继承时Json的奇怪行为

Question

I've run into a type of issue.

I have an ErrorModel class, bare bones, that was inheriting ICollection.

public class ErrorsModel : ICollection<string>
    {
        private ICollection<string> Errors { get; set; }
        public bool HasErrors { get { return Errors != null && Errors.Any(); } }
        public string PartialView { get; set; }
}

Omitted the ICollection imp. as it is standard

When Returned by a controllers Action Json method

return Json(Errors)

The result is the private Errors object

[
  "Select a Country",
  "Select a City"
]

However when you remove the inheritance you get a complete serialization of the object.

{
"Count": 2,
  "HasErrors": true,
  "IsReadOnly": false
}

So my question is what is causing the odd serialization behavior when inheriting?

Answer 1

Your JSON serializer is treating all collection classes as arrays.

JSON does not support mixtures of arrays and objects.