<FL:smarttaglist xmlns:FL="urn:schemas-microsoft-com:smarttags:list">
  <FL:name>WhoIs IP Lookup</FL:name>
  <FL:lcid>1033,0</FL:lcid>
  <FL:description>Lookup up a domain name</FL:description>
  <FL:moreinfourl>http://msdn.microsoft.com/msdnmag</FL:moreinfourl>
  <FL:updateable>false</FL:updateable>
  <FL:autoupdate>false</FL:autoupdate>
  <FL:lastcheckpoint>0</FL:lastcheckpoint>
  <FL:lastupdate>0</FL:lastupdate>
  <FL:updateurl></FL:updateurl>
  <FL:updatefrequency>0</FL:updatefrequency>
  <FL:smarttag type="urn:schemas-microsoft-com:office:smarttags#whois">
    <FL:caption>WhoIs IP Search</FL:caption>
      <FL:re>    
        <FL:exp>\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-
          9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b</FL:exp>
      </FL:re>
    <FL:actions>
      <FL:action id="WhoIs">
        <FL:caption>Find WhoIs for IP</FL:caption> 
        <FL:url>http://ws.arin.net/cgi-bin/whois.pl?queryinput={TEXT}
        </FL:url>
      </FL:action>
    </FL:actions>
  </FL:smarttag>
</FL:smarttaglist>

public class Recognizer : ISmartTagRecognizer2, ISmartTagRecognizer 
{
  private string[] terms;
  private int termCount;

  /// default constructor - no parameters for COM Interop
  public Recognizer(){}

  public void Recognize2(
    string Text, IF_TYPE DataType, int LocaleID, 
    ISmartTagRecognizerSite2 RecognizerSite2, string ApplicationName, 
    ISmartTagTokenList TokenList) 
  {          
    for (int i=1; i<=TokenList.Count; i++) 
    {
      // get token
      ISmartTagToken token = TokenList.get_Item(i);
 
      // match token for each term
      foreach (string term in terms) 
      {
        if (token.Text.ToLower() == term.ToLower()) 
        {
          ISmartTagProperties propertyBag  = 
            RecognizerSite2.GetNewPropertyBag();

          // commit token as recognized term
          RecognizerSite2.CommitSmartTag2(
            "urn:schemas-microsoft-com:msdnmag#mlb", 
            token.Start, token.Length, propertyBag);
        }
      }
    }
  }

  public void SmartTagInitialize(string ApplicationName)
  {
    terms = new string[] {
        "Cubs", "Cardinals", "Astros", 
        "Yankees", "Pirates", "Angels", "Sox"
    };
    termCount = terms.Length;
  }

  public string get_SmartTagName(int SmartTagID) 
  {
    return "urn:schemas-microsoft-com:msdnmag#mlb";
  }

  public string ProgId { get{ return "MlbSmartTag.Recognizer"; } }
}

public class Action : ISmartTagAction2, ISmartTagAction 
{
  public bool get_ShowSmartTagIndicator(
    int VerbID, string ApplicationName, int LocaleID) 
  {
    return true;  // show the underline indicator
  }

  public int get_VerbCount(string SmartTagName) 
  {
    if (SmartTagName == "urn:schemas-microsoft-com:msdnmag#mlb") 
      return 4;  // there are four possible actions
    else
      return 0;
  }

  public bool get_IsCaptionDynamic(
    int VerbID, string ApplicationName, int LocaleID) 
  {
    return true;  // the caption is changed based on team name
  }

  public string get_VerbCaptionFromID2(
    int VerbID, string ApplicationName, int LocaleID, 
    ISmartTagProperties Properties, string Text, 
    string Xml, object Target) 
{            
    string captionText = string.Empty;
    switch (VerbID) 
    {
      case 1:
        if (Text == "Sox")
          captionText = "MLB///Go to Red Sox website";
        else
          captionText =  String.Format("MLB///Go to {0} website", Text);
        break;
      case 2:
        if (Text == "Sox")
          captionText = "MLB///Go to White Sox website";
        break;
      case 3:
        captionText = "MLB///Show Standings";
        break;
      case 4:
        captionText = "MLB///Show Schedule";
        break;
    }
    return captionText;
  }

  public void InvokeVerb2(
    int VerbID, string ApplicationName, object Target, 
    ISmartTagProperties Properties, string Text, 
    string Xml, int LocaleID) 
{
    ProcessStartInfo startInfo = new ProcessStartInfo("iexplore.exe");
    switch (VerbID) 
    {
      case 1:
        if (Text == "Sox") 
          startInfo.Arguments = "http://www.redsox.com";
        else 
          startInfo.Arguments = String.Format("http://www.{0}.com", Text);
        break;
      case 2:
        startInfo.Arguments = "http://www.whitesox.com";
        break;
      case 3:
        startInfo.Arguments = "http://msn.foxsports.com/mlb/standings";
        break;
      case 4:
        startInfo.Arguments = "http://msn.foxsports.com/mlb/schedule";
        break;
    }
    if (startInfo.Arguments != string.Empty)
      Process.Start(startInfo);
  }

  public string get_SmartTagName(int SmartTagID) 
  {
    return "urn:schemas-microsoft-com:msdnmag#mlb";
  }
}

// registry keys
static readonly string clsId = "90D62E8D-79E3-4197-907F-BF3EC133698D";
static readonly string recognizersKey = "SOFTWARE\\Microsoft\\Office" +
  "\\Common\\Smart Tag\\Recognizers\\{" + clsId + "}";
    
// Install registry keys to make recognizer available to applications
[ComRegisterFunction]
public static void RegisterFunction(Type type) 
{
  // create registry keys for recognizer
  using(RegistryKey regHkcu =
    Registry.CurrentUser.CreateSubKey(recognizersKey))
  {
    regHkcu.SetValue(null, string.Empty);
  }
}

// Uninstall registry keys
[ComUnregisterFunction]
public static void UnregisterFunction(Type type) 
{
  Registry.CurrentUser.DeleteSubKey(recognizersKey);
}