Getting Child Content in loop

Converting Navigation to get it dynamically from Content pages :

<ul class="nav navbar-nav">

<li class="@(@Model.Content.AncestorOrSelf(1).Id == @Model.Content.Id ? "active" : "")">

<a href="/">@Model.Content.AncestorOrSelf(1).Name</a>

</li>

@foreach (var item in Model.Content.AncestorOrSelf(1).Children())

{

<li class="@(Model.Content.Id == item.Id ? "active" : "")"><a href="@item.Url">@item.Name</a></li>

}

</ul>