如何使用DataContractJsonSerializer反序列化一本字典？ [英] How to deserialize a dictionary using DataContractJsonSerializer?

问题描述

我有以下型号：

[DataContract]
public class MessageHeader
{
    private Guid? messageId;

    public Guid MessageId
    {
        get
        {
            if (messageId == null)
                messageId = Guid.NewGuid();

            return messageId.Value;
        }
    }

    [DataMember]
    public string ObjectName { get; set; }

    [DataMember]
    public Dictionary<string, object> Parameters { get; set; } // Can't deserialize this

    [DataMember]
    public Action Action { get; set; }

    [DataMember]
    public User InitiatingUser { get; set; }
}

现在一些未知的原因， DataContractJsonSerializer无法反序列化到JSON字典（见其他详细信息部分）。
不幸的是DataContractJsonSerializer也被密封的原因，是超越我。
我需要一种方法来解决它，没有人得到线索？

Now for some unknown reason, DataContractJsonSerializer can't deserialize JSON into a dictionary (See additional details section).
Unfortunately DataContractJsonSerializer is also sealed for reasons that are beyond me.
I need a way to get around it, does anyone got a clue?

推荐答案

由于没有一本字典类的JavaScript它很难有JSON deparse为一体。什么你将要做的就是自己写一个转换器。

Since there isn't a dictionary type in javascript it's rather difficult to have JSON deparse into one. What you're going to have to do is write a converter yourself.

不过，这也是大多数自定义序列化对象真实的，所以希望这没有什么好大的惊喜。

However, that's also true on most custom serialization objects, so hopefully that comes as no big surprise.

现在它应该，但是，阅读作为一个KeyValuePair，所以你可以尝试，看看它是否至少反序列化给你。相反，你需要一个名单，其中，KeyValuePair＆LT;＆GT;＆GT;

Now it should, however, read in as a KeyValuePair so you can try that, to see if it's at least deserializing for you. Rather, you would need a List<KeyValuePair<>>

什么词典＆LT;字符串，字符串＆GT; 转换成JSON：

var dict = new Dictionary<string,string>; 
dict["Red"] = "Rosso"; 
dict["Blue"] = "Blu"; 
dict["Green"] = "Verde";

[{"Key":"Red","Value":"Rosso"},
 {"Key":"Blue","Value":"Blu"},
 {"Key":"Green","Value":"Verde"}]

同样的关联从JavaScript到JSON：

The same associative from javascript into JSON:

var a = {}; 
a["Red"] = "Rosso"; 
a["Blue"] = "Blu"; 
a["Green"] = "Verde";

{"Red":"Rosso","Blue":"Blu","Green":"Verde"}

所以这是概括地说这个问题。

So there's the problem in a nutshell.

一些后续环节的有效性

<一个href="http://my6solutions.com/post/2009/06/17/The-serialization-and-deserialization-of-the-generic-Dictionary-via-the-DataContractJsonSerializer.aspx">http://my6solutions.com/post/2009/06/17/The-serialization-and-deserialization-of-the-generic-Dictionary-via-the-DataContractJsonSerializer.aspx

<一个href="http://msdn.microsoft.com/en-us/library/system.runtime.serialization.collectiondatacontractattribute.aspx">http://msdn.microsoft.com/en-us/library/system.runtime.serialization.collectiondatacontractattribute.aspx

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