jonathanread/GetDocsByTag.aspx

## GetDocsByTag.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GetDocsByTag.aspx.cs" Inherits="SitefinityWebApp.Sitefinity.GetDocsByTag" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
	<title></title>
</head>
<body>
	<form id="form1" runat="server">
		<div>
			<asp:TextBox runat="server" ID="TagNameTextBox"></asp:TextBox>
			<asp:Button runat="server" ID="FindDocWithTagNameBtn" Text="Search For Docs By Tag Name" />
			<asp:Repeater runat="server" ID="DocsRepeater">
				<ItemTemplate>
					<div><%# Eval("Title") %></div>
				</ItemTemplate>
			</asp:Repeater>
		</div>
	</form>
</body>
</html>

## GetDocsByTag.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Telerik.Sitefinity;
using Telerik.Sitefinity.Model;
using Telerik.Sitefinity.GenericContent.Model;
using Telerik.Sitefinity.Modules.Libraries;
using Telerik.Sitefinity.Taxonomies;
using Telerik.Sitefinity.Taxonomies.Model;
using Telerik.Sitefinity.Libraries.Model;
using Telerik.OpenAccess;

namespace SitefinityWebApp.Sitefinity
{
	public partial class GetDocsByTag : System.Web.UI.Page
	{
		TaxonomyManager taxonomyManager = TaxonomyManager.GetManager();
		LibrariesManager librariesManager = LibrariesManager.GetManager();
		public IQueryable<Document> Docs;
		protected void Page_Load(object sender, EventArgs e)
		{
			if (Page.IsPostBack)
			{
				string tagName = TagNameTextBox.Text;
				Docs = FindDocsByTagName(tagName);
				DocsRepeater.DataSource = Docs;
				DocsRepeater.DataBind();
			}
		}

		private IQueryable<Document> FindDocsByTagName(string tagName)
		{
			if (!tagName.IsNullOrWhitespace())
			{
				var taxon = GetTagByName(tagName);
				if (taxon != null)
				{
					return GetDocumentsByTag(taxon);
				}
				else
				{
					//return error
					return null;
				}
			}
			else
			{
				//return error
				return null;
			}
		}

		private Taxon GetTagByName(string tagName)
		{
			Taxon taxon = null;
			if (!tagName.IsNullOrWhitespace())
			{
				taxon = taxonomyManager.GetTaxa<FlatTaxon>().Where(t => t.Name == tagName).FirstOrDefault();
			}
			return taxon;
		}

		private IQueryable<Document> GetDocumentsByTag(Taxon taxon)
		{
			return librariesManager.GetDocuments()
				.Where(d => d.Status == ContentLifecycleStatus.Live &&
					d.Visible &&
					d.GetValue<TrackedList<Guid>>("Tags").Contains(taxon.Id));
		}
	}
}
	<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GetDocsByTag.aspx.cs" Inherits="SitefinityWebApp.Sitefinity.GetDocsByTag" %>

	<!DOCTYPE html>

	<html xmlns="http://www.w3.org/1999/xhtml">
	<head runat="server">
	<title></title>
	</head>
	<body>
	<form id="form1" runat="server">
	<div>
	<asp:TextBox runat="server" ID="TagNameTextBox"></asp:TextBox>
	<asp:Button runat="server" ID="FindDocWithTagNameBtn" Text="Search For Docs By Tag Name" />
	<asp:Repeater runat="server" ID="DocsRepeater">
	<ItemTemplate>
	<div><%# Eval("Title") %></div>
	</ItemTemplate>
	</asp:Repeater>
	</div>
	</form>
	</body>
	</html>
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Web;
	using System.Web.UI;
	using System.Web.UI.WebControls;
	using Telerik.Sitefinity;
	using Telerik.Sitefinity.Model;
	using Telerik.Sitefinity.GenericContent.Model;
	using Telerik.Sitefinity.Modules.Libraries;
	using Telerik.Sitefinity.Taxonomies;
	using Telerik.Sitefinity.Taxonomies.Model;
	using Telerik.Sitefinity.Libraries.Model;
	using Telerik.OpenAccess;

	namespace SitefinityWebApp.Sitefinity
	{
	public partial class GetDocsByTag : System.Web.UI.Page
	{
	TaxonomyManager taxonomyManager = TaxonomyManager.GetManager();
	LibrariesManager librariesManager = LibrariesManager.GetManager();
	public IQueryable<Document> Docs;
	protected void Page_Load(object sender, EventArgs e)
	{
	if (Page.IsPostBack)
	{
	string tagName = TagNameTextBox.Text;
	Docs = FindDocsByTagName(tagName);
	DocsRepeater.DataSource = Docs;
	DocsRepeater.DataBind();
	}
	}

	private IQueryable<Document> FindDocsByTagName(string tagName)
	{
	if (!tagName.IsNullOrWhitespace())
	{
	var taxon = GetTagByName(tagName);
	if (taxon != null)
	{
	return GetDocumentsByTag(taxon);
	}
	else
	{
	//return error
	return null;
	}
	}
	else
	{
	//return error
	return null;
	}
	}

	private Taxon GetTagByName(string tagName)
	{
	Taxon taxon = null;
	if (!tagName.IsNullOrWhitespace())
	{
	taxon = taxonomyManager.GetTaxa<FlatTaxon>().Where(t => t.Name == tagName).FirstOrDefault();
	}
	return taxon;
	}

	private IQueryable<Document> GetDocumentsByTag(Taxon taxon)
	{
	return librariesManager.GetDocuments()
	.Where(d => d.Status == ContentLifecycleStatus.Live &&
	d.Visible &&
	d.GetValue<TrackedList<Guid>>("Tags").Contains(taxon.Id));
	}
	}
	}