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ASP.NET inherited the built-in objects from ASP. These objects are global in the sense that you don't need to construct them or pass them around; they are always there. There are five built-in objects:
Request: Passes information from the user
Response: Passes information to the user
Server: Controls the IIS Web server
Session: Stores and changes information about the user's current Web server session
Application:Stores information about the current application. Persistent during the lifetime of the application
The Request and Response objects include collections as their properties. These are the Request object's collections:
ClientCertificate: the certificate field issued by the browser. The field names are specified in the x.509 standard
QueryString: a free text field
Form: the data in an HTML form
Cookies: the value of an application-defined cookie
ServerVariables: information about the server, such as the server name
IBuySpy uses the Cookies collection above. When the initial default page (Default.aspx) loads, we check if there is a personalization cookie around, and assemble a personalized Welcome message if there is such a cookie. This is the role of Page_Load():
function Page_Load(sender: Object , e: EventArgs) : void {
if (Request.Cookies["IBuySpy_FullName"] != null) {
WelcomeMsg.Text = "Welcome " + Request.Cookies["IBuySpy_FullName"].Value;
}
}
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