blocks|key|233371|text|如果类可以在序列化中使用，则实际上不推荐使用自动属性语法。原因是支持字段是由编译器生成的，每次编译代码时，该字段可能会不同。即使没有对类进行任何更改(只是重新编译代码)，这也会导致不兼容问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|233372|我认为在这种情况下应用DataMember属性可以解决这个问题。但是，如果类需要在序列化中使用，我建议使用完整的属性语法。|233373|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Automatic Property syntax is actually not recommended if the class can be used in serialization. Reason being the backing field is generated by compiler which can be different each time code is compiled. This can cause incompatibility issues even if no change is made to the class (just recompiling the code).

I think applying DataMember attribute will fix the issue in this case. But I would recommend to use full property syntax, if the class needs to be used in serialization.

blocks|key|233391|text|假设你在你的MVC项目中看到了这个问题，我发现替换@Html.JsonData的用法非常简单。下面是我以前用过的一段代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|233392|<input+type="hidden"+id="Model"+value="@Html.Raw(new+System.Web.Script.Serialization.JavaScriptSerializer().Serialize(Model))"+/>|code-block|syntax|javascript|233393|不是很优雅，但在紧要关头很简单。|233394|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Assuming you see this issue inside of your MVC project, I've found that it's pretty simple to replace the use of @Html.JsonData. Here is a snippet of code that has worked for me in the past:

<pre><code>&lt;input type="hidden" id="Model" value="@Html.Raw(new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(Model))" /&gt;
</code></pre>

Not as elegant, but simple in a pinch.

blocks|key|451388|text|我将DataContractJsonSerializer与来自另一个具有Serializable属性的程序集中的类一起使用。输出包含"k__BackingField“。删除Serializable属性(在另一个程序集中)修复了此问题。不知道为什么。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|451389|entityMap^0|2|Q|10|C|2E|C|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

I was using <code>DataContractJsonSerializer</code> with a class from another assembly that had the <code>Serializable</code> attribute. The output contained "k__BackingField". Removing the <code>Serializable</code> attribute (in the other assembly) fixed this. Not sure why.

blocks|key|451421|text|从您的类中删除[Serializable]|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|451422|entityMap^0|7|E|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Remove <code>[Serializable]</code> from your class

blocks|key|233489|text|朋友们，不要像这样声明属性：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|233490|public+String+DiscretionCode+{+get;+set;+}
public+String+DiscretionDescription+{+get;+set;+}|code-block|syntax|javascript|233491|但是，创建辅助变量，就像旧的.|233492|private+String+discretionCode;

public+String+DiscretionCode+
{+
++++get+{+return+discretionCode;}
++++set+{+discretionCode+=+value;+}
}|233493|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Friends, don't declare properties like this:

<pre><code>public String DiscretionCode { get; set; }
public String DiscretionDescription { get; set; }
</code></pre>

But, create auxiliar vars, like old....

<pre><code>private String discretionCode;

public String DiscretionCode 
{ 
 get { return discretionCode;}
 set { discretionCode = value; }
}
</code></pre>

blocks|key|451514|text|默认WebApi序列化程序会将"__BackingField:“语法添加到c#自动属性中。将此代码添加到App_Start中的WebConfig中，以获得您可能正在寻找的外观更整洁的json。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|451515|using+Newtonsoft.Json;
...

config.Formatters.JsonFormatter.SerializerSettings+=+new+JsonSerializerSettings();|code-block|syntax|javascript|451516|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The default WebApi serializer will add that "__BackingField:" syntax to c# auto-properties. Add this to your WebConfig in App_Start to get the cleaner looking json that you might be looking for.

<pre><code>using Newtonsoft.Json;
...

config.Formatters.JsonFormatter.SerializerSettings = new JsonSerializerSettings();
</code></pre>

blocks|key|233613|text|我们有一些被标记为[Serializable]的对象，因此它们可以使用传统方法序列化，但我们需要在JSON中干净地序列化这些对象，以便与Web+API一起使用。将IgnoreSerializableAttribute设置为true将阻止Newtonsoft.Json的行为像微软的序列化程序一样，而只是序列化公共属性。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|233614|TLDR:将此代码添加到WebApiConfig.cs：|233615|((Newtonsoft.Json.Serialization.DefaultContractResolver)config.Formatters.JsonFormatter.SerializerSettings.ContractResolver).IgnoreSerializableAttribute+=+true;|code-block|syntax|javascript|233616|主持人:请删除重复的问题，而不是删除一个被问了几次的问题的真正好的答案。这是一个有效问题的有效答案。|233617|entityMap^0|9|E|29|R|33|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

We have some objects which are marked as <code>[Serializable]</code> so they can be serialised using traditional methods, but which we need to have cleanly serialised in JSON for use with Web API. Setting <code>IgnoreSerializableAttribute</code> to <code>true</code> will stop Newtonsoft.Json from behaving like Microsoft's serialisers and instead it will just serialise the public properties.

