Tip: C# Automatic Properties, k_BackingField and JSON

If you are using automatic properties to define your data objects and you are trying to serialize these objects to a JSON string using DataContractSerializer (WCF/3.5), make sure you mark your data classes with [DataContract] and [DataMember] attributes (even if you are not really using WCF), a simple [Serializable] attribute will not do. If you just use [Serializable], the emitted JSON string will have a prefix tag “k_backingField” and the string is all mumbo-jumbo!

So if you use automatic properties, your class should look like this 🙂

    public class Employee
        [DataMember(Name = "FirstName", Order = 1)]
        public string FirstName { get; set; }
        [DataMember(Name = "LastName", Order = 2)]
        public string LastName { get; set; }


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