| Directive | Description |
| @ Assembly | Links an assembly to the current page or user control declaratively. |
| @ Control | Defines control-specific attributes used by the ASP.NET page parser and compiler and can be included only in .ascx files (user controls). |
| @ Implements | Indicates that a page or user control implements a specified .NET Framework interface declaratively. |
| @ Import | Imports a namespace into a page or user control explicitly. |
| @ Master | Identifies a page as a master page and defines attributes used by the ASP.NET page parser and compiler and can be included only in .master files. |
| @ MasterType | Defines the class or virtual path used to type the Master property of a page. |
| @ OutputCache | Controls the output caching policies of a page or user control declaratively. |
| @ Page | Defines page-specific attributes used by the ASP.NET page parser and compiler and can be included only in .aspx files. |
| @ PreviousPageType | Creates a strongly typed reference to the source page from the target of a cross-page posting. |
| @ Reference | Links a page, user control, or COM control to the current page or user control declaratively. |
| @ Register | Associates aliases with namespaces and classes, which allow user controls and custom server controls to be rendered when included in a requested page or user control. |
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| @ Page | Defines page-specific attributes used by the ASP.NET page parser and compiler. Can be included only in .aspx files. |
| @ Control | Defines control-specific attributes used by the ASP.NET page parser and compiler. Can be included only in .ascx files (user controls). |
| @ Import | Explicitly imports a namespace into a page or user control. |
| @ Implements | Declaratively indicates that a page or user control implements a specified .NET Framework interface. |
| @ Register | Associates aliases with namespaces and class names, thereby allowing user controls and custom server controls to be rendered when included in a requested page or user control. |
| @ Assembly | Declaratively links an assembly to the current page or user control. |
| @ OutputCache | Declaratively controls the output caching policies of a page or user control. |
| @ Reference | Declaratively links a page or user control to the current page or user control. |