WCF通用类 [英] WCF Generic Class

问题描述

这怎么能作为一个WCF服务？

How can this work as a WCF Service?

public class BusinessObject<T> where T : IEntity
{
    public T Entity { get; set; }

    public BusinessObject(T entity)
    {
        this.Entity = entity;
    }
}

public interface IEntity { }

public class Student : IEntity
{
    public int StudentID { get; set; }
    public string Name { get; set; }
}

我想公开BusinessObject< T> class和继承WCF服务中的IEntity接口的所有类。

I want to expose the BusinessObject <T> class and the all the class that inherits the IEntity interface in the WCF Service.

我的代码使用C＃.NET Framework 4.0构建于Visual Studio 2010 Pro中。

My code is in C#, .NET Framework 4.0, build in Visual Studio 2010 Pro.

推荐答案

在通过WCF向客户端公开BusinessObject时，必须使用封闭的泛型类型。

While exposing BusinessObject to the clients via WCF, you must do that by using closed generic type.

[DataContract]
public class BusinessObject<T> where T : IEntity
{
    [DataMember]
    public T Entity { get; set; }

    public BusinessObject(T entity)
    {
        this.Entity = entity;
    }
}  

[ServiceContract]
interface IMyContract {
[OperationContract]
BusinessObject<Student> GetStudent(...) // must be closed generic
}

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