擴展WCF?消息編碼綁定，需實現MessageEncodingBindingElement，MessageEncoder,MessageEncoderFactory.如果希望通過配置的方式應用我們實現的綁定，則還需要實現BindingElementExtensionElement。

　　首先從消息編碼綁定實現開始；實現MessageEncoderBindingElement

public abstract class CommonMessageEncodingBindingElement : MessageEncodingBindingElement{protected MessageEncodingBindingElement innerBindingElement;protected CommonMessageEncodingBindingElement() : this(new TextMessageEncodingBindingElement()){}protected CommonMessageEncodingBindingElement(MessageEncodingBindingElement textMessageEncodingBindingElement){innerBindingElement = textMessageEncodingBindingElement;}public MessageEncodingBindingElement InnerBindingElement{get { return innerBindingElement; }set { innerBindingElement = value; }}public override MessageVersion MessageVersion{get { return innerBindingElement.MessageVersion; }set { innerBindingElement.MessageVersion = value; }}public override IChannelFactory<TChannel> BuildChannelFactory<TChannel>(BindingContext context){context.BindingParameters.Add(this);return context.BuildInnerChannelFactory<TChannel>();}public override IChannelListener<TChannel> BuildChannelListener<TChannel>(BindingContext context){context.BindingParameters.Add(this);return context.BuildInnerChannelListener<TChannel>();}public override bool CanBuildChannelFactory<TChannel>(BindingContext context){return innerBindingElement.CanBuildChannelFactory<TChannel>(context);}}

　　其次；實現MessageEncoder。代碼如下；

public abstract class CommonMessageEncoder:MessageEncoder{public MessageEncoder encoder;protected CommonMessageEncoder(MessageEncoder messageEncoder){encoder = messageEncoder;}public override string ContentType{get { return encoder.ContentType; }}public override string MediaType{get { return encoder.MediaType; }}public override MessageVersion MessageVersion{get { return encoder.MessageVersion; }}}

　　再次；實現ServerMessageEncoderFactory

internal class ServerMessageEncoderFactory : MessageEncoderFactory{private readonly MessageEncoder encoder;public ServerMessageEncoderFactory(MessageEncoderFactory messageEncoderFactory){encoder = new ServerMessageEncoder(messageEncoderFactory.Encoder);}public override MessageEncoder Encoder{get { return encoder; }}public override MessageVersion MessageVersion{get { return encoder.MessageVersion; }}}

最后通過配置應用到WCF 。配置實現開始；實現BindingElementExtensionElement.

public class ServerBindingExtension : CommonBindingElementExtensionElement{public override Type BindingElementType{get { return typeof (ServerMessageEncodingBindingElement); }}protected override BindingElement CreateBindingElement(){ServerMessageEncodingBindingElement serverMessageEncodingBindingElement =new ServerMessageEncodingBindingElement();ApplyConfiguration(serverMessageEncodingBindingElement);return serverMessageEncodingBindingElement;}}

　 服務端配置；

<system.serviceModel><extensions><bindingElementExtensions><add name="myCustomerBinding" type="Hosting.ServerBindingExtension,Hosting"/></bindingElementExtensions></extensions><bindings><customBinding><binding name="customerBinding"><myCustomerBinding/><httpTransport/></binding></customBinding></bindings><services><service name="Service.AddService"><endpoint address="http://127.0.0.1:8088/AddService" binding="customBinding" contract="Contract.IAdd" bindingConfiguration="customerBinding" ></endpoint></service></services></system.serviceModel>

?

客戶端配置；

<system.serviceModel><extensions><bindingElementExtensions><add name="clientBinding" type="Client.ClientBindingExtension,Client"/></bindingElementExtensions><behaviorExtensions><add name="clientEndpoint" type="Client.ClientMessageInspector,Client"/></behaviorExtensions></extensions><behaviors><endpointBehaviors><behavior><clientEndpoint /></behavior></endpointBehaviors></behaviors><bindings><customBinding><binding name="customerBinding"><clientBinding /><httpTransport></httpTransport></binding></customBinding></bindings><client><endpoint address="http://127.0.0.1:8088/AddService"binding="customBinding"contract="Contract.IAdd"name="customEndpoint" bindingConfiguration="customerBinding"></endpoint></client></system.serviceModel>

?? ?服務端運行圖；

　　客戶端調用效果；

代碼；http://download.csdn.net/detail/tyb1222/6842555

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