using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Serialization;

public class Program

{

    public static void Main()

    {

        var product = new Product() { ProductId = 1, Name = "MyProduct", UnitPrice = 10.00M };

        var serialised = JsonConvert.SerializeObject(product);

        Console.WriteLine(serialised);

​

        var settings = new JsonSerializerSettings() { ContractResolver = new CamelCasePropertyNamesContractResolver() };

        serialised = JsonConvert.SerializeObject(product, settings);

        Console.WriteLine(serialised);

​

        settings = new JsonSerializerSettings() { ContractResolver = new LowerCasePropertyNamesContractResolver() };

        serialised = JsonConvert.SerializeObject(product, settings);

        Console.WriteLine(serialised);

        var product2 = new Product2() { ProductId = 2, Name = "My Another Product", UnitPrice = 20.00M };

        serialised = JsonConvert.SerializeObject(product2, settings);

        Console.WriteLine(serialised);

    }

}

​

public class Product

{

    public int ProductId { get; set; }

    public string Name { get; set; }

    public decimal UnitPrice { get; set; }

}

​

public class Product2

{

    [JsonProperty(PropertyName = "Product_Id")]

    public int ProductId { get; set; }

​

    [JsonProperty(PropertyName = "Product.Name")]

    public string Name { get; set; }

​

    public decimal UnitPrice { get; set; }

}

​

public class LowerCasePropertyNamesContractResolver : DefaultContractResolver

{

    protected override string ResolvePropertyName(string propertyName)

    {

        return propertyName.ToLower();

    }

}

​