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Web service client

using System; using System.IO; using System.Net; using System.Xml.XPath; public class MainClass{   public static void Main(string [] args) {     string content = "productCode=1111";     HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://127.0.0.1:80/Query.asmx/GetNumberInStock");     request.Method = "POST";     request.ContentType = "application/x-www-form-urlencoded";     request.ContentLength = content.Length;     StreamWriter streamWriter = new StreamWriter(request.GetRequestStream( ));     streamWriter.Write(content);     streamWriter.Flush( );     WebResponse response = request.GetResponse( );     Stream stream = response.GetResponseStream( );     XPathDocument document = new XPathDocument(stream);     XPathNavigator nav = document.CreateNavigator( );     XPathNodeIterator nodes = nav.Select("//int");     Console.WriteLine(nodes.Current);   } }