about this but I'de like someone give me an concrete example:

My client makes a request to server using try catch:

Client

try

{

proxy.askServiceSomething();

}

catch (Exception ex)

{

}

in server side I throw an Exception

Server

void askServiceSomething()

{

throw new Exception("Hello");

}

but since the server doesn't have a try catch, this exception will trigger an error on server side. The client catches another type of exception, nothing to do with the one I threw ("Hello").

My questions are:

What kind of Exception do I have to throw in the server?

What kind of Exception do I have to catch at client side?

Can anyone give me a simple code example?

Thanx in advance

Answer 1

you can use faultcontract and throw faultexception<T>, detail can be found at

http://msdn2.microsoft.com/en-us/library/ms733721.aspx and

http://msdn2.microsoft.com/en-us/library/system.servicemodel.faultexception.aspx

 

Answer 2

Server exceptions are normally wrapped in a fault and thrown to the client which receives a generic fault exceptions . The normal approach is to throw a fault ( not an exception) of the appropriate types. The service should specify the allowed faults , its best not to have too many.  If its not a fault its an unknows error and should be consider as an error thet was not designed eg the same as null reference.

 

Its a pretty big topic ..

 

Regards,

 

Ben