Attribute Description
AutoEventWireup Specifies whether the master page's events are bound to methods with a particular name. The default is true.
ClassName Specifies the name for the class created to render the master page. This value can be any valid class name but shouldn't include a namespace.
CompilerOptions Specifies a sequence of compiler command-line switches used to compile the master class. The target compiler depends on the language of choice.
Debug Specifies whether to compile the master page with debug symbols. If true, the master source code won't be deleted and can be retrieved under the temporary ASP.NET files folder.
Description Provides a text description of the master page.
EnableViewState Specifies whether view state for the controls in the master page is maintained across page requests. The default is true.
EnableTheming Specifies whether themes for the controls in the master page are enabled. The default is true.
Explicit Specifies whether the master page will be compiled using VB.NET's Option Explicit mode. Other languages ignore this attribute. The default is false.
Inherits Specifies a code-behind class for the master page to inherit. This can be any class derived from MasterPage.
Language Specifies the master page language.
MasterPageFile Specifies the name of the master page file that this master refers to. A master can refer to another master using the same mechanisms a page uses to attach to a master. You will have nested masters if you set this attribute.
Strict Specifies whether the master page will be compiled using VB.NET's Option Strict mode. Other languages ignore this attribute. The default is false.
Src Specifies the code-behind class's source filename to compile dynamically when the master page is requested.
WarningLevel Specifies the compiler warning level at which the compiler will abort master page compilation.

Table 1 Build Strong Master Pages.
These 15 attributes are supported by the @Master directive. You can transform an ordinary page into a master page by using these attributes, which define the constants of the page and the location of the variables.