I'm building a web service, and it uses an external web services (example http://www.webservicex.com/stockquote.asmx?WSDL) , how do I consume the external web service inside the web service im building?
Add a Service Reference to the external Web Service inside your Web Service Project.
Right-Click on the project and "Add Web Reference". Point to the location (url) the service is hosted.
Just add a web reference in your calling service by right clicking the project and adding a web reference to the service you wish to consume.
You can keep chaining services like this for instance Service A -> B -> C
As others have stated, add a web reference to your project.
This will give you a namespace that you can use in your project. Here is a snippet from one of my Utility classes.
using System;
//...there's more
using System.Text;
using WSDebug.patweb; //web reference to WSDL
namespace WSDebug
{
class Utils
{
private static R12_WebService ws = new R12_WebService();
patweb is the name of my web reference. The web reference itself contains many classes. The R12_WebService class is the one that contains the web service methods outlined in the WSDL. The other classes and delegates are all eventargs and eventhandlers for our asynchronous methods.