entityMap|blocks|key|e96gs|text|经过进一步的研究，MVC似乎使用了JsonConverter属性来序列化JsonResult，下面的代码完成了我想要做的事情。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|6s41m|[JsonConverter(typeof(DateToString))]
public+struct+Date
{
++++private+DateTime+_date;

++++public+Date(DateTime+date)
++++{
++++++++_date+=+date;
++++}

++++public+static+implicit+operator+Date(DateTime+date)+=>+new+Date(date);

++++public+override+string+ToString()+=>+_date.ToString("yyyy-MM-dd");
}

public+class+DateToString+:+JsonConverter
{
++++public+override+bool+CanConvert(Type+objectType)+=>+objectType+==+typeof(Date);
++++public+override+bool+CanRead+=>+false;
++++public+override+object+ReadJson(JsonReader+reader,+Type+objectType,+object+existingValue,+JsonSerializer+serializer)
++++++++=>+throw+new+NotImplementedException();

++++public+override+void+WriteJson(JsonWriter+writer,+object+value,+JsonSerializer+serializer)+=>
++++++++writer.WriteValue(value.ToString());
}|code-block|syntax|javascript|7mkdi^0|H|D|10|A|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|M|9|@$A|N|B|O|C|D]|$A|P|B|Q|C|D]]|E|@]|F|$]]|$2|G|4|H|6|I|8|R|9|@]|E|@]|F|$J|K]]|$2|L|4|-4|6|7|8|S|9|@]|E|@]|F|$]]]]

After some further research it looks like MVC uses the <code>JsonConverter</code> attribute to serialize <code>JsonResult</code>s. The code below accomplished what I was trying to do.

<pre><code>[JsonConverter(typeof(DateToString))]
public struct Date
{
 private DateTime _date;

 public Date(DateTime date)
 {
 _date = date;
 }

 public static implicit operator Date(DateTime date) =&gt; new Date(date);

 public override string ToString() =&gt; _date.ToString("yyyy-MM-dd");
}

public class DateToString : JsonConverter
{
 public override bool CanConvert(Type objectType) =&gt; objectType == typeof(Date);
 public override bool CanRead =&gt; false;
 public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
 =&gt; throw new NotImplementedException();

 public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) =&gt;
 writer.WriteValue(value.ToString());
}
</code></pre>

entityMap|blocks|key|aq5ot|text|很多时候，当项目更大时，这在很多类中都是必需的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|e1kdr|我们需要转换才能以两种方式工作。应该使用ToString()方法序列化一个类，并且应该从字符串反序列化该类。我们使用以下约定。|offset|length|style|CODE|cfu5h|定义标记接口，让类显式地遵守约定，即它们支持使用ToString方法进行序列化，并且还支持从字符串到对象实例的反序列化。|cd52p|++++///+<summary>
++++///+Interface+to+convert+string+to+a+type+T
++++///+</summary>
++++public+interface+IStringToTypeConverter<out+T>
++++{
++++++++T+ConvertToType(string+stringToConvertFrom);

++++}

++++///+<summary>
++++///+Marker+Interface+to+let+Serialization/Deserialization+work+on+the+ToString+Method+of+the+class,+Rather+than
++++///+calling+on+the+Instance+properties
++++///+</summary>
++++public+interface+ITypeToStringConverter
++++{
++++}|code-block|syntax|javascript|e9po3|接下来，定义泛型转换器，它将对实现上述接口的类执行转换(序列化/反序列化)。|77ek2|++++public+class+ToStringJsonConverter+:+JsonConverter
++++{
++++++++public+override+bool+CanConvert(Type+objectType)
++++++++{

++++++++++++var+isTypeImplementStringToTypeConverter+=+objectType.GetInterfaces().Any(x+=>
++++++++++++++++x+==+typeof(ITypeToStringConverter)+%7C%7C
++++++++++++++++(x.IsGenericType+&&
++++++++++++++++x.GetGenericTypeDefinition()+==+typeof(IStringToTypeConverter<>)));

++++++++++++return+isTypeImplementStringToTypeConverter;
++++++++}

++++++++public+override+void+WriteJson(JsonWriter+writer,+object+value,+JsonSerializer+serializer)
++++++++{
++++++++++++writer.WriteValue(value.ToString());
++++++++}

++++++++public+override+bool+CanRead
++++++++{
++++++++++++get+{+return+true;+}
++++++++}

++++++++public+override+bool+CanWrite
++++++++{
++++++++++++get+{+return+true;+}
++++++++}

++++++++public+override+object+ReadJson(JsonReader+reader,+Type+objectType,+object+existingValue,+JsonSerializer+serializer)
++++++++{
++++++++++++//+Load+the+JSON+for+the+Result+into+a+JObject

++++++++++++var+stringValue+=+reader.Value.ToString();

++++++++++++if+(string.IsNullOrWhiteSpace(stringValue))
++++++++++++{
++++++++++++++++var+jObject+=+JObject.Load(reader);
++++++++++++++++stringValue+=+jObject.ToString();

