var list=db.users.ToList();
return View(list);

@model IEnumerable<myMVC.Models.User>
@foreach(var item in Model)
{
 @item.Name
}

public class IndexMoel
{
   public List<UserGroup> UserGroup{get;set;}
   public List<User> User{get;set;}
……
}

var list=new IndexModel();
list.UserGroup=db.UserGroups.ToList();
list.User=db.User.ToList();
return View(list);

@model myMvc.IndexModel
@foreach(var g in Model.UseGroup)
{
  @g.GroupName
}



@foreach(var u in Model.User)
{
  @u.UserName
}