WCF 服务:返回自定义对象 [英] WCF service: Returning custom objects

问题描述

我在我的应用程序中使用 WCF 服务.我需要在服务类中返回一个自定义对象.方法如下:

I'm using WCF service in my application. I need to return a custom object in the service class. The method is as follows:

IService.cs:
[OperationContract]
object GetObject();

Service.cs
public object GetObject() 
{
  object NewObject = "Test";
  return NewObject;
}

每当我调用该服务时，它都会抛出异常并显示以下消息:

Whenever i make a call to the service, it throws an exception with the following message:

System.ServiceModel.CommunicationException: "An error occured while receiving the HTTP response to <service path>"

内部异常:

System.Net.WebException: "The underlying connection was closed. An unexpected error occured on receive"

我们不能从 WCF 服务返回对象类型或自定义对象吗?

Can't we return object types or custom objects from the WCF service?

推荐答案

你应该返回一个用 DataContract 属性标记的类的实例:

You should return an instance of a class that is marked with the DataContract attribute:

[DataContract]
public class MyClass
{
    [DataMember]
    public string MyString {get; set;}
}

现在像这样改变你的服务接口:

Now change your service interface like so:

[OperationContract]    
MyClass GetMyClass();  

以及您的服务:

public MyClass GetMyClass()      
{     
    return new MyClass{MyString = "Test"};     
} 

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