Search.ascx.cs

using System.Collections.Generic;
using System.Linq;
using System.Web.UI.WebControls;
using System.Xml;
using DevExpress.Web;

namespace AdaptiveSlideNavigation.UserControls {
    public partial class Search : System.Web.UI.UserControl {
        protected void SearchResults_Callback(object sender, CallbackEventArgsBase e) {
            var text = e.Parameter;
            var results = DoSearch(text);
            if(results.Count > 0) {
                BindSearchResultsNavBar(results);
                SearchResultsNavBar.Visible = true;
                noResultsContainer.Visible = false;
            } else {
                SearchResultsNavBar.Visible = false;
                requestText.InnerHtml = text;
                noResultsContainer.Visible = true;
            }
        }

        void BindSearchResultsNavBar(IList<SearchResultItem> data) {
            var group = new NavBarGroup();
            SearchResultsNavBar.Groups.Add(group);
            foreach(var item in data) {
                var navBarItem = new NavBarItem(
                    text: string.Format("<span class='title'>{0}</span> <span class='tags'>Tags: {1}</span>", item.Title, GetFromattedTags(item.Tags)),
                    name: "",
                    imageUrl: "",
                    navigateUrl: item.Url
                );
                group.Items.Add(navBarItem);
            }
        }

        string GetFromattedTags(string tags) {
            return string.Concat(tags.Split(',').Select(i => string.Format("<span class='tag'>{0}</span>", i.Trim())));
        }

        IList<SearchResultItem> DoSearch(string text) {
            var pagesNodes = XmlDataSource1.GetXmlDocument().GetElementsByTagName("page").OfType<XmlNode>();
            return pagesNodes
                .Where(n => n.Attributes["Title"].Value.ToUpper().Contains(text.ToUpper())
                    || n.Attributes["Tags"].Value.ToUpper().Contains(text.ToUpper()))
                .Select(n => new SearchResultItem() {
                    Title = n.Attributes["Title"].Value,
                    Tags = n.Attributes["Tags"].Value,
                    Url = n.Attributes["Url"].Value,
                }).ToList();
        }

        class SearchResultItem {
            public string Title { get; set; }
            public string Tags { get; set; }
            public string Url { get; set; }
        }
    }
}