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Image.GenerateEmptyAlternateText Property

Note: This property is new in the .NET Framework version 2.0.

Gets or sets a value indicating whether the control generates an alternate text attribute for an empty string value.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public virtual bool GenerateEmptyAlternateText { get; set; }
/** @property */
public boolean get_GenerateEmptyAlternateText ()

/** @property */
public void set_GenerateEmptyAlternateText (boolean value)

public function get GenerateEmptyAlternateText () : boolean

public function set GenerateEmptyAlternateText (value : boolean)

Property Value

true if the control generates the alternate text attribute for an empty string value; otherwise, false. The default is false.

By default, when the AlternateText property is not set, the Image control does not include the alt attribute to specify the alternate text in the control rendering. Set the GenerateEmptyAlternateText property to true to always include the alternate text attribute in rendered output for the Image control.

The XHTML document type definition requires the alt attribute on image controls. However, accessibility best practices recommend that controls not specify empty alternate-text attributes. You can meet both XHTML and accessibility requirements by setting the AlternateText property to a string describing the image; this generates an alt attribute for the control and sets the attribute to a meaningful value.

TopicLocation
Walkthrough: Creating an Accessible Web ApplicationBuilding ASP .NET Web Applications in Visual Studio

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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