How do you handle differing naming conventions when serializing C# objects to JSON?

You could use JSON.net to serialize the data for you, and you can even tell it to use camelCase. This question asks something similar. Here's a code example for reference:

Product product = new Product {    ExpiryDate = new DateTime(2010, 12, 20, 18, 1, 0, DateTimeKind.Utc), Name = "Widget", Price = 9.99m, Sizes = new[] {        "Small", "Medium", "Large"    }};string json =JsonConvert.SerializeObject(    product,     Formatting.Indented,     new JsonSerializerSettings {    ContractResolver = new CamelCasePropertyNamesContractResolver()});

Don't worry about the performance of JSON.net either, as the performance of it versus native serialization is comparable (better in most cases).

If you are using the DataContractJsonSerializer, you can specify the name using the DataMemberAttribute.Name property:

[DataContract]public class User{    [DataMember(Name = "user_id")]    public int UserId { get; set; }    [DataMember(Name = "user_name")]    public string UserName { get; set; }}

will serialize to

{"user_id":123,"user_name":"John Doe"}

I just use what the server gives me.

C#

public class Person{    public string Name { get; set; }    public string Email { get; set; }}

JS:

$.ajax({   ...   success: function(data) {       var person = data;           alert(person.Name);   }});