List Child pages from site root (1st level)

gistfile1.cs

@inherits PartialViewMacroPage
@using Umbraco.Cms.Web
@using Umbraco.Cms.Web.Macros
@using Umbraco.Framework


@{
    //declare variables
    var rootNode = DynamicModel.AncestorsOrSelf.Last();
}


@if(rootNode.Children.Any())
{
  <ul>
  @foreach(var childPage in rootNode.Children)
     {
          <li>
              <a href="@childPage.Url">@childPage.Name</a>
          </li>
      }
</ul>
}