Question

我是WCF的新手，现在陷入了在WCF服务中使用自定义类型的问题。

我在TestClass项目中有两个类Class1和Class2

public Class1: ArrayList{
    public string street;
}

public Class2{
    public string name;
    public string address;
}

我的WCF服务TestService包含使用上面两个类的函数DoSomething

public string DoSomething(Class1 c1){
     return c1.street; 
}

当试图调用此函数时

Class1 c1 = new Class1();
Class2 c2 = new Class2();
c1.Add(c2);
ServiceClient1.Dosomething(c1);

我得到了例外

There was an error while trying to serialize parameter http://tempuri.org/:c1. The 
InnerException message was 'Type 'WebApplication1.Class2' with data contract name 
'Class2:http://schemas.datacontract.org/2004/07/WebApplication1' is not expected. Add 
any types not known statically to the list of known types - for example, by using the  
KnownTypeAttribute attribute or by adding them to the list of known types passed to  
DataContractSerializer.'.  Please see InnerException for more details.

任何人都可以告诉我如何为在WCF服务之外定义的类添加DataContract，以及如何解决此问题。非常感谢！

Answer 1

将以下行添加到服务接口声明中（将它们添加到ServiceContract属性下面）：

[ServiceKnownType(typeof(Class1))]
[ServiceKnownType(typeof(Class2))]

或者，这是推荐的方法，定义服务导出的DTO对象集，并使用[DataContract]和[DataMember]属性修饰它们。

在WCF服务中使用自定义类型

1 个答案: