Why won't my ASP.Net Core Web API Controller return XML?

Question

I have the following simple Web API controller:

    // GET: api/customers
    [HttpGet]
    public async Task Get()
        {
        var         


        

Answer 1

For Core 2.x versions, the only thing that you need to do is to have the following code inside the ConfigureServie method of Startup.cs file.

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc()
            .AddMvcOptions(o => o.OutputFormatters.Add(
              new XmlDataContractSerializerOutputFormatter()));
}

You need to reference the Microsoft.AspNetCore.Mvc.Formatters.