Tree Menu Traversal in C# Queryable

Using C# to query entire tree system of pages looking for a particular attribute. Normally I would use a recursive technique, but then found this to be easier and more readable. Not sure how it is on performance, I think it’s supposed to be better. Found it here http://stackoverflow.com/questions/7062882/searching-a-tree-using-linq#answer-7063002

Here’s how I implmented

    public class MenuItem 
    {
        public virtual string NavigationTitle { get; set; }
        public virtual string Url { get; set; }
        public virtual bool ShowInMainNavigation { get; set; }
        public virtual bool ShowInFooterNavigation { get; set; }
        public virtual IEnumerable Children { get; set; }
        public virtual string TwitterHandle { get; set; }
        public virtual string FacebookHandle { get; set; }
        public virtual string InstagramHandle { get; set; }

        public IEnumerable GetDescendants(MenuItem root)
        {

            var nodes = new Stack(new[] { root });
            while (nodes.Any())
            {
                MenuItem node = nodes.Pop();
                yield return node;
                foreach (var n in node.Children) nodes.Push(n);
            }

        }
    }

public class MenuItem

{

public virtual string NavigationTitle { get; set; }

public virtual string Url { get; set; }

public virtual bool ShowInMainNavigation { get; set; }

public virtual bool ShowInFooterNavigation { get; set; }

public virtual IEnumerable Children { get; set; }

public virtual string TwitterHandle { get; set; }

public virtual string FacebookHandle { get; set; }

public virtual string InstagramHandle { get; set; }

public IEnumerable GetDescendants(MenuItem root)

{

var nodes = new Stack(new[] { root });

while (nodes.Any())

{

MenuItem node = nodes.Pop();

yield return node;

foreach (var n in node.Children) nodes.Push(n);

}

Here’s how I used in Razor:

&lt;ul&gt;
 @foreach (YourSite.Models.Common.MenuItem navItem in Model.GetDescendants(Model).Where(x =&gt; x.ShowInFooterNavigation == true))
 { 
 @Html.Partial("~/Views/Shared/NavLink.cshtml", navItem) 
 }
&lt;/ul&gt;

<ul>

@foreach (YourSite.Models.Common.MenuItem navItem in Model.GetDescendants(Model).Where(x => x.ShowInFooterNavigation == true))

{

@Html.Partial("~/Views/Shared/NavLink.cshtml", navItem)

}

</ul>