What is ASP?

What is ASP?

Active Server Pages (ASP), also known as Classic ASP, is a Microsoft's server-side technology, which helps in creating dynamic and user-friendly Web pages. It uses different scripting languages to create dynamic Web pages, which can be run on any type of browser. 

The Web pages are built by using either VBScript or JavaScript and these Web pages have access to the same services as Windows application, including ADO (ActiveX Data Objects) for database access, SMTP (Simple Mail Transfer Protocol) for e-mail, and the entire COM (Component Object Model) structure used in the Windows environment. ASP is implemented through a dynamic-link library (asp.dll) that is called by the IIS server when a Web page is requested from the server.

Directives for Asp.Net Web Pages

Directives
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Directives are used to specify the settings used by the page or usercontrol compilers to process pages or usercontrol files

There are 11 types of directives

1.@Page: This is used to define page specific attributes. It is used only in .aspx files

2.@Control: This is used to define Control specific attributes. It is used only in .ascx files

3.@Master: This is used to define masterpage specific attribute. It is used only in .master files

4.@Import: This is used to import a namespace in to the current page or usercontrol

5.@Register: This is used to render usercontrols and custom server controls in to a current page or usercontrol

6.@Assembly:: This is used to link a page or usercontrol in to current page or usercontrol

8.@Implements: This is used to implement a specific .Net framework Interface in to current page or
usercontrol

9.@Outputcache: This is used to apply cache techniques in to the current page or usercontrol

10.@MasterType: This defines a class or virtual path used to type the master property of a page

11.@Previouspagetype: This is used to create a strongly typed reference to the source page from the target of a cross page posting.