ASP.NET MVC 3 - File upload through AngularJS

I'm using AngularJS with my pages, and I have a doubt: when I do post with my form, how can I pass some selected file to my ASP.NET MVC 3 Controller? Check this out:

My form:

<form enctype="multipart/form-data" ng-controller="FilesController" ng-submit="submitingForm()">
    <div>
        Choose the file:
        <input type="file" onchange="angular.element(this).scope().setSelectedFile(this)" />
    </div>

    <input type="submit" value="Confirm" />
</form>

And the AngularJS Controller:

var module = angular.module('application', []);

(function (ang, app) {

    function FilesController($scope, $http) {

        $scope.setSelectedFile = function (element) {
            $scope.$apply(function($scope) {
                $scope.selectedFile = element.files[0];
            });
        };

        $scope.submitingForm = function() {

            $http.post(url, ???????).success(function() {
                // How to pass that selected file for my ASP.NET controller?
            });
        }
    }

    app.controller("FilesController", FilesController);
})(angular, module);

Thank you!!!