Why OperationContract attribute required in WCF service function?

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Why OperationContract attribute required in WCF service function?

e.g

C#

[OperationContract]
public void DoWork()
{
    // Add your operation implementation here
    return;
}

// Add more operations here and mark them with [OperationContract]

Posted 15-Oct-11 2:24am

Pritesh Aryan

Updated 15-Oct-11 2:27am

v6

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3 solutions

Solution 1

You might want to start reading some books on WCF.
Here is a very basic read[^] that should give you some idea.
As this msdn link suggests, the OperationContractAttribute attribute declares that a method is an operation in a service contract.

Posted 15-Oct-11 2:31am

Abhinav S

Solution 2

because operation contract serialize method on network.
without attribute method can't access on client application

Posted 13-Jun-12 1:15am

GUL Muhammad

Updated 13-Jun-12 1:16am

v2

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Mukesh D Singh · Accepted Answer · 2012-10-14T03:28:00

Indicates that a method defines an operation that is part of a service contract in a Windows Communication Foundation (WCF) application.

the OperationContractAttribute properties to control the structure of the operation and the values expressed in metadata:

The Action property specifies the action that uniquely identifies this operation. WCF dispatches request messages to methods based on their action.

The AsyncPattern property indicates that the operation is implemented or can be called asynchronously using a Begin/End method pair.

The HasProtectionLevel property indicates whether the ProtectionLevel property has been explicitly set.

The IsOneWay property indicates that the operation only consists of a single input message. The operation has no associated output message.

The IsInitiating property specifies whether this operation can be the initial operation in a session.

The IsTerminating property specifies whether WCF attempts to terminate the current session after the operation completes.

The ProtectionLevel property specifies the message-level security that an operation requires at run time.

The ReplyAction property specifies the action of the reply message for the operation