This is rather simple if you utilize our web service.

• First Register with http://mapserv.utah.gov
• Second, Follow the guide on how to use SOAP web services on mapserv.utah.gov and add a class of the geocoding web service.
• Third, create a button with two text boxes. The button will fire the method below and the textboxes will be the city and zip.

private string geoCodeAddress(string city, string zip)
    {

        string userName = "your registered username";
        try
        {
            geocode.UTSGID_GeoLocator geolocator = new geocode.UTSGID_GeoLocator();
            geocode.GeocodeResult address = geolocator.GeocodeAddress(userName, city, zip);

            ESRI.ArcGIS.ADF.Web.Geometry.Point point;

            if (address.Geocoder != "Not Found")
            {
                point = new ESRI.ArcGIS.ADF.Web.Geometry.Point(address.UTM_X, address.UTM_Y);

                    Map1.Zoom(Map1.Scale / 1500, point);
                    Map1.Refresh();           

            }
            else
            {
                //handle error
            }
        }
        catch (Exception)
        {
            //handle error
        }
    }