如何在ASP.NET mvc 6中指定多态类型

Question

我可以在以前版本的MVC中使用“TypeNameHandling = TypeNameHandling.Auto”。 在MVC6中，我有以下课程

public class BaseClass {
    public string Id {get;set;}
}
public class Foo : BaseClass {
    public string Name {get;set;}
    public string Address {get;set;}
}
public class Bar : BaseClass {
    public string Account {get;set;}
    public string Password {get;set;}
}

在我的webapi中，JSON结果将是以下

[
    {Id: "1", Name: "peter", Address: "address1"},
    {Id: "2", Account: "mary", Password: "1234"}
]

但我想要以下结果：

[
    {$type: "Foo", Id: "1", Name: "peter", Address: "address1"},
    {$type: "Bar", Id: "2", Account: "mary", Password: "1234"}
]

Answer 1

您可以在BaseClass中添加新字段：类型并在构造函数中初始化它：

public class BaseClass {
    public string Id {get;set;}

    public readonly string type;
    public BaseClass()
    {
        type = this.GetType().Name;
    }
}

在Foo类实例中，它将是＆＃34; Foo＆＃34;，在Bar - ＆＃34; Bar＆＃34;。