++++++++++++}

++++++++++++MethodInfo+parse+=+objectType.GetMethod("ConvertToType");
++++++++++++if+(parse+!=+null)
++++++++++++{
++++++++++++++++var+destinationObject+=+Activator.CreateInstance(objectType,stringValue);
++++++++++++++++return+parse.Invoke(destinationObject,+new+object[]+{+stringValue+});
++++++++++++}

++++++++++++throw+new+JsonException($"The+{objectType.Name}+type+does+not+have+a+public+ConvertToType(string)+method.");
++++++++}
++++}|flake|最后，将Converter添加到启动类，并在JSON选项中传递它|hbb7|services.AddMvc().AddJsonOptions(options+=>
++++++++++++++++{
++++++++++++++++++++options.SerializerSettings.Converters.Add(new+ToStringJsonConverter());

++++++++++++++++})|2c0v1|注意:请测试代码的性能优势，看看它是否对您的性能SLA有任何影响。|2fnue^0|0|K|A|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|10|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|11|9|@$E|12|F|13|G|H]]|A|@]|B|$]]|$2|I|4|J|6|7|8|14|9|@]|A|@]|B|$]]|$2|K|4|L|6|M|8|15|9|@]|A|@]|B|$N|O]]|$2|P|4|Q|6|7|8|16|9|@]|A|@]|B|$]]|$2|R|4|S|6|M|8|17|9|@]|A|@]|B|$N|O]]|$2|T|4|U|6|7|8|18|9|@]|A|@]|B|$]]|$2|V|4|W|6|M|8|19|9|@]|A|@]|B|$N|O]]|$2|X|4|Y|6|7|8|1A|9|@]|A|@]|B|$]]|$2|Z|4|-4|6|7|8|1B|9|@]|A|@]|B|$]]]]

A Lot of times, this is required in a lot of Classes when the project is bigger. 

We need the conversion to work both ways. A class should be serialized using the <code>ToString()</code> method, and the class should be deserialized from the String. We use the following convention.

Define marker interfaces to let classes explicitly adhere to the contract that they support Serialization using the ToString method and also support Deserialization from string to object instance.

<pre><code> /// &lt;summary&gt;
 /// Interface to convert string to a type T
 /// &lt;/summary&gt;
 public interface IStringToTypeConverter&lt;out T&gt;
 {
 T ConvertToType(string stringToConvertFrom);

 }

 /// &lt;summary&gt;
 /// Marker Interface to let Serialization/Deserialization work on the ToString Method of the class, Rather than
 /// calling on the Instance properties
 /// &lt;/summary&gt;
 public interface ITypeToStringConverter
 {
 }
</code></pre>

Next, Define the generic converter which will do the conversion (Serialization/Deserialization) for a class which implements the above interfaces.

<pre><code> public class ToStringJsonConverter : JsonConverter
 {
 public override bool CanConvert(Type objectType)
 {

 var isTypeImplementStringToTypeConverter = objectType.GetInterfaces().Any(x =&gt;
 x == typeof(ITypeToStringConverter) ||
 (x.IsGenericType &amp;&amp;
 x.GetGenericTypeDefinition() == typeof(IStringToTypeConverter&lt;&gt;)));

 return isTypeImplementStringToTypeConverter;
 }

 public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
 {
 writer.WriteValue(value.ToString());
 }

 public override bool CanRead
 {
 get { return true; }
 }

 public override bool CanWrite
 {
 get { return true; }
 }

 public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
 {
 // Load the JSON for the Result into a JObject

 var stringValue = reader.Value.ToString();

 if (string.IsNullOrWhiteSpace(stringValue))
 {
 var jObject = JObject.Load(reader);
 stringValue = jObject.ToString();

 }

 MethodInfo parse = objectType.GetMethod("ConvertToType");
 if (parse != null)
 {
 var destinationObject = Activator.CreateInstance(objectType,stringValue);
 return parse.Invoke(destinationObject, new object[] { stringValue });
 }

 throw new JsonException($"The {objectType.Name} type does not have a public ConvertToType(string) method.");
 }
 }
</code></pre>

Lastly, Add the Converter to the startup class, passing it in the JSON Options

<pre><code>services.AddMvc().AddJsonOptions(options =&gt;
 {
 options.SerializerSettings.Converters.Add(new ToStringJsonConverter());

 })
</code></pre>

Note: Please test the performance benhmarks for your code to see if it has any impact on your performance SLA.

I have a struct that I use in my ViewModels in order to simplify the way they get automatically serialized. I want to the serialization of it to simply call the <code>.ToString()</code> method. Currently when it's serialized to JSON it gets turned into: "<code>{}</code>". Here is my Date class:

<pre><code>public struct Date
{
 private DateTime _date;

 public Date(DateTime date)
 {
 _date = date;
 }

 public static implicit operator Date(DateTime date) =&gt; new Date(date);

 public override string ToString() =&gt; _date.ToString("yyyy-MM-dd");
}
</code></pre>

I thought that there might be some sort of attribute that I can decorate the struct with or perhaps some interface that I can implement but it doesn't appear to help.

Serialize struct/class as a single string

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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 我在ViewModels中使用了一个结构，以简化自动序列化它们的方式。我希望它的序列化能够简单地调用.ToString()方法。目前，当它被序列化为JSON时，它会变成："{}“。下面是我的Date类： public struct Date{    private DateTime _date;    public ...

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