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LinkLabel Class

Updated: July 2008

Represents a Windows label control that can display hyperlinks.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public class LinkLabel extends Label implements IButtonControl

The ToolStripLabel control replaces and adds functionality to the Label and LinkLabel controls. However, the Label and LinkLabel controls are retained for both backward compatibility and future use, if you choose.

The LinkLabel control is similar to a Label control with the exception that it can display a hyperlink. Multiple hyperlinks can be specified in the text of the control. Each hyperlink can perform a different task within an application. For example, you can use a hyperlink to display a Web site in Microsoft Internet Explorer or to load a log file associated with an application.

Each hyperlink displayed in the LinkLabel control is an instance of the LinkLabel.Link class. The LinkLabel.Link class defines display information, state, and location of the hyperlink. In addition, the LinkData property of the LinkLabel.Link class enables you to associate information, such as a URL to display, with the hyperlink. When a user clicks a hyperlink within the control, the LinkClicked event is raised, and the LinkLabel.Link object representing the hyperlink that was clicked is passed as part of the LinkLabelLinkClickedEventArgs object that is passed as a parameter to the event handler. You can use this object to obtain the LinkLabel.Link object associated with the hyperlink that was clicked by the user. All hyperlinks contained within the LinkLabel control are stored in the LinkLabel.LinkCollection class instance for the control.

There are two ways to add a hyperlink to the LinkLabel control. The quickest way is to specify a LinkArea and assign it to the LinkArea property. This enables you to specify a single hyperlink within the text of the control. To add multiple hyperlinks, you can use the Add method of the LinkLabel.LinkCollection class by accessing the collection through the Links property.

When a LinkLabel control is created, a default hyperlink that contains all the text within the LinkLabel control is added to the LinkLabel.LinkCollection. You can override this default link by specifying a new link area with the LinkArea property, or specify a link using the Add method of the LinkLabel.LinkCollection. You can also remove the default hyperlink by using the Remove method of the LinkLabel.LinkCollection class.

The LinkLabel class inherits the TabStop property from the Label class. The TabStop property is true by default, as long as there is at least one link of greater than zero length in the Links collection. The LinkLabel control has a single TabIndex value. However, each link of greater than zero length gets its own tab stop, in left-to-right order. To prevent tab navigation to the LinkLabel control, set the TabStop property to false. However, be aware that adding new links to the Links collection will automatically set the TabStop property to true again.

The LinkLabel provides a number of properties that enable you to define the display appearance of hyperlinks in the control. The ActiveLinkColor, DisabledLinkColor, LinkColor, and VisitedLinkColor properties define the colors used when displaying a hyperlink in various states. The LinkBehavior property defines the display of the underline that is associated with a hyperlink.

The following example demonstrates using the LinkLabel class. The example handles the LinkClicked event by opening a Web site.

No code example is currently available or this language may not be supported.

The following example demonstrates using the LinkLabel class, with multiple LinkArea sections defined, to display a label on a form. The example demonstrates setting the AutoSize, LinkBehavior, DisabledLinkColor, LinkColor, and VisitedLinkColor properties to customize the look of the LinkLabel. The first LinkArea is specified using the LinkLabel.LinkArea property. Additional links are added to the LinkLabel using the LinkLabel.LinkCollection.Add method. The example handles the LinkClicked event by starting the Web browser for hyperlinks, and displaying a MessageBox for other links.

No code example is currently available or this language may not be supported.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0

Date

History

Reason

July 2008

Added a paragraph about the TabStop property.

Customer feedback.

July 2008

Added a simple code example that uses the LinkClicked event.

Customer feedback.

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