一个通信会话过程有两个部分组成，客户端和服务端，他们要进行会话就必然有共同的语言约定，在WCF中这称为契约(contract)，定义好通信的约定后，服务端需要确定服务的具体内容，即为配置、运行服务、开放终结点。客户端描述如何从 WCF 服务检索用于创建 WCF 客户端的元数据。
第一、建立契约
代码
using
System;
using System.ServiceModel;
namespace Microsoft.ServiceModel.Samples
{
ServiceContract(Namespace = “http: // wengyuli”)]
public interface ICalculator
{
[OperationContract]
double Add( double n1, double n2);
｝
}
using System.ServiceModel;
namespace Microsoft.ServiceModel.Samples
{
ServiceContract(Namespace = “http: // wengyuli”)]
public interface ICalculator
{
[OperationContract]
double Add( double n1, double n2);
｝
}
第二、实现契约
public
class
CalculatorService : ICalculator
{
public double Add( double n1, double n2)
{
double result = n1 + n2;
return result;
}
}
{
public double Add( double n1, double n2)
{
double result = n1 + n2;
return result;
}
}
第三、发布服务
代码
static
void
Main(
string
[] args)
{
Uri baseAddress = new Uri( " http://localhost:8000/wengyuli/Service " );
ServiceHost serviceHost = new ServiceHost( typeof (CalculatorService), baseAddress);
try
{
serviceHost.AddServiceEndpoint( typeof (ICalculator), new WSHttpBinding(), " CalculatorService " );
ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
smb.HttpGetEnabled = true ;
serviceHost.Description.Behaviors.Add(smb);
serviceHost.Open();
Console.WriteLine( " The service is ready. " );
Console.WriteLine( " Press <ENTER> to terminate service. " );
Console.WriteLine();
Console.ReadLine();
serviceHost.Close();
}
catch (CommunicationException ce)
{
Console.WriteLine( " An exception occured: {0} " , ce.Message);
serviceHost.Abort();
}
}
{
Uri baseAddress = new Uri( " http://localhost:8000/wengyuli/Service " );
ServiceHost serviceHost = new ServiceHost( typeof (CalculatorService), baseAddress);
try
{
serviceHost.AddServiceEndpoint( typeof (ICalculator), new WSHttpBinding(), " CalculatorService " );
ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
smb.HttpGetEnabled = true ;
serviceHost.Description.Behaviors.Add(smb);
serviceHost.Open();
Console.WriteLine( " The service is ready. " );
Console.WriteLine( " Press <ENTER> to terminate service. " );
Console.WriteLine();
Console.ReadLine();
serviceHost.Close();
}
catch (CommunicationException ce)
{
Console.WriteLine( " An exception occured: {0} " , ce.Message);
serviceHost.Abort();
}
}
第四、调用服务
代码
static
void
Main(
string
[] args)
{
// Create an instance of the WCF Client.
System.ServiceModel.EndpointAddress epAddress = new EndpointAddress( " http://localhost:8000/wengyuli/Service/CalculatorService " );
CalculatorClient client = new CalculatorClient( new WSHttpBinding(), epAddress);
int value1 = 2 ;
int value2 = 5 ;
int result = client.Add(value1, value2);
Console.WriteLine( " Add({0},{1}) = {2} " , value1, value2, result);
client.Close();
Console.WriteLine();
Console.WriteLine( " Press <ENTER> to terminate client. " );
Console.ReadLine();
}
{
// Create an instance of the WCF Client.
System.ServiceModel.EndpointAddress epAddress = new EndpointAddress( " http://localhost:8000/wengyuli/Service/CalculatorService " );
CalculatorClient client = new CalculatorClient( new WSHttpBinding(), epAddress);
int value1 = 2 ;
int value2 = 5 ;
int result = client.Add(value1, value2);
Console.WriteLine( " Add({0},{1}) = {2} " , value1, value2, result);
client.Close();
Console.WriteLine();
Console.WriteLine( " Press <ENTER> to terminate client. " );
Console.ReadLine();
}
本文转自wengyuli 51CTO博客，原文链接：http://blog.51cto.com/wengyuli/588598，如需转载请自行联系原作者
