有没有办法将动态或匿名对象转换为强类型声明的对象? [英] Is there a way to convert a dynamic or anonymous object to a strongly typed, declared object?

问题描述

如果我有一个动态对象或匿名对象，其结构与强类型对象的结构完全匹配，是否有 .NET 方法从动态对象构建类型化对象?

If I have a dynamic object, or anonymous object for that matter, whose structure exactly matches that of a strongly typed object, is there a .NET method to build a typed object from the dynamic object?

我知道我可以使用 LINQ dynamicList.Select(dynamic => new Typed { .... } 类型的东西，或者我可以使用 Automapper，但我想知道是否有不是专门为此设计的吗?

I know I can use a LINQ dynamicList.Select(dynamic => new Typed { .... } type thing, or I can use Automapper, but I'm wondering if there is not something specially built for this?

推荐答案

您可以序列化为中间格式，然后立即反序列化.这不是最优雅或最有效的方式，但它可能会帮助您完成工作:

You could serialize to an intermediate format, just to deserialize it right thereafter. It's not the most elegant or efficient way, but it might get your job done:

假设这是您的课程:

// Typed definition
class C
{
    public string A;
    public int B;
}

这是你的匿名实例:

// Untyped instance
var anonymous = new {
    A = "Some text",
    B = 666
};

您可以将匿名版本序列化为中间格式，然后再次将其反序列化为类型化版本.

You can serialize the anonymous version to an intermediate format and then deserialize it again to a typed version.

var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
var json = serializer.Serialize(anonymous);
var c = serializer.Deserialize<C>(json);

请注意，理论上这对于任何序列化器/解串器都是可行的(XmlSerializer、二进制序列化、其他 json 库)，只要往返是对称的.

Note that this is in theory possible with any serializer/deserializer (XmlSerializer, binary serialization, other json libs), as long as the roundtrip is symmetric.

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