TLDR: Add this to WebApiConfig.cs:

<pre><code>((Newtonsoft.Json.Serialization.DefaultContractResolver)config.Formatters.JsonFormatter.SerializerSettings.ContractResolver).IgnoreSerializableAttribute = true;
</code></pre>

Moderator: Rather than deleting a really good answer to a question that has been asked several times, please delete the duplicate question. This is a valid answer to a valid question.

blocks|key|451594|text|在JSON.NET的情况下，另一种解决方案可能会有所帮助，用Newtonsoft.Json.JsonObject属性标记类可能就足够了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|451595|我正在使用从xsd构建的cs类，并使用分部类添加一些属性。在json序列化之后，这些属性被标记为k_BackingField。其他答案中提到的JsonFormatter设置也有帮助，但更简单的方法是使用JsonObject属性标记分部类。|451596|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Another solution that may help in case of JSON.NET. It may be enough to mark class with [Newtonsoft.Json.JsonObject] attribute.

I was working with cs classes built from xsd and was adding some properties using partial classes. After json serialization these properties were marked with k_BackingField. JsonFormatter settings mentioned in other answers helped as well, but more simple was to mark partial class with [JsonObject] attribute.

blocks|key|233688|text|当我的类中有自我引用属性时，我遇到了这个问题；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|233689|class+Person+{
+List<Person>+Friends+{+get;+set;}
}|code-block|syntax|javascript|233690|结果，这个人成了他自己的朋友。我只是确保我的结果集中没有自引用对象。希望这能有所帮助。|233691|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had this issue when I have self reference properties in my class such as;

<pre><code>class Person {
 List&lt;Person&gt; Friends { get; set;}
}
</code></pre>

And there was a result, the person was friend with himself. I just made sure there was no self referencing objects in my result set. Hope this helps.

blocks|key|233698|text|我必须使用Serializable属性，所以不能删除它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|233699|XmlSerializer+ignores+[XmlAttribute]+in+WebApi|offset|length|233700|上面的解决方案为我解决了这个问题。|233701|GlobalConfiguration.Configuration.Formatters.XmlFormatter.UseXmlSerializer+=+true;|code-block|syntax|javascript|233702|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/35846873/xmlserializer-ignores-xmlattribute-in-webapi^0|0|0|1A|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

I had to use the [Serializable] attributes, so removing it was not an option.

<a href="https://stackoverflow.com/questions/35846873/xmlserializer-ignores-xmlattribute-in-webapi">XmlSerializer ignores [XmlAttribute] in WebApi</a>

The above resolution solved it for me.

<pre><code>GlobalConfiguration.Configuration.Formatters.XmlFormatter.UseXmlSerializer = true;
</code></pre>

blocks|key|233706|text|在我的情况下，此错误是针对Newtonsoft.Json版本的，服务器查找的是6.0.0版本，而我使用的是11.0版本，因此我必须安装版本6.0.0|type|unstyled|depth|inlineStyleRanges|entityRanges|data|233707|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

in my case this error was for the Newtonsoft.Json Version, the server looked for 6.0.0 version and I had the 11.0, so I had to install the version 6.0.0

I am getting the k_BackingField in my returned json after serializing a xml file to a .net c# object.

I've added the DataContract and the DataMember attribute to the .net c# object but then I get nothing on the json, client end.

<pre><code>[XmlRoot("person")]
[Serializable]
public class LinkedIn
{
 [XmlElement("id")]
 public string ID { get; set; }

 [XmlElement("industry")]
 public string Industry { get; set; }

 [XmlElement("first-name")]
 public string FirstName { get; set; }

 [XmlElement("last-name")]
 public string LastName { get; set; }
 [XmlElement("headline")]
}
</code></pre>

Example of the returned json:

<pre class="lang-none prettyprint-override"><code>home: Object
&lt;FirstName&gt;k__BackingField: "Storefront"
&lt;LastName&gt;k__BackingField: "Doors"
</code></pre>

How to remove k__BackingField from json when Deserialize

服务器

编译器

JSON

在将xml文件序列化为.net c#对象后，我将在返回的json中获取k_BackingField。我已经向.net c#对象添加了DataContract和DataMember属性，但是在json客户端上什么也得不到。[XmlRoot("person")][Serializable]public class Link...

问如何在反序列化时从json中移除k__BackingField
EN

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