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LinkLabel.LinkVisited Property

Gets or sets a value indicating whether a link should be displayed as though it were visited.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public bool LinkVisited { get; set; }
/** @property */
public boolean get_LinkVisited ()

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

public function get LinkVisited () : boolean

public function set LinkVisited (value : boolean)

Property Value

true if links should display as though they were visited; otherwise, false. The default is false.

A LinkLabel control does not automatically denote that a link is a visited link. To display the link as a visited link, you can set the value of this property to true in an event handler for the LinkClicked event of a LinkLabel. A visited link is displayed using the color specified in the VisitedLinkColor property of the LinkLabel control. Once the form containing the LinkLabel control is closed, the "all display" state associated with the link is deleted. In order to retain the display state of the link, you need to store the display state of the link in a registry setting associated with your application.

NoteNote

This property only affects the first link defined in the LinkLabel control. If you have more than one link specified in the control, use the Visited property of the LinkLabel.Link class. You can access all the links defined in the LinkLabel by using the Links property.

The following example demonstrates setting the LinkBehavior property using the LinkBehavior enumeration. It also demonstrates setting the ActiveLinkColor, LinkColor and LinkVisited properties. To run this sample paste it in a blank form and call InitializeLinkLabel from the form's constructor or Load method.


// Declare the LinkLabel object.
internal System.Windows.Forms.LinkLabel LinkLabel1;

// Declare keywords array to identify links
string[] keywords;

private void InitializeLinkLabel()
{
    this.LinkLabel1 = new System.Windows.Forms.LinkLabel();
            this.LinkLabel1.Links.Clear();

    // Set the location, name and size.
    this.LinkLabel1.Location = new System.Drawing.Point(10, 20);
    this.LinkLabel1.Name = "CompanyLinks";
    this.LinkLabel1.Size = new System.Drawing.Size(104, 150);

    // Set the LinkBehavior property to show underline when mouse
    // hovers over the links.
    this.LinkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline;
    string textString = "For more information see our" +
        " company website or the research page at Contoso Ltd. ";

    // Set the text property.
    this.LinkLabel1.Text = textString;

    // Set the color of the links to black, unless the mouse
    // is hovering over a link.
    this.LinkLabel1.LinkColor = System.Drawing.Color.Black;
    this.LinkLabel1.ActiveLinkColor = System.Drawing.Color.Blue;

    // Associate the event-handling method with the LinkClicked
    // event.
    this.LinkLabel1.LinkClicked += 
        new LinkLabelLinkClickedEventHandler(LinkLabel1_LinkClicked);

    // Add links to the LinkCollection using starting index and
    // length of keywords.
    keywords = new string[]{"company", "research"};
    foreach ( string keyword in keywords )
    {
        this.LinkLabel1.Links.Add(textString.IndexOf(keyword), keyword.Length);
    }

    // Add the label to the form.
    this.Controls.Add(this.LinkLabel1);
}

private void LinkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{

    string url = "";

    // Determine which link was clicked and set the appropriate url.
    switch(LinkLabel1.Links.IndexOf(e.Link))
    {
        case 0:
            url = "www.microsoft.com";

            break;
        case 1:
            url = "www.contoso.com/research";
            break;
    }

    // Set the visited property to True. This will change
    // the color of the link.
    e.Link.Visited = true;

    // Open Internet Explorer to the correct url.
    System.Diagnostics.Process.Start("IExplore.exe", url);
}

// Declare the LinkLabel object.
private System.Windows.Forms.LinkLabel linkLabel1;

// Declare keywords array to identify links
private String keywords[];

private void InitializeLinkLabel()
{
    this.linkLabel1 = new System.Windows.Forms.LinkLabel();
    // Set the location, name and size.
    this.linkLabel1.set_Location(new System.Drawing.Point(10, 20));
    this.linkLabel1.set_Name("CompanyLinks");
    this.linkLabel1.set_Size(new System.Drawing.Size(104, 150));
    // Set the LinkBehavior property to show underline when mouse
    // hovers over the links.
    this.linkLabel1.set_LinkBehavior(
        System.Windows.Forms.LinkBehavior.HoverUnderline);
    String textString = "For more information see our" 
        + " company website or the research page at Contoso Ltd. ";
    // Set the text property.
    this.linkLabel1.set_Text(textString);
    // Set the color of the links to black, unless the mouse
    // is hovering over a link.
    this.linkLabel1.set_LinkColor(System.Drawing.Color.get_Black());
    this.linkLabel1.set_ActiveLinkColor(System.Drawing.Color.get_Blue());
    // Associate the event-handling method with the LinkClicked
    // event.
    this.linkLabel1.add_LinkClicked(new LinkLabelLinkClickedEventHandler(
        linkLabel1_LinkClicked));
    // Add links to the LinkCollection using starting index and
    // length of keywords.
    keywords = new String[] { "company", "research" };
    for (int iCtr = 0; iCtr < keywords.length; iCtr++) {
        String keyword = keywords[iCtr];
        this.linkLabel1.get_Links().Add(textString.IndexOf(keyword), 
            keyword.get_Length());
    }
    // Add the label to the form.
    this.get_Controls().Add(this.linkLabel1);
} //InitializeLinkLabel

private void linkLabel1_LinkClicked(Object sender, 
    LinkLabelLinkClickedEventArgs e)
{
    String url = "";
    // Determine which link was clicked and set the appropriate url.
    switch (linkLabel1.get_Links().IndexOf(e.get_Link())) {
        case 0:
            url = "www.microsoft.com";
            break;

        case 1:
            url = "www.contoso.com/research";
            break;
    }
    // Set the visited property to True. This will change
    // the color of the link.
    e.get_Link().set_Visited(true);
    // Open Internet Explorer to the correct url.
    System.Diagnostics.Process.Start("IExplore.exe", url);
} //linkLabel1_LinkClicked

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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, 1.1, 1.0

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