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namespaces Element for pages (ASP.NET Settings Schema)

  • Articolo

Defines a collection of import directives to use during assembly pre-compilation.

This element is new in the .NET Framework version 2.0.

<namespaces
   autoImportVBNamespace="[True|False]"
> 
   <add /> 
   <remove /> 
   <clear/>
</namespaces>

Attributes and Elements

The following sections describe attributes, child elements, and parent elements.

Attributes

Attribute Description

autoImportVBNamespace

Optional Boolean attribute.

Defines whether the Microsoft.VisualBasic namespace is automatically imported in the applications that are in the scope of the configuration file.

The default is False.

Inherited attributes

Optional attributes.

Attributes inherited by all section elements.

Child Elements

Element Description

add

Optional element.

Adds a namespace to the collection of namespaces that are used during pre-compilation.

clear

Optional element.

Removes all references to inherited namespaces, allowing only the namespaces that are added by the current add element.

remove

Optional element.

Removes a reference to an inherited namespace from the collection of namespaces.

Parent Elements

Element Description

configuration

Specifies the required root element in every configuration file that is used by the common language runtime and the .NET Framework applications.

system.web

Specifies the root element for the ASP.NET configuration settings in a configuration file and contains configuration elements that configure ASP.NET Web applications and control how the applications behave.

pages

Defines page-specific configuration settings globally, such as ASP.NET directives, for pages and controls that are within the scope of the configuration file.

Remarks

The namespaces element defines a collection of import directives to use during assembly pre-compilation. This attribute corresponds to the @ Import directive on an ASP.NET page. The @ Import directive allows you to specify namespaces that are automatically imported into all pages of an application.

Default Configuration

The following default namespaces element is configured in the root Web.config file.

<pages>
   <namespaces>
      <add namespace="System" />
      <add namespace="System.Collections" />
      <add namespace="System.Collections.Specialized" />
      <add namespace="System.Configuration" />
      <add namespace="System.Text" />
      <add namespace="System.Text.RegularExpressions" />
      <add namespace="System.Web" />
      <add namespace="System.Web.Caching" />
      <add namespace="System.Web.SessionState" />
      <add namespace="System.Web.Security" />
      <add namespace="System.Web.Profile" />
      <add namespace="System.Web.UI" />
      <add namespace="System.Web.UI.WebControls" />
      <add namespace="System.Web.UI.WebControls.WebParts" />
      <add namespace="System.Web.UI.HtmlControls" />
   </namespaces>
   <!-- Other elements -->
</pages>

Element Information

Configuration section handler

PagesSection

Configuration member

Namespaces

NamespaceCollection

Configurable locations

Machine.config

Root-level Web.config

Application-level Web.config

Virtual or physical directory–level Web.config

Requirements

Microsoft Internet Information Services (IIS) version 5.0, 5.1, or 6.0

The .NET Framework version 2.0

Microsoft Visual Studio 2003 or Visual Studio 2005

See Also

Tasks

How to: Configure Specific Directories Using Location Settings
How to: Lock ASP.NET Configuration Settings

Reference

pages Element (ASP.NET Settings Schema)
add Element for namespaces for pages (ASP.NET Settings Schema)
clear Element for namespaces for pages (ASP.NET Settings Schema)
remove Element for namespaces for pages (ASP.NET Settings Schema)
tagMapping Element for pages (ASP.NET Settings Schema)
controls Element for pages (ASP.NET Settings Schema)
system.web Element (ASP.NET Settings Schema)
configuration Element (General Settings Schema)
@ Page
@ Import
System.Configuration
System.Web.Configuration
Namespaces
NamespaceCollection
PagesSection

Concepts

ASP.NET Configuration File Hierarchy and Inheritance
Securing ASP.NET Configuration

Other Resources

General Configuration Settings (ASP.NET)
ASP.NET Configuration Settings
Configuring ASP.NET Applications
ASP.NET Configuration API