How do I implementation of role based menu and submenu with MVC

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C#4.0

Hi Developers,

I am creating menus and submenus using partial view and on these menus I apply roles to control access, but at the moment I'm stucked on how to add submenus on my Admin link as per my code below, I'm asking a quick help in this regard...see my code below and my Admin link should look like:
Admin
- New User
- Edit User
- Delete User

How do I go about achieving this using my code below:

enter code here

@using MvcTest.Common
@{
var menus = new[]{new { LinkText="Home",ActionName="Index",ControllerName="Home",Roles="All" },
new { LinkText="About Us",ActionName="About",ControllerName="Home",Roles="Anonymous" },
new { LinkText="Contact",ActionName="Contact",ControllerName="Home",Roles="Anonymous"},

new{LinkText="Admin",ActionName="Admin",ControllerName="Home",Roles="Administrator"},

};
}


@if (HttpContext.Current.User.Identity.IsAuthenticated == false)
{
string[] roles = MyRoleProvider.GetRolesForUser(string.Empty);
var links = from item in menus
where item.Roles.Split(new String[] { "," }, StringSplitOptions.RemoveEmptyEntries)
.Any(x => roles.Contains(x) || x == "All")
select item;
foreach (var link in links)
{
@:
<li> @Html.ActionLink(link.LinkText, link.ActionName, link.ControllerName)</li>
}
}
else
{
var links = from item in menus
where item.Roles.Split(new String[] { "," }, StringSplitOptions.RemoveEmptyEntries)
.Any(x => new String[] { "All", "Anonymous" }.Contains(x))
select item;
foreach (var link in links)
{
@:
<li>
@Html.ActionLink(link.LinkText, link.ActionName,link.ControllerName)
</li>

}
}


Kindest Regards
Lucky

What I have tried:

I did try to research as you can see my pasted code above regarding the question!