How to generate a URL for ASP.NET MVC action, including hostname and port? [duplicate]

Answer 1

Url.Action("Action", "Controller", null, Request.Url.Scheme);

How to include the following in the Form Action attribute?

1. Protocol(http:// or https://)
2. HostName
3. QueryString
4. Port

@{
    var actionURL = Url.Action("Action", "Controller", 
                               FormMethod.Post, Request.Url.Scheme)  
                    + Request.Url.PathAndQuery;
}
@using (Html.BeginForm("Action", "Controller", FormMethod.Post, 
                                                   new { @action = actionURL }))
{
}