AngularJS Post data to ASP.NET WebForms

I am attempting to post some simple data to a aspx page. I am new to AngularJS and was curious to know if this is possible. below is the .JS but I cannot seem to retrieve the data in the code behind. What is the syntax to retrieve post data within a web forms page?

   $scope.TestPost = function () {
        $http({
            url: "index.aspx",
            type: "POST",
            data: { test: 'Tom' },


        }).success(function (data) { alert(data) });

    };