VSTO smart tags let you easily create a smart tag by adding some terms to it.  For example, consider this simple smart tag in a VSTO worksheet project item.  It creates a smart tag that recognizes the term "Halibut".  One caveat about using the terms collection--VSTO uses Office's tokenizer to get words to match against terms.  The tokenizer breaks down text in the document into words.  See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/stagsdk/html/stconWhatsNew_HV01083276.asp for more information--look for "Tokenizer Feature Built Into Smart Tag Infrastructure".  This means you can't match a term like "Eric Carter" because the tokenizer will actually convert this into the tokens "Eric" and "Carter" and never give VSTO a token like "Eric Carter".  If you need to match a term that includes spaces and punctuation, use VSTO smart tag's support for regular expressions.

using System;

using System.Data;

using System.Drawing;

using System.Windows.Forms;

using Microsoft.VisualStudio.Tools.Applications.Runtime;

using Excel = Microsoft.Office.Interop.Excel;

using Office = Microsoft.Office.Core;

using Microsoft.Office.Tools.Excel;

 

namespace ExcelWorkbook5

{

    public partial class Sheet1

    {

        Action myAction;

 

        private void Sheet1_Startup(object sender, System.EventArgs e)

        {

            SmartTag mySmartTag = new SmartTag("http://smarttags.vsto.com#fish", "Fish Tag");

            mySmartTag.Terms.Add("Halibut");

            myAction = new Action("Show fishey picture...");

            mySmartTag.Actions = new Action[] { myAction };

            myAction.Click += new ActionClickEventHandler(myAction_Click);

            Globals.ThisWorkbook.VstoSmartTags.Add(mySmartTag);

        }

 

        void myAction_Click(object sender, ActionEventArgs e)

        {

            MessageBox.Show("Show a fishey picture");

        }

 

        #region VSTO Designer generated code

        private void InternalStartup()

        {

            this.Startup += new System.EventHandler(Sheet1_Startup);

        }

        #endregion

    }

}