Property cannot be deserialized because the member 'properties' is not public

Question

The data contract type 'DTO.AccountData' cannot be deserialized because the member 'properties' is not public. Making the member public will fix this error. Alternatively, you can make it internal, and use the InternalsVisibleToAttribute attribute on your assembly in order to enable serialization of internal members - see documentation for more details. Be aware that doing so has certain security implications.

And in my class all member variables are public

public class AccountData
{

    public string mdn
    {
        get;
        set;
    }
    .....
    //other public varibales
    .....       

    public Dictionary<string, string> properties
    {
        get;
        set;
    }

}

Update
I tried [DataContract] and [DataMember] attribute but doesn't work.

Answer 1

Unfortunately DataContractJsonSerializer expects your json data as

  {"properties":[{"Key":"Name","Value":"Valorie"},{"Key":"Month","Value":"May"},{"Key":"Year","Value":"2013"}]}

I think using Json.NET is a good idea to parse json

For more you can check this question Parse dictionary from json windows phone