使ASP.NET WCF转换字典JSON，省略＆QUOT;关键＆QUOT; ＆安培; ＆QUOT; VALUE＆QUOT;标签 [英] Make ASP.NET WCF convert dictionary to JSON, omitting "Key" & "Value" tags

问题描述

下面是我的困境。我使用REST风格的ASP.NET服务，试图让一个函数来以这种形式返回一个JSON字符串：

Here's my dilemma. I'm using a RESTful ASP.NET service, trying to get a function to return a JSON string in this format:

{"Test1Key":"Test1Value","Test2Key":"Test2Value","Test3Key":"Test3Value"}

但我得到它以这种形式来代替：

But I'm getting it in this format instead:

[{"Key":"Test1Key","Value":"Test1Value"},
{"Key":"Test2Key","Value":"Test2Value"},
{"Key":"Test3Key","Value":"Test3Value"}]

我的方法是这样的：

My method looks like this:

[OperationContract]
[WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest, RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
public Dictionary<string, string> Test(String Token)
{
    if (!IsAuthorized(Token))
        return null;

    if (!IsSecure(HttpContext.Current))
        return null;

    Dictionary<string, string> testresults = new Dictionary<string, string>();
    testresults.Add("Test1Key", "Test1Value");
    testresults.Add("Test2Key", "Test2Value");
    testresults.Add("Test3Key", "Test3Value");
    return testresults;
}

有没有什么办法可以摆脱那些关键和价值仅使用内置的ASP.NET工具标签？ （即，我宁可不使用JSON.NET，如果是可以避免的）

Is there any way I can get rid of those "Key" and "Value" tags using only built in ASP.NET tools? (i.e., I'd rather not use JSON.NET, if it's avoidable)

非常感谢！ ：）

推荐答案

在.NET Dictionary类不会序列比你所描述的方式任何其他方式。但是，如果你创建自己的类，敷字典类，则可以覆盖串行化/反序列化的方法和能够做你想做的。见下面的例子，并注意GetObjectData使用的方法。

The .NET dictionary class won't serialize any other way than the way you described. But if you create your own class and wrap the dictionary class then you can override the serializing/deserializing methods and be able to do what you want. See example below and pay attention to the "GetObjectData" method.

    [Serializable]
    public class AjaxDictionary<TKey, TValue> : ISerializable
    {
        private Dictionary<TKey, TValue> _Dictionary;
        public AjaxDictionary()
        {
            _Dictionary = new Dictionary<TKey, TValue>();
        }
        public AjaxDictionary( SerializationInfo info, StreamingContext context )
        {
            _Dictionary = new Dictionary<TKey, TValue>();
        }
        public TValue this[TKey key]
        {
            get { return _Dictionary[key]; }
            set { _Dictionary[key] = value; }
        }
        public void Add(TKey key, TValue value)
        {
            _Dictionary.Add(key, value);
        }
        public void GetObjectData( SerializationInfo info, StreamingContext context )
        {
            foreach( TKey key in _Dictionary.Keys )
                info.AddValue( key.ToString(), _Dictionary[key] );
        }
    }

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