c# - WCF 泛型类

Question

这如何作为 WCF 服务工作？

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; }
}

我想在 WCF 服务中公开 BusinessObject 类和所有继承 IEntity 接口(interface)的类。

我的代码使用 C#、.NET Framework 4.0，在 Visual Studio 2010 Pro 中构建。

Answer 1

在通过 WCF 向客户端公开 BusinessObject 时，您必须使用封闭的泛型来实现。

[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
}