CODEWITHSUNDEEP
interfaceinversion-of-controlasp.net-web-apixml-formatting
user437899
user437899

Reputation: 9269

web api XmlMediaTypeFormatter exception

I want to use IoC / the dependency resolver of the web api framework for decoupling.

The XmlFormatter cant serialize interfaces,... Ok. But what would be the purpose of IoC and the DependencyResolver if I cant return xml?

I cant even do this: (Method in my ApiController)

public HttpResponseMessage Get()
        {
            IEnumerable<Project> projects = new List<IProject>() { new Project(), new Project() }.Select(p => p as Project);

            HttpResponseMessage response = Request.CreateResponse<IEnumerable<Project>>(HttpStatusCode.OK, projects);

            return response;
        }

I create a list of IProjects and cast them to 'Project'. But while creating the response I get this:

The configured formatter 'System.Web.Http.Tracing.Tracers.XmlMediaTypeFormatterTracer' cannot write an object of type 'WhereSelectListIterator`2'.

That is a XmlMediaTypeFormatterTracer? I dont want tracing that throws errors while serialization. (BTW: I replaced the standard XMLformatter with my own one. However "XmlMediaTypeFormatterTracer" throws the exception... Info: I get the same error while using the standard formatter)

Why is this XmlMediaTypeFormatterTracer called even if I implement my own xmlformatter?

Upvotes: 0

Views: 2670

Answers (2)

gelistirici
gelistirici

Reputation: 428

my problem solved with

config.Formatters.XmlFormatter.UseXmlSerializer = false;

Upvotes: 4

Kiran
Kiran

Reputation: 57989

Have you enabled Tracing in your application? If yes, the Tracing logic wraps formatters into its a wrapper tracer formatters.

Upvotes: 0

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