现网上关于WCF所谓是很多,但好书很少.Programming WCF Services 应该算是一本非常好的书。结合书和代码总结一下.

一.服务器端操作重载

1.接口本身支持重载

interface ICalculator{int Add(int arg1, int arg2);double Add(double arg1, double arg2);}

2.若将此接口作为服务契约,WSDL规定方法不可重载

以下定义是错误的

//Invalid contract definition:[ServiceContract]interface ICalculator{[OperationContract]int Add(int arg1, int arg2);[OperationContract]double Add(double arg1, double arg2);}

3.可以用OperationContract的Name属性设置方法的别名

[ServiceContract]interface ICalculator{[OperationContract(Name = "AddInt")]int Add(int arg1, int arg2);[OperationContract(Name = "AddDouble")]double Add(double arg1, double arg2);}

这样客户端就会生成AddInt和AddDouble方法.客户端会生成如下代码

[ServiceContract]interface ICalculator{[OperationContract]int AddInt(int arg1, int arg2);[OperationContract]double AddDouble(double arg1, double arg2);}class CalculatorClient : ClientBase<ICalculator>, ICalculator{public int AddInt(int arg1, int arg2){return Channel.AddInt(arg1, arg2);}public double AddDouble(double arg1, double arg2){return Channel.AddDouble(arg1, arg2);}//Rest of the proxy}

最好是避免这种写法，直接修改方法名

二.客户端操作重载

也可以在客户端指定别名

[ServiceContract]interface ICalculator{[OperationContract(Name = "AddInt")]int Add(int arg1, int arg2);[OperationContract(Name = "AddDouble")]double Add(double arg1, double arg2);}class CalculatorClient : ClientBase<ICalculator>, ICalculator{public int Add(int arg1, int arg2){return Channel.Add(arg1, arg2);}public double Add(double arg1, double arg2){return Channel.Add(arg1, arg2);}//Rest of the proxy}