Wcf exception handling throw an error - wcf

Question

Hi I have a problem handling exceptions in wcf.
I have a service like this one:
[ServiceContract]
public interface IAddressService
{
[OperationContract]
[FaultContract(typeof(ExecuteCommandException))]
int SavePerson(string idApp, int idUser, Person person);
}
I am calling the SavePerson() on the service in the WCFTestClient utility.
The SavePerson() implementation is:
public int SavePerson(string idApp, int idUser, Person person)
{
try
{
this._savePersonCommand.Person = person;
this.ExecuteCommand(idUser, idApp, this._savePersonCommand);
return this._savePersonCommand.Person.Id;
}
catch (ExecuteCommandException ex)
{
throw new FaultException<ExecuteCommandException>(ex, new FaultReason("Error in 'SavePerson'"));
}
}
But I get this error:
Failed to invoke the service. Possible
causes: The service is offline or
inaccessible; the client-side
configuration does not match the
proxy; the existing proxy is invalid.
Refer to the stack trace for more
detail. You can try to recover by
starting a new proxy, restoring to
default configuration, or refreshing
the service.
if I change the SavePerson method and instead of:
catch (ExecuteCommandException ex)
{
throw new FaultException<ExecuteCommandException>(ex, new FaultReason("Error in 'SavePerson'"));
}
I do
catch(Exception)
{
throw;
}
I don't get the above error, but I only get the exception message and no inner exception.
What am I doing wrong?

Answer 1

When you define the fault contract:
[FaultContract(typeof(ExecuteCommandException))]
you must not specify an exception type. Instead, you specify a data contract of your choice to pass back any values that you deem necessary.
For example:
[DataContract]
public class ExecuteCommandInfo {
[DataMember]
public string Message;
}
[ServiceContract]
public interface IAddressService {
[OperationContract]
[FaultContract(typeof(ExecuteCommandInfo))]
int SavePerson(string idApp, int idUser, Person person);
}
catch (ExecuteCommandException ex) {
throw new FaultException<ExecuteCommandInfo>(new ExecuteCommandInfo { Message = ex.Message }, new FaultReason("Error in 'SavePerson'"));
}