blocks|key|446628|text|如果使用.Net+Core3.0或更高版本；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|446629|默认使用内置的System.Text.Json解析器实现。|offset|length|style|CODE|446630|例如：|446631|using+System.Text.Json;

var+json+=+JsonSerializer.Serialize(aList);|code-block|syntax|javascript|446632|或者，也可以使用其他不太主流的选项，如Utf8Json解析器和Jil：如果您确实需要superior+performance，可以使用这些选项，但是，您需要安装它们各自的包。|446633|如果使用.Net+Core2.2或更早版本卡住了；|446634|默认使用Newtonsoft+JSON.Net作为您的首选JSON解析器。|446635|446636|using+Newtonsoft.Json;

var+json+=+JsonConvert.SerializeObject(aList);|446637|您可能需要先安装该软件包。|446638|PM>+Install-Package+Newtonsoft.Json|446639|有关更多详细信息，请访问see+and+upvote+the+answer+that+is+the+source+of+this+information。|446640|仅供参考，这是许多年前的原始答案；|446641|//+you+need+to+reference+System.Web.Extensions

using+System.Web.Script.Serialization;

var+jsonSerialiser+=+new+JavaScriptSerializer();
var+json+=+jsonSerialiser.Serialize(aList);|446642|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/neuecc/Utf8Json|1|https://github.com/kevin-montrose/Jil|2|https://michaelscodingspot.com/the-battle-of-c-to-json-serializers-in-net-core-3/|3|https://stackoverflow.com/a/15239542/659190^0|0|7|G|0|0|0|J|8|0|V|3|1|16|K|2|0|0|0|0|0|0|0|C|1S|3|0|0|0^^$0|@$1|2|3|4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1M|8|@$D|1N|E|1O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1P|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|1Q|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|1R|8|@]|9|@$D|1S|E|1T|1|1U]|$D|1V|E|1W|1|1X]|$D|1Y|E|1Z|1|20]]|A|$]]|$1|Q|3|R|5|6|7|21|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|22|8|@]|9|@]|A|$]]|$1|U|3|I|5|6|7|23|8|@]|9|@]|A|$]]|$1|V|3|W|5|L|7|24|8|@]|9|@]|A|$M|N]]|$1|X|3|Y|5|6|7|25|8|@]|9|@]|A|$]]|$1|Z|3|10|5|L|7|26|8|@]|9|@]|A|$M|N]]|$1|11|3|12|5|6|7|27|8|@]|9|@$D|28|E|29|1|2A]]|A|$]]|$1|13|3|14|5|6|7|2B|8|@]|9|@]|A|$]]|$1|15|3|16|5|L|7|2C|8|@]|9|@]|A|$M|N]]|$1|17|3|-4|5|6|7|2D|8|@]|9|@]|A|$]]]|18|$19|$5|1A|1B|1C|A|$1D|1E]]|1F|$5|1A|1B|1C|A|$1D|1G]]|1H|$5|1A|1B|1C|A|$1D|1I]]|1J|$5|1A|1B|1C|A|$1D|1K]]]]

<h2>If using .Net Core 3.0 or later;</h2>

<p>Default to using the built in <code>System.Text.Json</code> parser implementation.</p>

<p>e.g.</p>

<pre><code>using System.Text.Json;

var json = JsonSerializer.Serialize(aList);
</code></pre>

<p>alternatively, other, less mainstream options are available like <a href="https://github.com/neuecc/Utf8Json" rel="noreferrer">Utf8Json</a> parser and <a href="https://github.com/kevin-montrose/Jil" rel="noreferrer">Jil</a>: These may offer <a href="https://michaelscodingspot.com/the-battle-of-c-to-json-serializers-in-net-core-3/" rel="noreferrer">superior performance</a>, if you really need it but, you will need to install their respective packages.</p>

<h2>If stuck using .Net Core 2.2 or earlier;</h2>

<p>Default to using Newtonsoft JSON.Net as your first choice JSON Parser.</p>

<p>e.g.</p>

<pre><code>using Newtonsoft.Json;

var json = JsonConvert.SerializeObject(aList);
</code></pre>

<p>you may need to install the package first.</p>

<pre><code>PM&gt; Install-Package Newtonsoft.Json
</code></pre>

<p>For more details <a href="https://stackoverflow.com/a/15239542/659190">see and upvote the answer that is the source of this information</a>.</p>

