JSON.NET cast error when serializing Mongo ObjectId

Question

I am playing around with MongoDB and have an object with a mongodb ObjectId on it. When I serialise this with the .NET Json() method, all is good (but the dates are horrible

Answer 1

I resolved a similar problem I was experiencing with the JSON.NET serializer/InvalidCastException error by setting the JsonOutputMode to strict, which eradicated the need to change the underlying type:

var jsonWriterSettings = new JsonWriterSettings { OutputMode = JsonOutputMode.Strict };
var json = doc.ToJson(jsonWriterSettings);

With further information available in the API: http://api.mongodb.org/csharp/1.8.3/html/d73bf108-d68c-e472-81af-36ac29ea08da.htm