Automatically bind pascal case c# model from snake case JSON in WebApi

Question

I am trying to bind my PascalCased c# model from snake_cased JSON in WebApi v2 (full framework, not dot net core).

Here\'s my api:

public class MyAp         


        

Answer 1

You can add cusrom json converter code like below. This should allow you to specify property mapping.

public class ApiErrorConverter : JsonConverter
{
private readonly Dictionary     _propertyMappings = new Dictionary
{
    {"name", "error"},
    {"code", "errorCode"},
    {"description", "message"}
};

public override bool CanWrite => false;

public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
    throw new NotImplementedException();
}

public override bool CanConvert(Type objectType)
{
    return objectType.GetTypeInfo().IsClass;
}

public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
    object instance = Activator.CreateInstance(objectType);
    var props = objectType.GetTypeInfo().DeclaredProperties.ToList();

    JObject jo = JObject.Load(reader);
    foreach (JProperty jp in jo.Properties())
    {
        if (!_propertyMappings.TryGetValue(jp.Name, out var name))
            name = jp.Name;

        PropertyInfo prop = props.FirstOrDefault(pi =>
            pi.CanWrite && pi.GetCustomAttribute().PropertyName == name);

        prop?.SetValue(instance, jp.Value.ToObject(prop.PropertyType, serializer));
    }

    return instance;
    }
}

Then specify this attribute on your class.

This should work.

This blog explains the approach using console Application. https://www.jerriepelser.com/blog/deserialize-different-json-object-same-class/