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
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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:
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<ul> @foreach (YourSite.Models.Common.MenuItem navItem in Model.GetDescendants(Model).Where(x => x.ShowInFooterNavigation == true)) { @Html.Partial("~/Views/Shared/NavLink.cshtml", navItem) } </ul> |