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add Element for clientTarget (ASP.NET Settings Schema)

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Adds an alias for a specific user agent to an internal collection of user agent aliases.

<add alias="alias for user agent" 
     userAgent="user agent identification"/>

Attributes and Elements

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

Attributes

Attribute Description

alias

Required attribute.

Specifies the name that is used to refer to a specific user agent.

userAgent

Required attribute.

Specifies the identification for the user agent.

Child Elements

None.

Parent Elements

Element Description

configuration

Specifies the 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 section.

clientTarget

Adds aliases for specific user agents to an internal collection of user agent aliases.

Remarks

The collection of user agent aliases indicates the target user agents that ASP.NET server controls should render content for.

Default Configuration

The following default add element is configured in the root Web.config file in the .NET Framework version 2.0.

<add alias="ie5" userAgent="Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0" />
<add alias="ie4" userAgent="Mozilla/4.0 (compatible; MSIE 4.0; Windows NT 4.0" />
<add alias="uplevel" userAgent="Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.1)" />
<add alias="downlevel" userAgent="Generic Downlevel" />

The following default add element is configured in the Machine.config file in the .NET Framework versions 1.0 and 1.1.

<add alias="ie5" userAgent="Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0)"/>
<add alias="ie4" userAgent="Mozilla/4.0 (compatible; MSIE 4.0; Windows NT 4.0)"/>
<add alias="uplevel" userAgent="Mozilla/4.0 (compatible; MSIE 4.0; Windows NT 4.0)"/>
<add alias="downlevel" userAgent="Unknown"/>

Example

The following code example demonstrates how to add four user agent aliases to the internal user agent alias collection.

<configuration>
   <system.web>
      <clientTarget>
         <add alias="ie5" userAgent="Mozilla/4.0 (compatible; 
                     MSIE 5.5; Windows NT 4.0)"/>
         <add alias="ie4" userAgent="Mozilla/4.0 (compatible; 
                     MSIE 4.0; Windows NT 4.0)"/>
         <add alias="uplevel" userAgent="Mozilla/4.0 (compatible; 
                     MSIE 4.0; Windows NT 4.0)"/>
         <add alias="downlevel" userAgent="Unknown"/>
      </clientTarget>
   </system.web>
</configuration>

Element Information

Configuration section handler

System.Web.Configuration.ClientTargetSection

Configuration member

Add

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 1.0, 1.1, or 2.0

Microsoft Visual Studio 2003 or Visual Studio 2005

See Also

Tasks

How to: Lock ASP.NET Configuration Settings

Reference

clientTarget Element (ASP.NET Settings Schema)
system.web Element (ASP.NET Settings Schema)
configuration Element (General Settings Schema)
clear Element for clientTarget (ASP.NET Settings Schema)
remove Element for clientTarget (ASP.NET Settings Schema)
@ Page
System.Configuration
System.Web.Configuration

Concepts

ASP.NET Configuration Overview
ASP.NET Web Server Controls and Browser Capabilities
Securing ASP.NET Configuration
ASP.NET Configuration Scenarios

Other Resources

ASP.NET Configuration Files
ASP.NET Configuration Settings
General Configuration Settings (ASP.NET)
ASP.NET Configuration API