Two ways that WCF clients invoke service operations

The main content of this section: 1, the service operation is invoked through the proxy class. 2. Invoke the service operation through the channel. 3. Code download

I. Invoking service operations through proxy classes (two ways to add proxy classes)

1. Manually write the proxy class as follows:

Client contract:

 using   System;  using   System.Collections.Generic;  using   System.Linq;  using   System.Text;  using   System.ServiceModel;  namespace   y.wcffirst.client.proxys{[ServiceContract]   Public  interface   Ihello {[Operationco Ntract]  string  Say (string   name); }}

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Client proxy class:

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.ServiceModel;usingSystem.ServiceModel.Channels;namespacey.wcffirst.client.proxys{ Public classHelloproxy:clientbase<ihello>, Ihello { Publichelloproxy ():Base()        {        }         Public stringSay (stringname) {            return Base.        Channel.say (name); }    }}

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Client App. Config file:

<?xml version="1.0"encoding="Utf-8"?><configuration> <system.serviceModel> <client> <endpoint name="Wcffirst"Address="Net.tcp://localhost:6666/hello"binding="nettcpbinding"Contract="Y.wcffirst.client.proxys.ihello"></endpoint> </client> </system.serviceModel></configuration>

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Client-side invocation:

using New Helloproxy ()) {                  Console.WriteLine ("Recevie from server:{0}", Proxy. Say (name));                     Proxy. Close ();}

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2. The proxy class is generated by the metadata method.

The server needs to configure App. Config as follows:

Client operation steps: First run the server side (host).

A. Click the Add Service Reference button on the client side to add the service reference. Such as:

B. Enter address: http://localhost:8888, click "GO" to get the service operation. and rename the namespace, such as:

C. The client calls to the proxy class.

using New helloclient ()) {                    Console.WriteLine ("Recevie from server:{0}", Clientproxy.say (name));                     Clientproxy.close ();}

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Second, invoke the service operation through the channel mode

1. Client contract, as follows

 using   System;  using   System.Collections.Generic;  using   System.Linq;  using   System.Text;  using   System.ServiceModel;  namespace   y.wcffirst.clientchannel.proxy{[ServiceContract]  public  interface   Ihello {[Operationc Ontract]  string  Say (string   name); }}

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2. Settings for the client configuration file are as follows:

<?xml version="1.0"encoding="Utf-8"?><configuration> <system.serviceModel> <client> <endpoint name="Wcffirst"Address="Net.tcp://localhost:6666/hello"binding="nettcpbinding"Contract="Y.wcffirst.clientchannel.proxy.ihello"></endpoint> </client> </system.serviceModel></configuration>

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3. Client Invoke service operation: as follows:

New Channelfactory<ihello> ("wcffirst");                 = Factory. CreateChannel ();                 using  as IDisposable)                {                    Console.WriteLine ("Recevie from server:{0}", Channelproxy.say ( name));                }

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Two ways that WCF clients invoke service operations