Summary

Summary

• Cookies enable you to invisibly save information about a particular user. Cookies can be used to save the information directly on the user s computer or indirectly through a unique identifier, which is then referenced to retrieve user information from a data set stored on the server.

• Use the Request object s Cookies collection to retrieve a cookie from the user. Use the Response object s Cookies collection to create or modify a cookie on the user s computer.

• Set the Cookie object s Expires property to Now to delete a cookie from the user s computer.

• Use the DllImport attribute to declare unmanaged procedures for use within .NET assemblies.

• Create a reference to a COM object in Visual Studio to automatically create an interop assembly that allows you to use the COM object within .NET code.

• To hide public .NET members from COM, use the ComVisible attribute.

• Select a .NET class library project s Register For COM Interop build check box to automatically create a type library for the project and register the assembly with the system registry.

• Client-side scripts let you control the browser window, respond immediately to non-postback events, and perform other tasks that are not possible from server-side code.

• Use the Browser object s VBScript or JavaScript properties to test whether the browser can run scripts. Use an inline test script that redirects the users to another page to test whether a user has disabled scripting through his or her browser security settings.

• Add script event procedures to a page s HTML to respond to events that occur on the client side rather than the server side.

• Use the Mailto protocol to create a message that will be sent from the user s mail system. The Mailto protocol is used as part of a hyperlink.

• Use the MailMessage and SmtpMail classes to compose and send messages from the server s mail system.

• Create a Web reference to use an XML Web service from server-side code.

• Use the WebService behavior to use an XML Web service from client-side code.