ASP.NET MVC 3 -如何从数据库填充单选按钮列表

在Asp.net MVC 3中，我有我的单选按钮设置如下:

<div class="editor-label">
            @Html.LabelFor(m => m.Roles)
        </div>
        <div class="editor-field">
           @Html.RadioButtonFor(model => model.Roles,false) SuperAdmin  
           @Html.RadioButtonFor(model => model.Roles,false) Admin
            @Html.ValidationMessageFor(model =>model.Roles)<br/> 
        </div>

这工作得很好，但这需要我硬编码值。现在我只有两个值，但它可以根据我的数据库中的数据改变。如何从数据库动态填充这个单选按钮列表?由于

---

我有一个Register ActionResult方法在我的控制器像这样:

public ActionResult Register()
        {
            // On load, query AdminRoles table and load all admin roles into the collection based on the
            // the query which just does an order by
            AdminRolesQuery arq = new AdminRolesQuery();
            AdminRolesCollection myAdminRolesColl = new AdminRolesCollection();
            arq.OrderBy(arq.RoleName, EntitySpaces.DynamicQuery.esOrderByDirection.Ascending);
            myAdminRolesColl.Load(arq);
            // Store The list of AdminRoles in the ViewBag
            //ViewBag.RadioAdminRoles = myAdminRolesColl.Select(r => r.RoleName).ToList();
            ViewData.Model = myAdminRolesColl.Select(r => r.RoleName).ToList();
            return View();
        }

所以ViewData。模型有一个AdminRoles列表。那么我该如何在模型中访问这个列表呢?

ViewBag.RadioButtonValues = db.Roles.Select(r => r.RoleDescription).ToList();

@{
    List<String> rbValues = (List<String>)ViewBag.RadioButtonValues;
}
<div class="editor-field">        
   @foreach (String val in rbValues) {
        @Html.RadioButtonFor(model => model.Roles,false) @val
   }
   @Html.ValidationMessageFor(model =>model.Roles)<br/> 
</div>