<h2>For reference only, this was the original answer, many years ago;</h2>

<pre><code>// you need to reference System.Web.Extensions

using System.Web.Script.Serialization;

var jsonSerialiser = new JavaScriptSerializer();
var json = jsonSerialiser.Serialize(aList);
</code></pre>


blocks|key|661235|text|public+static+string+JSONSerialize<T>(T+obj)
++++++++{
++++++++++++string+retVal+=+String.Empty;
++++++++++++using+(MemoryStream+ms+=+new+MemoryStream())
++++++++++++{
++++++++++++++++DataContractJsonSerializer+serializer+=+new+DataContractJsonSerializer(obj.GetType());
++++++++++++++++serializer.WriteObject(ms,+obj);
++++++++++++++++var+byteArray+=+ms.ToArray();
++++++++++++++++retVal+=+Encoding.UTF8.GetString(byteArray,+0,+byteArray.Length);
++++++++++++}
++++++++++++return+retVal;
++++++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|661236|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>public static string JSONSerialize&lt;T&gt;(T obj)
        {
            string retVal = String.Empty;
            using (MemoryStream ms = new MemoryStream())
            {
                DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
                serializer.WriteObject(ms, obj);
                var byteArray = ms.ToArray();
                retVal = Encoding.UTF8.GetString(byteArray, 0, byteArray.Length);
            }
            return retVal;
        }
</code></pre>


blocks|key|661294|text|基于另一个帖子的答案..我想出了一种更通用的方法来构建列表，它利用Json.NET版本12.x的动态检索|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661295|using+Newtonsoft.Json;

static+class+JsonObj
{
++++///+<summary>
++++///+Deserializes+a+json+file+into+an+object+list
++++///+Author:+Joseph+Poirier+2/26/2019
++++///+</summary>
++++///+<typeparam+name="T"></typeparam>
++++///+<param+name="fileName"></param>
++++///+<returns></returns>
++++public+static+List<T>+DeSerializeObject<T>(string+fileName)
++++{
++++++++List<T>+objectOut+=+new+List<T>();

++++++++if+(string.IsNullOrEmpty(fileName))+{+return+objectOut;+}

++++++++try
++++++++{
++++++++++++//+reading+in+full+file+as+text
++++++++++++string+ss+=+File.ReadAllText(fileName);

++++++++++++//+went+with+<dynamic>+over+<T>+or+<List<T>>+to+avoid+error..
++++++++++++//++unexpected+character+at+line+1+column+2
++++++++++++var+output+=+JsonConvert.DeserializeObject<dynamic>(ss);

++++++++++++foreach+(var+Record+in+output)
++++++++++++{
++++++++++++++++foreach+(T+data+in+Record)
++++++++++++++++{
++++++++++++++++++++objectOut.Add(data);
++++++++++++++++}
++++++++++++}
++++++++}
++++++++catch+(Exception+ex)
++++++++{
++++++++++++//Log+exception+here
++++++++++++Console.Write(ex.Message);
++++++++}

++++++++return+objectOut;
++++}
}|code-block|syntax|javascript|661296|对进程的调用|661297|{
++++++++string+fname+=+"../../Names.json";+//+<-+your+json+file+path

++++++++//+for+alternate+types+replace+string+with+custom+class+below
++++++++List<string>+jsonFile+=+JsonObj.DeSerializeObject<string>(fname);
}|661298|或者这个进程调用|661299|{
++++++++string+fname+=+"../../Names.json";+//+<-+your+json+file+path

++++++++//+for+alternate+types+replace+string+with+custom+class+below
++++++++List<string>+jsonFile+=+new+List<string>();
++++++++jsonFile.AddRange(JsonObj.DeSerializeObject<string>(fname));
}|661300|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

<p>building on an answer from another posting.. I've come up with a more generic way to build out a list, utilizing dynamic retrieval with Json.NET version 12.x</p>

<pre><code>using Newtonsoft.Json;

static class JsonObj
{
    /// &lt;summary&gt;
    /// Deserializes a json file into an object list
    /// Author: Joseph Poirier 2/26/2019
    /// &lt;/summary&gt;
    /// &lt;typeparam name="T"&gt;&lt;/typeparam&gt;
    /// &lt;param name="fileName"&gt;&lt;/param&gt;
    /// &lt;returns&gt;&lt;/returns&gt;
    public static List&lt;T&gt; DeSerializeObject&lt;T&gt;(string fileName)
    {
        List&lt;T&gt; objectOut = new List&lt;T&gt;();

        if (string.IsNullOrEmpty(fileName)) { return objectOut; }

        try
        {
            // reading in full file as text
            string ss = File.ReadAllText(fileName);

            // went with &lt;dynamic&gt; over &lt;T&gt; or &lt;List&lt;T&gt;&gt; to avoid error..
            //  unexpected character at line 1 column 2
            var output = JsonConvert.DeserializeObject&lt;dynamic&gt;(ss);

            foreach (var Record in output)
            {
                foreach (T data in Record)
                {
                    objectOut.Add(data);
                }
            }
        }
        catch (Exception ex)
        {
            //Log exception here
            Console.Write(ex.Message);
        }

        return objectOut;
    }
}
</code></pre>

<p>call to process</p>

<pre><code>{
        string fname = "../../Names.json"; // &lt;- your json file path

