27.3 Introduction to Web Server
Web applications require a server and a client. The client requests a page from the server and the server returns the page to the client; the page is displayed inside the Internet Explorer.
To develop a web application, you must have a server. The ImageHunt requires Microsoft IIS (Internet Information Services) and the Internet Explorer. You must install IIS before you install C#.
Internet Browsers display pages written in http language, web page. The web pages are stateless, i.e. a page does not store any information about its contents from one page to the next. The equivalent to the Windows version of the ImageFinder is this: when you start the ImageFinder, you are only allowed 1 click; if you want to make another click, close the ImageFinder, restart, and then make your next click.
There are several ways to address this limitation, including the “Get” method and the “Post” method.
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The “Post” method stores cookies on the local machine. If you choose the “Post” method, you must inform your clients to accept cookies.
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The “Get” method sends state information back to the server via the web address.
Later in this chapter, you will need to choose one of the two methods.
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