WCF Interface Design: No Ref Parameters or Parameters

Question

I have a WCF service and a web client. The web service implements one SubmitOrders method. This method takes a set of orders. The problem is that the service must return an array of results for each order - true or false. Marking WCF parameters as outside or ref does not make sense. What would you recommend?

[ServiceContact] public bool SubmitOrders(OrdersInfo) [DataContract] public class OrdersInfo { Order[] Orders; } 

Answer 1

Marking WCF parameters as outside or ref does not make sense.

Options

out make sense in WCF.

What would you recommend?

I recommend using options.

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Note 1: It will move your out parameter to the first parameter.

Note 2: Yes, you can return objects with complex types in WCF. Mark your class with the [DataContract] attribute and your properties with the [DataMember] attribute.

Answer 2

Use a complex type (another class with a DataContract attribute) in reverse order.

how

 [ServiceContact] public OrdersResult SubmitOrders(OrdersInfo) [DataContract] public class OrdersInfo { Order[] Orders; } [DataContract] public class OrdersResult { ..... } 

Also add DataMember to Order[] Orders;

Answer 3

Well, if you want to avoid parameters and ref, you can always return an array of order IDs that were sent successfully.

Answer 4

Yes, it makes sense to return the out parameter for WCF operations. In response to the message, SOAP will contain the element passed back.

MSDN has good data transfer content: Indication of data transfer in service contracts

In addition, you need to use OperationContractAttribute (not ServiceContractAttribute) on SubmitOrders.

Answer 5

A special class that contains order and true / false, or an array of tags.

Answer 6

The method will look like this:

 public OrdersInfo SubmitOrders(OrderInfo orders){ } 

where each item in OrderInfo will have a SubmissionStatusInfo, for example:

 class SubmissionStatusInfo{ enum Status { get; set; } string Message { get; set; } } 

where Status : Submitted, Failed, Error , etc.
Message : a string giving some additional status information ...

NTN