An Overview Of Link Label In C#

By ArunGG
From http://www.csharphelp.com/archives/archive221.html

Introduction:

The LinkLabel control exhibits links to other objects, such as files or Web pages. Class LinkLabel is derived from class Label and therefore inherits all of class Label�s functionality. A LinkLabel looks as underlined text. When the mouse moves above the link, the pointer modify to a hand. This is alike to the behavior of a hyperlink in a Web page. The link can change color to indicate whether the link is new, visited or active. When clicked, the LinkLabel generates a LinkClicked event.

Class LinkLabel :

Class LinkLabel is derived from class Label and therefore inherits all of class Label�s functionality. Hand image displays when mouse moves over LinkLabel.

Some common Properties of LinkLabel:

ActiveLinkColor - Denotes the color of the active link when clicked. Default is red. LinkColor - Denotes the original color of every links prior to they have been visited. Default is blue.
Links - Lists the LinkLabel Link objects, which are the links enclosed in the LinkLabel.
LinkVisited - If True, link appears as though it were visited (its color is changed to that specified by property VisitedLinkColor).
Text - Denotes the text to show on the control.
VisitedLinkColor - Denotes the color of visited links. Default is purple.
LinkArea - Denotes which part of text in the LinkLabel is treated as element of the link.
LinkBehavior - Denotes the link�s behavior, for example how the link come into view when the mouse is positioned over it.
LinkClicked - Generated when link is clicked.

Now let us see the usage of LinkLabel control with an example:
In this example I place a LinkLabel control with the text "To know C# - visit www.csharpheaven.com - Click Here!" and provide a link to a portion of the text. So that when clicked, the LinkLabel generates a LinkClicked event.

The Example:

    using System;
   using System.Drawing;
   using System.ComponentModel;
   using System.WinForms;
   public class LinkLabel : System.WinForms.Form {
   private System.WinForms.LinkLabel linkLabel1;
      
       public LinkLabel() {

          InitializeComponent();

       }

       public override void Dispose() {
           base.Dispose();
         }

       public static void Main(string[] args) {
           Application.Run(new  LinkLabel());}
           private void InitializeComponent()
 {
  this.linkLabel1 = new System.WinForms.LinkLabel();
       linkLabel1.Text = "To know C# - visit www.csharpheaven.com - Click Here!";
  linkLabel1.Size = new System.Drawing.Size(168, 56);
  linkLabel1.LinkColor =
  (System.Drawing.Color)System.Drawing.Color.FromARGB((byte)128,(byte)255, (byte)255);
  linkLabel1.LinkArea = new System.Drawing.Point(42, 11);
  linkLabel1.ForeColor = System.Drawing.Color.Maroon;
  linkLabel1.Font = new System.Drawing.Font("Times New Roman", 10f,
  System.Drawing.FontStyle.Bold);
  linkLabel1.TabIndex = 0;
  linkLabel1.TabStop = true;
  linkLabel1.Location = new System.Drawing.Point(8, 16);
  linkLabel1.LinkClick += new System.EventHandler(linkLabel1_LinkClicked);
  this.Controls.Add(linkLabel1);
       this.BackColor =
  (System.Drawing.Color)System.Drawing.Color.FromARGB((byte)255, (byte)128, (byte)128);
 }
   protected void linkLabel1_LinkClicked(object sender, System.EventArgs e)
 {
System.Diagnostics.Process.Start("IExplore"," http://www.csharphelp.com");

 }
  
   }

Here the above program is written by hand (Adding LinkLabelcontrol to a form programmatically)

The program below is the code generated by the WINDES.exe.

// Win32Form1.cs
namespace Win32Form1Namespace {
  
   using System;
   using System.Drawing;
   using System.ComponentModel;
   using System.WinForms;

   /// 

   ///    Summary description for Win32Form1.
   /// 
   public class Win32Form1 : System.WinForms.Form {

       /// 

       ///    Required by the Win Forms designer
       /// 
 private System.ComponentModel.Container components;
   private System.WinForms.LinkLabel linkLabel1;
      
       public Win32Form1() {

           // Required for Win Form Designer support
           InitializeComponent();


           // TODO: Add any constructor code after InitializeComponent call

       }

       /// 

       ///    Clean up any resources being used
       /// 
       public override void Dispose() {
           base.Dispose();
           components.Dispose();
       }

       /// 

       ///    The main entry point for the application.
       /// 
       public static void Main(string[] args) {
           Application.Run(new Win32Form1());
       }

       /// 

       ///    Required method for Designer support - do not modify
       ///    the contents of this method with an editor
       /// 
       private void InitializeComponent()
 {
  this.components = new System.ComponentModel.Container();
  this.linkLabel1 = new System.WinForms.LinkLabel();
  
  //@design this.TrayHeight = 0;
  //@design this.TrayLargeIcon = false;
  //@design this.TrayAutoArrange = true;
  linkLabel1.Text = "To know C# - visit www.csharpheaven.com - Click Here!";
  linkLabel1.Size = new System.Drawing.Size(184, 56);
  linkLabel1.LinkColor = System.Drawing.Color.Teal;
  linkLabel1.LinkArea = new System.Drawing.Point(42, 11);
  linkLabel1.ForeColor = System.Drawing.Color.Maroon;
  linkLabel1.Font =
  new System.Drawing.Font("Times New Roman", 10f, System.Drawing.FontStyle.Bold);
  linkLabel1.TabIndex = 0;
  linkLabel1.DisabledLinkColor = System.Drawing.Color.Yellow;
  linkLabel1.TabStop = true;
  linkLabel1.Location = new System.Drawing.Point(8, 16);
  linkLabel1.BackColor =
  (System.Drawing.Color)System.Drawing.Color.FromARGB((byte)255, (byte)192, (byte)128);
  linkLabel1.LinkClick += new System.EventHandler(linkLabel1_LinkClick);
  
  this.Text = "Win32Form1";
  this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
  this.KeyPreview = true;
  this.TransparencyKey = System.Drawing.Color.White;
  this.BackColor =
  (System.Drawing.Color)System.Drawing.Color.FromARGB((byte)255, (byte)128, (byte)128);
  this.ClientSize = new System.Drawing.Size(272, 149);
  this.Click += new System.EventHandler(Win32Form1_Click);
  
  this.Controls.Add(linkLabel1);
 }
   protected void Win32Form1_Click(object sender, System.EventArgs e)
 {
  
 }
   protected void linkLabel1_LinkClick(object sender, System.EventArgs e)
 {
System.Diagnostics.Process.Start("IExplore", "http://www.csharphelp.com" );

      linkLabel1.LinkVisited = true;
 }

   }
}