Access-Request-Headers in angularjs and c #

In the angularjs part I have this part of the code to show the request-headers from the web:

 $http.defaults.headers.common["User"] = "MjM=";
 $http.defaults.headers.common["Password"] = "MjM=";
  $http({
    method: "GET",
    url: "http://localhost/route/",

    setRequestHeader: {
        "User": $http.defaults.headers.common.User,
        "Password": $http.defaults.headers.common.Password
    }
  });

I am using the verison 1.5.0 of angularjs. Apparently from angularjs I think that everything works correctly since chrome visualize ls request-headers that we are creating here:

Then, when we go to our code in c #, we put the corresponding configuration:

[Route("Token")]        
    [HttpGet, HttpOptions, HttpPost, HttpPut, HttpDelete]
    [AcceptVerbs("OPTIONS")]
    [EnableCors(origins: "http://localhost:61291",headers:"user, password", methods:"*")]

And after that the function in which I collect the values of the headers, and here is where the problem is:

var Datos = Request.Headers;
var token = Datos.GetValues("User");
var token = Datos.GetValues("Password");

Then I do an if to control possible failures, but the problem is that the function GetValues of header in question, always returns NULL.