Add and remove taxonomies: Add tags

To add a new tag you will need to perform the following:

Use TaxonomyManager which is the manager class for taxonomies.
Get the Tags taxonomy object.
Create a new taxon of type FlatTaxon.
Assign the Tags taxonomy to the taxon item that you created.
Add the taxon to the Tags taxonomy.
Call the manager’s SaveChanges method to persist the changes to the database.

Use the following code sample:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Telerik.Sitefinity.Taxonomies;
using Telerik.Sitefinity.Taxonomies.Model;

namespace Telerik.Sitefinity.Documentation.CodeSnippets.DevGuide.SitefinityEssentials.Taxonomies.Tutorials
{
   public partial class TaxonomiesTutorialsSnippets
   {
       public static void AddTag(string name)
       {
           var taxonomyManager = TaxonomyManager.GetManager();

           //Get the Tags taxonomy
           var tagTaxonomy = taxonomyManager.GetTaxonomies<FlatTaxonomy>().SingleOrDefault(s => s.Name == "Tags");

           if (tagTaxonomy == null) return;

           //Create a new FlatTaxon
           var taxon = taxonomyManager.CreateTaxon<FlatTaxon>();

           //Associate the item with the flat taxonomy
           taxon.FlatTaxonomy = tagTaxonomy;

           taxon.Name = Regex.Replace(name.ToLower(), @"[^\w\-\!\$\'\(\)\=\@\d_]+", "-");
           taxon.Title = name;
           taxon.UrlName = Regex.Replace(name.ToLower(), @"[^\w\-\!\$\'\(\)\=\@\d_]+", "-");

           //Add it to the list
           tagTaxonomy.Taxa.Add(taxon);

           taxonomyManager.SaveChanges();
       }
   }
}

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