Questions tagged [messagecontract]

Windows Communication Foundation (WCF) MessageContract Attribute defines a strongly-typed class that corresponds to a SOAP message.

Windows Communication Foundation (WCF) MessageContract Attribute allows complete control over the structure of a SOAP message. This is especially important for interoperability or to specifically control security issues at the level of the message or message part. In these cases, you can create a message contract that enables you to specify the structure of the precise SOAP message required.

To define a message contract for a type (that is, to define the mapping between the type and a SOAP envelope), apply the MessageContractAttribute to the type. Then apply the MessageHeaderAttribute to those members of the type you want to make into SOAP headers, and apply the MessageBodyMemberAttribute to those members you want to make into parts of the SOAP body of the message.

In the SOAP representation of a message contract, each header and body part maps to an XML element that has a name and a namespace. By default, the namespace is the same as the namespace of the service contract that the message is participating in, and the name is determined by the member name to which the MessageHeaderAttribute or the MessageBodyMemberAttribute attributes are applied.

http://msdn.microsoft.com/en-us/library/ms730255(v=vs.110).aspx

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Add Service Reference is generating Message Contracts

When I import a given service using "Add service Reference" on Visual Studio 2008 (SP1) all the Request/Response messages are being unnecessarily wrapped into Message Contracts (named as --> "operationName" + "Request"/"Response" + "1" at the…
JohnIdol
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Use of MessageContract crashes WCF service on startup

I'm trying to add a MessageContract to my WCF service, similar to what's going on in this question: WCF: using streaming with Message Contracts Here's the exception I get: The operation 'UploadFile' could not be loaded because it has a parameter or…
rafale
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(WCF) elementFormDefault="qualified" and attributeFormDefault="qualified" possible

Situation: I need to build a webservice based on an XSD. It is possible to make an WCF webservice when the XSD says: elementFormDefault="qualified" attributeFormDefault="qualified" OR elementFormDefault="unqualified"…
Aldwoni
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Customize SOAP Header namespace prefixes in WCF

I have wrote about a way to customize namespaces and namespace prefixes in a SOAP message generated by wcf here. However, I can't find a proper method to override in the Message class in order to customize the SOAP headers of the messages. I want to…
Cosmin Vană
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could not be loaded because it has a parameter or return type of type System.ServiceModel.Channels.Message or a type that

All, i'm getting following error while loading WCF Sevice. The operation 'GetEffort' could not be loaded because it has a parameter or return type of type System.ServiceModel.Channels.Message or a type that has MessageContractAttribute and other…
Binu Bhasuran
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Optional enumeration with WCF client

I am working with an external vendor's web service that appears to be implemented in Java (I believe Apache Axis), and I'm consuming it with a WCF client. Several of the operations require input parameters of type enumeration. The problem is that…
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How can I convert an XML file to an instance of a MessageContract class?

I'm attempting to test a [MessageContract] class against an existing sample message, and I'm looking for a way to simplify development by reading the sample message file into an instance of my [MessageContract] class and seeing how it worked out…
Mark
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Can a WCF Operation that takes a single array as a parameter use MessageContracts?

I am trying to replace an asmx WebService with a WCF service. My primary goal is to keep the SOAP message the same. The caller is not .NET, and would require significant re-work to take minor changes to the contract. My pain point is that the web…
brian chandley
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WCF OperationContract and dynamic parameter

I have a WCF Service that based on Writing Highly Maintainable WCF Services. Requests are processed using a…
David Clarke
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MessageContract - invalid method generation

I have the following wcf service: [ServiceContract] public interface IUnitTestingService { [OperationContract] TestsResult ExecuteUnitTests(UploadRequest unitTestsExecutionData); } // Use a data contract as illustrated in the sample below…
seeker
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WCF DataContractSerializer doesn't pick up contract attributes... why not?

I have the following type which I use as a message contract in WCF: [MessageContract(IsWrapped = true, WrapperNamespace = "http://example.com/services", WrapperName = "EchoRequest")] public class EchoRequest { …
codekaizen
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WCF MessageBodyMember with Complex Type and namespace

I Have to implement a WCF service for a given client, so the namespaces and the Contract is not defined by me. The problem is, when I use a complex type as a MessageBodyMember, on the server side the given member is set to null in my server…
Babak
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KnownType for MessageContract in WCF

I am using Stream object inside my wcf Contracts so forced to use MessageContract instead of DataContract. [MessageContract] public class Document { [MessageBodyMember(Order = 1)] public System.IO.Stream FileData; } …
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WCF "Always generate message contracts" does not generate MessageContract

I'm importing a WSDL as a service definition (inbound to my service), and for whatever reason the client is formatting the request such that WCF cannot deserialize it without the proxy classes having MessageContract decorations. I've gotten it to…
Matt Mills
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How do I implement a WCF Streaming operation that streams data in, processes it, streams it back(with MessageContracts)?

I have a requirement for a WCF service operation that accepts a large Stream, processes it and returns that stream. I used an MSDN article on Large Data Streaming as a reference to what I need. I followed the advice in that article. Asking the…
tinonetic
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