CODEWITHSUNDEEP
asp.net-mvcasp.net-web-apixml-serialization
Mohsen Afshin
Mohsen Afshin

Reputation: 13436

Xml Serialization cannot write an object of type 'x'

I want to serialize a class as a response in MVC Web API using XmlFormatter but I get the following exception while creating the response:

MediaTypeFormatter formatter = Configuration.Formatters.XmlFormatter;
HttpResponseMessage resp = Request.CreateResponse<Model>(HttpStatusCode.OK, value: modelObject, formatter: formatter);

The exception:

The configured formatter 'System.Web.Http.Tracing.Tracers.XmlMediaTypeFormatterTracer' cannot write an object of type 'Model'.

What's wrong?

Upvotes: 8

Views: 3201

Answers (1)

Mohsen Afshin
Mohsen Afshin

Reputation: 13436

I digged the web for any clue of this error and found nothing after hours.

The answer was simple.

The Model class lacked a default constructor which caused a strange non-debug-able exception.

Further info: Why XML-Serializable class need a parameterless constructor

Upvotes: 14

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