WCF 异步调用

WCF 异步调用

说明: WCF客户端异步调用与服务端代码没有关系,只是和客户端的代码有关系。

服务端

服务接口:

代码
using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ServiceModel;

namespace ConsoleAsyService

{

/// <summary>

///

/// 测试异步运算器的接口

///

/// </summary>

[ServiceContract]

interface ICaculator

{

/// <summary>

/// 模拟异步统计的方法

/// </summary>

/// <returns></returns>

[OperationContract(IsOneWay
=false)]

int Count();

}

}

服务实现:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading;

namespace ConsoleAsyService

{

public class Caculator:ICaculator

{

#region ICaculator 成员

public int Count()

{

Console.WriteLine(
"receive call {0}", DateTime.Now);

Thread.Sleep(
10000);

Console.WriteLine(
"send result {0}", DateTime.Now);

return 100;

}

#endregion

}

}

 

客户端

调用过程

1. 添加服务引用

clip_image002

2. 设置服务引用

clip_image004

选中生成异步操作的复选按钮,系统默认的没选中,单击确定按钮,生成异步客户端调用代码。

代码

生成的客户端异步调用代码如下:

//------------------------------------------------------------------------------

// <auto-generated>

// 此代码由工具生成。

// 运行库版本:2.0.50727.1433

//

// 对此文件的更改可能会导致不正确的行为,并且如果

// 重新生成代码,这些更改将会丢失。

// </auto-generated>

//------------------------------------------------------------------------------

namespace WCFTest.AsyCaculator {

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]

[System.ServiceModel.ServiceContractAttribute(ConfigurationName="AsyCaculator.ICaculator")]

public interface ICaculator {

[System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/ICaculator/Count", ReplyAction="http://tempuri.org/ICaculator/CountResponse")]

int Count();

[System.ServiceModel.OperationContractAttribute(AsyncPattern=true, Action="http://tempuri.org/ICaculator/Count", ReplyAction="http://tempuri.org/ICaculator/CountResponse")]

System.IAsyncResult BeginCount(System.AsyncCallback callback, object asyncState);

int EndCount(System.IAsyncResult result);

}

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]

public interface ICaculatorChannel : WCFTest.AsyCaculator.ICaculator, System.ServiceModel.IClientChannel {

}

[System.Diagnostics.DebuggerStepThroughAttribute()]

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]

public partial class CountCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

private object[] results;

public CountCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

base(exception, cancelled, userState) {

this.results = results;

}

public int Result {

get {

base.RaiseExceptionIfNecessary();

return ((int)(this.results[0]));

}

}

}

[System.Diagnostics.DebuggerStepThroughAttribute()]

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]

public partial class CaculatorClient : System.ServiceModel.ClientBase<WCFTest.AsyCaculator.ICaculator>, WCFTest.AsyCaculator.ICaculator {

private BeginOperationDelegate onBeginCountDelegate;

private EndOperationDelegate onEndCountDelegate;

private System.Threading.SendOrPostCallback onCountCompletedDelegate;

public CaculatorClient() {

}

public CaculatorClient(string endpointConfigurationName) :

base(endpointConfigurationName) {

}

public CaculatorClient(string endpointConfigurationName, string remoteAddress) :

base(endpointConfigurationName, remoteAddress) {

}

public CaculatorClient(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) :

base(endpointConfigurationName, remoteAddress) {

}

public CaculatorClient(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) :

base(binding, remoteAddress) {

}

public event System.EventHandler<CountCompletedEventArgs> CountCompleted;

public int Count() {

return base.Channel.Count();

}

[System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]

public System.IAsyncResult BeginCount(System.AsyncCallback callback, object asyncState) {

return base.Channel.BeginCount(callback, asyncState);

}

[System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]

public int EndCount(System.IAsyncResult result) {

return base.Channel.EndCount(result);

}

private System.IAsyncResult OnBeginCount(object[] inValues, System.AsyncCallback callback, object asyncState) {

return this.BeginCount(callback, asyncState);

}

private object[] OnEndCount(System.IAsyncResult result) {

int retVal = this.EndCount(result);

return new object[] {

retVal};

}

private void OnCountCompleted(object state) {

if ((this.CountCompleted != null)) {

InvokeAsyncCompletedEventArgs e = ((InvokeAsyncCompletedEventArgs)(state));

this.CountCompleted(this, new CountCompletedEventArgs(e.Results, e.Error, e.Cancelled, e.UserState));

}

}

public void CountAsync() {

this.CountAsync(null);

}

public void CountAsync(object userState) {

if ((this.onBeginCountDelegate == null)) {

this.onBeginCountDelegate = new BeginOperationDelegate(this.OnBeginCount);

}

if ((this.onEndCountDelegate == null)) {

this.onEndCountDelegate = new EndOperationDelegate(this.OnEndCount);

}

if ((this.onCountCompletedDelegate == null)) {

this.onCountCompletedDelegate = new System.Threading.SendOrPostCallback(this.OnCountCompleted);

}

base.InvokeAsync(this.onBeginCountDelegate, null, this.onEndCountDelegate, this.onCountCompletedDelegate, userState);

}

}

}

客户端调用代码:

 

代码
Console.WriteLine("begin asyCall {0}", DateTime.Now);

AsyCaculator.CaculatorClient asyCaculatorClient 
= new WCFTest.AsyCaculator.CaculatorClient();

asyCaculatorClient.CountCompleted 
+= new EventHandler<WCFTest.AsyCaculator.CountCompletedEventArgs>(asyCaculatorClient_CountCompleted);

asyCaculatorClient.CountAsync();

Console.WriteLine(
"end asyCall{0}", DateTime.Now);

Console.Read();

 

 

调用完成后出发的事件:

 

static void asyCaculatorClient_CountCompleted(object sender, WCFTest.AsyCaculator.CountCompletedEventArgs e)

{

Console.WriteLine(
"Result={0},{1}", e.Result, DateTime.Now);

}

 

 

服务端运行结果:

clip_image006

客户端运行结果:

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注意结果输出的顺序。

posted @ 2011-02-10 10:52  b0b0  阅读(538)  评论(0编辑  收藏  举报