ASP.NET Core 1.0 Web API doesn't return XML

Question

How can I have my vnext API to return XML and JSON ?

I thought that using content-type with application/xml would work as it was before. Note that I tryed with Accep

Answer 1

Updated answer for ASP.NET Core 1.1:

Startup.cs:

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddMvc(config => {
        config.RespectBrowserAcceptHeader = true;
        config.InputFormatters.Add(new XmlSerializerInputFormatter());
        config.OutputFormatters.Add(new XmlSerializerOutputFormatter());
    });            
}

Csproj: