入门代码教程第二节 如何：实现服务协定

如何：实现 Windows Communication Foundation 服务协定

实现 WCF 服务协定

创建一个新 CalculatorService 类，该类从用户定义的 ICalculator 接口继承而来并实现该接口定义的协定功能。

实现每个算术运算符的功能。

示例

using System;

using System.ServiceModel;

namespace Microsoft.ServiceModel.Samples

{

// Define a service contract.

[ServiceContract(Namespace = "http://Microsoft.ServiceModel.Samples")]

public interface ICalculator

{

[OperationContract]

double Add(double n1, double n2);

[OperationContract]

double Subtract(double n1, double n2);

[OperationContract]

double Multiply(double n1, double n2);

[OperationContract]

double Divide(double n1, double n2);

}

// Step 1: Create service class that implements the service contract.

public class CalculatorService : ICalculator

{

// Step 2: Implement functionality for the service operations.

public double Add(double n1, double n2)

{

double result = n1 + n2;

Console.WriteLine("Received Add({0},{1})", n1, n2);

// Code added to write output to the console window.

Console.WriteLine("Return: {0}", result);

return result;

}

public double Subtract(double n1, double n2)

{

double result = n1 - n2;

Console.WriteLine("Received Subtract({0},{1})", n1, n2);

Console.WriteLine("Return: {0}", result);

return result;

}

public double Multiply(double n1, double n2)

{

double result = n1 * n2;

Console.WriteLine("Received Multiply({0},{1})", n1, n2);

Console.WriteLine("Return: {0}", result);

return result;

}

public double Divide(double n1, double n2)

{

double result = n1 / n2;

Console.WriteLine("Received Divide({0},{1})", n1, n2);

Console.WriteLine("Return: {0}", result);

return result;

}

}

}

创建和实现了服务协定后，创建 WCF 服务的下一步是运行该服务。 运行服务由三个步骤组成：配置、承载和打开服务。