JSON.net snake case notation naming strategy

Communicating with backend in JSON can be challenging.
In case of C# model which by convention should be in CamelCase notation and backend which is using snake_notation we can easily solve the problem with Json.NET.

For example, we have the next model:

public class Model
public string FooBar { get; set; }

and we want it to be serialised to: { “foo_bar”: “” }
We could use an attribute:

[JsonProperty(PropertyName = "foo_bar")]
public string FooBar { get; set; }

That will work, however, if we want to generalise this strategy we should create a JsonSerializerSettings with DefaultContactResolver which is using SnakeCaseNamingStrategy and to use it while serialisation/deserialization:

public class JsonCoverter : IJsonConverter
private static JsonSerializerSettings defaultJsonSerializerSettings =
new JsonSerializerSettings
ContractResolver = new DefaultContractResolver
NamingStrategy = new SnakeCaseNamingStrategy()

public T Deserialize(string json) =>
JsonConvert.DeserializeObject(json, defaultJsonSerializerSettings);

public string Serialize(object obj) =>
JsonConvert.SerializeObject(obj, defaultJsonSerializerSettings);


Using the JsonConverter globally will solve the different notation problem.

2 thoughts on “JSON.net snake case notation naming strategy

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