@functions{

        public string TokenHeaderValue()

        {

            string cookieToken, formToken;

            AntiForgery.GetTokens(null, out cookieToken, out formToken);

            return cookieToken + ":" + formToken;               

        }

    }

    $.ajax("api/values", {

        type: "post",

        contentType: "application/json",

        data: {  }, // JSON data goes here

        dataType: "json",

        headers: {

            ‘RequestVerificationToken‘: ‘@TokenHeaderValue()‘

        }

    });