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DeliveryRequirementsAttribute Class

Specifies the feature requirements that bindings must provide to the service or client implementation.


Namespace:  System.ServiceModel
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

[AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Interface, AllowMultiple = true)]
public sealed class DeliveryRequirementsAttribute : Attribute, 
	IContractBehavior, IContractBehaviorAttribute

The DeliveryRequirementsAttribute type exposes the following members.

Public methodDeliveryRequirementsAttributeInitializes a new instance of the DeliveryRequirementsAttribute class.

Public propertyQueuedDeliveryRequirementsSpecifies whether the binding for a service must support queued contracts.
Public propertyRequireOrderedDeliverySpecifies whether the binding must support ordered messages.
Public propertyTargetContractGets or sets the type to which it applies.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)

Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
Explicit interface implemetationPrivate methodIContractBehavior.AddBindingParametersImplements the AddBindingParameters(ContractDescription, ServiceEndpoint, BindingParameterCollection) method to attach binding parameters correctly.
Explicit interface implemetationPrivate methodIContractBehavior.ApplyClientBehaviorImplementation of the ApplyClientBehavior(ContractDescription, ServiceEndpoint, ClientRuntime) method for client support.
Explicit interface implemetationPrivate methodIContractBehavior.ApplyDispatchBehaviorImplementation of the IContractBehavior.ApplyDispatchBehavior method that enables service support.
Explicit interface implemetationPrivate methodIContractBehavior.ValidateImplements the Validate(ContractDescription, ServiceEndpoint) method to enable validation support.

Use the DeliveryRequirementsAttribute to instruct to confirm that the binding provides the features required by the service or client implementation. If a DeliveryRequirementsAttribute attribute is detected when a service description is loaded from an application configuration file or built programmatically in code, validates the configured binding and supports all the features that the attribute specifies. For example, your service may require the bindings to support queuing. Using DeliveryRequirementsAttribute allows to confirm that the following requirements are met:

The DeliveryRequirementsAttribute attribute is applied to a class, which can implement any number of service contract interfaces. DeliveryRequirementsAttribute can be applied to all the contracts the class implements or to only one of them. The attribute can be applied to a class more than once.

using System;
using System.ServiceModel;

interface ICalculatorService
  int Add(int a, int b);  

  int Subtract(int a, int b);

class CalculatorService: ICalculatorService
  public int Add(int a, int b)
    Console.WriteLine("Add called.");
    return a + b; 

  public int Subtract(int a, int b)
    Console.WriteLine("Subtract called.");
    return a - b;

  public int Multiply(int a, int b)
    return a * b;

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.