C#

Bank.net.webservicex.www.USZip ws = new Bank.net.webservicex.www.USZip();


           XmlNode cityNode = ws.GetInfoByZIP(txtZip.Text);

           string cityName = "UNKNOWN";
           string stateName = "UNKNOWN";
           foreach (XmlNode node in cityNode)
           {
               foreach (XmlElement elem in node)
               {
                   if (elem != null && elem.Name.Equals("CITY"))
                   {
                       cityName = elem.FirstChild.InnerText;
                   }
                   if (elem != null && elem.Name.Equals("STATE"))
                   {
                       stateName = elem.FirstChild.InnerText;
                   }
               }
           }
           txtCity.Text = cityName;
           txtState.Text = stateName;

byte[] request=new byte[] {(byte)'P', 4, 54, (byte)'@'};
mySerialPort.Write(request, 0, 4);

if (serialPort1.IsOpen)<br />
           serialPort1.Close();<br />
           serialPort1.Open();<br />
           byte[] request = new byte[] { (byte)'P', 4, 40, (byte)'@' };<br />
           serialPort1.Write(request, 0, 4);<br />
           textBox1.Text = serialPort1.BytesToRead.ToString();