        // for alternate types replace string with custom class below
        List&lt;string&gt; jsonFile = JsonObj.DeSerializeObject&lt;string&gt;(fname);
}
</code></pre>

<p>or this call to process</p>

<pre><code>{
        string fname = "../../Names.json"; // &lt;- your json file path

        // for alternate types replace string with custom class below
        List&lt;string&gt; jsonFile = new List&lt;string&gt;();
        jsonFile.AddRange(JsonObj.DeSerializeObject&lt;string&gt;(fname));
}
</code></pre>


blocks|key|661398|text|如果您在Json核心API操作的上下文中执行此操作，则会隐式完成到asp.Net的转换。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661399|[HttpGet]
public+ActionResult+Get()
{
++++return+Ok(TheList);
}|code-block|syntax|javascript|661400|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|$]]

<p>If you're doing this in the context of a asp.Net Core API action, the conversion to Json is done implicitly.</p>
<pre><code>[HttpGet]
public ActionResult Get()
{
    return Ok(TheList);
}
</code></pre>


blocks|key|447105|text|using+System;
++using+System.Text.Json;+++
++using+System.Collections.Generic;

++++public+class+Program
++++{
++++++++public+static+void+Main()
++++++++{
++++++++++++
++++++++++++List<ErrorDetail>++aList+=+new+List<ErrorDetail>();
++++++++++++ErrorDetail+a+=+new++ErrorDetail{+ColumnName="aaa",+ErrorText="abbbb"};
++++++++++++ErrorDetail+c+=+new++ErrorDetail{+ColumnName="ccc",+ErrorText="cccc"};
++++++++++++ErrorDetail+b+=+new++ErrorDetail{+ColumnName="ccc",+ErrorText="cccc"};
++++++++++++aList.Add(a);
++++++++++++aList.Add(b);
++++++++++++aList.Add(c);
++++++++++++
++++++++++++var+json+=+JsonSerializer.Serialize(aList);
++++++++++++
++++++++++++Console.WriteLine(json);
++++++++}
++++++++
++++++++public+class+ErrorDetail
++++++++{
+++++++++++
++++++++++++public+string+ColumnName+{+get;+set;+}
++++
+++++++++++
++++++++++++public+string+ErrorText+{+get;+set;+}
++++
++++
++++
++++
++++++++}
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|447106|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>using System;
  using System.Text.Json;   
  using System.Collections.Generic;

    public class Program
    {
        public static void Main()
        {
            
            List&lt;ErrorDetail&gt;  aList = new List&lt;ErrorDetail&gt;();
            ErrorDetail a = new  ErrorDetail{ ColumnName=&quot;aaa&quot;, ErrorText=&quot;abbbb&quot;};
            ErrorDetail c = new  ErrorDetail{ ColumnName=&quot;ccc&quot;, ErrorText=&quot;cccc&quot;};
            ErrorDetail b = new  ErrorDetail{ ColumnName=&quot;ccc&quot;, ErrorText=&quot;cccc&quot;};
            aList.Add(a);
            aList.Add(b);
            aList.Add(c);
            
            var json = JsonSerializer.Serialize(aList);
            
            Console.WriteLine(json);
        }
        
        public class ErrorDetail
        {
           
            public string ColumnName { get; set; }
    
           
            public string ErrorText { get; set; }
    
    
    
    
        }
    }
</code></pre>


<p>I have an object model that looks like this:</p>
<pre><code>public MyObjectInJson
{
   public long ObjectID {get;set;}
   public string ObjectInJson {get;set;}
}
</code></pre>
<p>The property <code>ObjectInJson</code> is an already serialized version an object that contains nested lists. For the moment, I'm serializing the list of <code>MyObjectInJson</code> manually like this:</p>
<pre><code>StringBuilder TheListBuilder = new StringBuilder();

TheListBuilder.Append(&quot;[&quot;);
int TheCounter = 0;

foreach (MyObjectInJson TheObject in TheList)
{
  TheCounter++;
  TheListBuilder.Append(TheObject.ObjectInJson);

  if (TheCounter != TheList.Count())
  {
    TheListBuilder.Append(&quot;,&quot;);
  }
}
TheListBuilder.Append(&quot;]&quot;);

return TheListBuilder.ToString();
</code></pre>
<p>I wonder if I can replace this sort of dangerous code with <code>JavascriptSerializer</code> and get the same results.
How would I do this?</p>


Serializing a list to JSON

JSON

我有一个对象模型，看起来像这样：public MyObjectInJson{   public long ObjectID {get;set;}   public string ObjectInJson {get;set;}}属性ObjectInJson是一个已经序列化的版本，一个包含嵌套列表的对象。目前，我手动序列化...

问将列表序列化为JSON
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