[Note: This tutorial is an excerpt (Sections 22.1–22.4) of Chapter 22, Web Services, from our textbook Visual C# 2005 How to Program, 2/e. This tutorial may refer to other chapters or sections of the book that are not included here. Permission Information: Deitel, Harvey M. and Paul J., VISUAL C# 2005 HOW TO PROGRAM, 2/E, ©2005, pp.1164–1190. Electronically reproduced by permission of Pearson Education, Inc., Upper Saddle River, New Jersey.]

Deploying the HugeInteger Web Service

The Web service is already deployed because we created the HugeInteger Web service directly on our computer's local IIS server. You can choose Build Web Site from the Build menu to ensure that the Web service compiles without errors. You can also test the Web service directly from Visual Web Developer by selecting Start Without Debugging from the Debug menu. This opens a browser window that contains the ASMX page shown in Fig. 22.2. Clicking the link for a particular HugeInteger Web service method displays a Web page like the one in Fig. 22.4 that allows you to test the method. Note that you can also access the Web service's ASMX page from your computer by typing the following URL in a Web browser

      http://localhost/HugeInteger/HugeInteger.asmx

Accessing the HugeInteger Web Service's ASMX Page from Another Computer

Eventually, you will want other clients to be able to access and use your Web service. If you deploy the Web service on an IIS Web server, a client can connect to that server to access the Web service with a URL of the form

      http://host/HugeInteger/HugeInteger.asmx

where host is the hostname or IP address of the Web server. To access the Web service from another computer in your company's or school's local area network, you can replace host with the actual name of the computer on which IIS is running.

If you have the Windows XP Service Pack 2 operating system on the computer running IIS, that computer may not allow requests from other computers by default. If you wish to allow other computers to connect to your computer's Web server, perform the following steps:

1. Select Start > Control Panel to open your system's Control Panel window, then double click Windows Firewall to view the Windows Firewall settings dialog.
2. In the Windows Firewall settings dialog, click the Advanced tab, select Local Area Connection (or your network connection's name, if it is different) in the Network Connection Settings list box and click the Settings... button to display the Advanced Settings dialog.
3. In the Advanced Settings dialog, ensure that the checkbox for Web Server (HTTP) is checked to allow clients on other computers to submit requests to your computer's Web server.
4. Click OK in the Advanced Settings dialog, then click OK in the Windows Firewall settings dialog.

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