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Creating Clients for XML Web Services 

A Web service client is any component or application that communicates with a Web service using SOAP messages, or a comparable messaging protocol. A Web service client can be a traditional client application. A client can also be another Web application. (In this situation, the Web application would consume the XML within the SOAP message, format it, and send the result back to an ultimate client — perhaps a Web browser.)

Create a Web service client by following these basic steps:

  1. Create a proxy class for the Web service.

  2. Reference the proxy class in the client code.

  3. Create an instance of the proxy class in the client code.

  4. If anonymous access has been disabled for the Web application hosting the Web service, set the Credentials property of the proxy class.

  5. Call the method on the proxy class that corresponds to the Web service method with which you want to communicate.

For most clients, these steps differ only in how the proxy class is referenced and how the Web service client is deployed.

NoteNote

If you create a Web service client using the following topics and your proxy fails with the exception text, "The request failed with HTTP status 401: Access Denied," there is a good chance that you have not yet passed your security credentials to the credential cache on the proxy. For details on passing the correct credential information to the service, see How to: Configure an XML Web Service for Windows Authentication.

In This Section

How to: Create an ASP.NET Web Form Client

Shows how to create a Web Forms application that is a client to a Web service.

How to: Create a Console Application Client

Shows how to create a console application that is a client to a Web service.

Related Sections

Building XML Web Service Clients

Details how to build a client to an XML Web service, regardless of the platform or technology used to build the XML Web service.

Communicating with XML Web Services Asynchronously

Outlines techniques and design patterns for asynchronous communication with a Web service.

How to: Access XML Web Services from a Browser

Explains how to test a Web service and specific Web service methods using a Web browser.

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