Beginning Web Development, Silverlight, and ASP.NET AJAX

CHAPTER 7 ■ .NET 3.0: WINDOWS COMMUNICATION FOUNDATION 173
CASSINI VS. IIS
When you are developing with Visual Studio, if you create your web site or service using the file system,
Visual Studio will launch the Cassini web server to allow you to test and debug your application. This
will use a random port other than port 80, such as port 49906, as in the example in the “Creating the
Address Service Client” section. When following along with the code in this section of this book (as well
as any other book where Visual Studio and Cassini are being used), understand that you are likely to
have a different port, so your URL will be http://localhost:xxxxx, where xxxxx is the port that
was randomly assigned.
When you deploy your application to a production web server running IIS, you’ll be using port 80.
Remember to update proxies or any references to the correct port.
The tool will respond with output like the following:
Microsoft (R) Service Model Metadata Tool
[Microsoft (R) Windows (R) Communication Foundation, Version 3.0.4506.30]
Copyright (c) Microsoft Corporation. All rights reserved.
Attempting to download metadata from
'http://localhost:49906/FirstWCF/Service.svcwsdl'
using WS-Metadata Exchange or DISCO.
Generating files...
C:\Program Files\Microsoft Visual Studio 8\VC\AddressService.cs
C:\Program Files\Microsoft Visual Studio 8\VC\output.config
As you can see, the files are generated in the current directory. You will add them to
your new client next.
You can use any type of application as a service client as long as you use this configuration
information. If you’re building a Windows app, you add the information to your
App.config; otherwise you add it to your Web.config. For this example, you’ll build a web
client that takes the information back from the WCF service and renders it on a DataGrid.
First, create the web application that implements the client using the File – New dialog.
You’ll have a basic web application set up containing a Default.aspx page. You’ll need
to add a Web.config file to the project. The easiest way to do this is to just run the application
in debug mode, and Visual Studio will automatically generate a Web.config file for
you.
Next, you should copy the two files AddressService.cs and output.config to the directory
that the new web site is implemented in, and add them to your project.