How to Override `JsonProperty` Attribute Serialization in JSON.Net?

Override the serialization behavior of JsonProperty properties in JSON.Net

When serializing JSON using Json.Net in ASP.Net MVC, you can use the [JsonProperty] attribute to customize the property name. However, in some cases you may want to ignore this property and use the original property name for serialization.

For this purpose, a custom contract parser can be used. The contract parser determines how JSON.Net serializes objects into JSON. Here's how to create a contract parser that ignores the [JsonProperty] attribute:

<code class="language-csharp">class LongNameContractResolver : DefaultContractResolver
{
    protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
    {
        // 基类创建具有简短名称的属性
        IList<JsonProperty> list = base.CreateProperties(type, memberSerialization);

        // 使用原始名称覆盖属性名称
        foreach (JsonProperty prop in list)
        {
            prop.PropertyName = prop.UnderlyingName;
        }

        return list;
    }
}</code>

To use the contract resolver, instantiate it and pass it to JsonSerializerSettings:

<code class="language-csharp">JsonSerializerSettings settings = new JsonSerializerSettings();
settings.Formatting = Formatting.Indented;
settings.ContractResolver = new LongNameContractResolver();</code>

Finally, pass these settings to JsonConvert.SerializeObject to serialize the object:

<code class="language-csharp">string json = JsonConvert.SerializeObject(obj, settings);</code>

This custom contract parser will effectively ignore the [JsonProperty] attribute and serialize the attribute using its original name, even if the JsonProperty attribute specifies a shorter name.

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