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LinkBehavior Enumeration

Specifies the behaviors of a link in a LinkLabel.

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

public enum LinkBehavior
public enum LinkBehavior
public enum LinkBehavior
 Member nameDescription
AlwaysUnderlineThe link always displays with underlined text. 
HoverUnderlineThe link displays underlined text only when the mouse is hovered over the link text. 
NeverUnderlineThe link text is never underlined. The link can still be distinguished from other text by use of the LinkColor property of the LinkLabel control. 
SystemDefaultThe behavior of this setting depends on the options set using the Internet Options dialog box in Control Panel or Internet Explorer. 

Use the members of this enumeration to set the value of the LinkBehavior property of the LinkLabel.

The following example demonstrates setting the LinkLabel.LinkBehavior property using the LinkBehavior enumeration. It alsodemonstrates setting the LinkLabel.LinkColor, Text and LinkVisited properties. To run this sample place it in a blank form and call the InitializeLinkLabel method 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 Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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