1. 合约
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
namespace Contracts
{
[ServiceContract]
public interface ILongworker
{
[OperationContract]
void Dowork();
}
}
2. 服务
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Services
{
public class LongworkService:Contracts.ILongworker
{
#region ILongworker 成员
public void Dowork()
{
//这是一个长时间工作的服务方法
System.Threading.Thread.Sleep(10000);//设置休眠10秒钟
Console.WriteLine("服务器执行完了操作");
}
#endregion
}
}
3. 宿主
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.ServiceModel.Description;
namespace LongworkServiceHost
{
class Program
{
static void Main(string[] args)
{
#region 长时间工作的服务
using (ServiceHost host =
new ServiceHost(
typeof(Services.LongworkService),
new Uri("http://localhost:8000/LongworkService")
))
{
host.AddServiceEndpoint(
"Contracts.ILongworker",
new BasicHttpBinding(),
"");
ServiceMetadataBehavior behavior = new ServiceMetadataBehavior();
behavior.HttpGetEnabled = true;
host.Description.Behaviors.Add(behavior);
host.AddServiceEndpoint(
"IMetadataExchange",
MetadataExchangeBindings.CreateMexHttpBinding(),
"mex");
host.Open();
Console.WriteLine("服务器已经准备好");
Console.Read();
}
#endregion
}
}
}
4. 客户端
首先如何生成带有异步操作的代理类。可以采用带有/a参数的svcutil工具,也可以在添加引用那个对话框中指定生成异步操作,如下图所示
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
namespace LongworkServiceClient
{
class Program
{
static void Main(string[] args)
{
//第一步:默认的调用(同步)
//Contracts.ILongworker proxy =
// new ChannelFactory
(
// new BasicHttpBinding(),
// new EndpointAddress("http://localhost:8000/LongworkService")).CreateChannel();
//Console.WriteLine("同步调用开始于:{0}", DateTime.Now);
//proxy.Dowork();
//Console.WriteLine("同步调用结束于:{0}", DateTime.Now);
//Console.Read();
//第二步:采用异步的调用
//svcutil.exe http://localhost:8000/LongworkService?wsdl /a 创建异步委托
//通过添加服务中指定异步选项创建代理类
LongworkerClient client = new LongworkerClient(
new BasicHttpBinding(),
new EndpointAddress("http://localhost:8000/LongworkService"));
Console.WriteLine("开始异步调用于:{0}", DateTime.Now);
//client.Dowork();//如果这样调用,则是同步调用
client.BeginDowork(new AsyncCallback(OnCallback), null);
Console.WriteLine("客户端继续其他的操作...");
Console.Read();
}
static void OnCallback(IAsyncResult ar) {
Console.WriteLine("服务调用结束于:{0}", DateTime.Now);
}
}
}