Csharp/C Sharp/GUI Windows Form/LinkLabel

About Box Links

<source lang="csharp"> /* User Interfaces in C#: Windows Forms and Custom Controls by Matthew MacDonald Publisher: Apress ISBN: 1590590457

• /

using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace AboutBoxLinks {

   /// <summary>
   /// Summary description for AboutBoxLinks.
   /// </summary>
   public class AboutBoxLinks : System.Windows.Forms.Form
   {
       internal System.Windows.Forms.LinkLabel lnkBuy;
       internal System.Windows.Forms.LinkLabel lnkWebSite;
       /// <summary>
       /// Required designer variable.
       /// </summary>
       private System.ruponentModel.Container components = null;
       public AboutBoxLinks()
       {
           //
           // Required for Windows Form Designer support
           //
           InitializeComponent();
           //
           // TODO: Add any constructor code after InitializeComponent call
           //
       }
       /// <summary>
       /// Clean up any resources being used.
       /// </summary>
       protected override void Dispose( bool disposing )
       {
           if( disposing )
           {
               if (components != null) 
               {
                   components.Dispose();
               }
           }
           base.Dispose( disposing );
       }
       #region Windows Form Designer generated code
       /// <summary>
       /// Required method for Designer support - do not modify
       /// the contents of this method with the code editor.
       /// </summary>
       private void InitializeComponent()
       {
           this.lnkBuy = new System.Windows.Forms.LinkLabel();
           this.lnkWebSite = new System.Windows.Forms.LinkLabel();
           this.SuspendLayout();
           // 
           // lnkBuy
           // 
           this.lnkBuy.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
           this.lnkBuy.LinkArea = new System.Windows.Forms.LinkArea(0, 0);
           this.lnkBuy.Location = new System.Drawing.Point(26, 79);
           this.lnkBuy.Name = "lnkBuy";
           this.lnkBuy.Size = new System.Drawing.Size(244, 48);
           this.lnkBuy.TabIndex = 5;
           this.lnkBuy.Text = "Buy it at Amazon.ru or Barnes and Noble.";
           this.lnkBuy.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.lnkWebSite_LinkClicked);
           // 
           // lnkWebSite
           // 
           this.lnkWebSite.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
           this.lnkWebSite.LinkArea = new System.Windows.Forms.LinkArea(0, 0);
           this.lnkWebSite.Location = new System.Drawing.Point(26, 35);
           this.lnkWebSite.Name = "lnkWebSite";
           this.lnkWebSite.Size = new System.Drawing.Size(248, 36);
           this.lnkWebSite.TabIndex = 4;
           this.lnkWebSite.Text = "See www.prosetech.ru for more information.";
           this.lnkWebSite.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.lnkWebSite_LinkClicked);
           // 
           // AboutBoxLinks
           // 
           this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
           this.ClientSize = new System.Drawing.Size(300, 162);
           this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                         this.lnkBuy,
                                                                         this.lnkWebSite});
           this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
           this.Name = "AboutBoxLinks";
           this.Text = "Link Examples";
           this.Load += new System.EventHandler(this.AboutBoxLinks_Load);
           this.ResumeLayout(false);
       }
       #endregion
       /// <summary>
       /// The main entry point for the application.
       /// </summary>
       [STAThread]
       static void Main() 
       {
           Application.Run(new AboutBoxLinks());
       }
       private void AboutBoxLinks_Load(object sender, System.EventArgs e)
       {
           lnkBuy.Links.Add(10, 10, "http://www.amazon.ru");
           lnkBuy.Links.Add(24, 16, "http://www.bn.ru");
           lnkWebSite.Links.Add(4, 17, "http://www.prosetech.ru");
       }
       private void lnkWebSite_LinkClicked(object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e)
       {
           e.Link.Visited = true;
           System.Diagnostics.Process.Start((string)e.Link.LinkData);
       }
   }

}

      </source>

Change LinkColor after it has been clicked

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form {

     private System.Windows.Forms.LinkLabel driveLinkLabel;
     private System.Windows.Forms.LinkLabel deitelLinkLabel;
     private System.Windows.Forms.LinkLabel notepadLinkLabel;
     
     public Form1() {
       InitializeComponent();
     }
     private void driveLinkLabel_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
     {
       driveLinkLabel.LinkVisited = true;
       System.Diagnostics.Process.Start( @"C:\" );
     } 
     private void deitelLinkLabel_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
     {
       deitelLinkLabel.LinkVisited = true;
       System.Diagnostics.Process.Start( "IExplore", "http://www.nfex.ru" );
     }
     private void notepadLinkLabel_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
     {
        notepadLinkLabel.LinkVisited = true;
        System.Diagnostics.Process.Start( "notepad" );
     }
     private void InitializeComponent()
     {
        this.driveLinkLabel = new System.Windows.Forms.LinkLabel();
        this.deitelLinkLabel = new System.Windows.Forms.LinkLabel();
        this.notepadLinkLabel = new System.Windows.Forms.LinkLabel();
        this.SuspendLayout();
        // 
        // driveLinkLabel
        // 
        this.driveLinkLabel.AutoSize = true;
        this.driveLinkLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.driveLinkLabel.Location = new System.Drawing.Point(28, 24);
        this.driveLinkLabel.Name = "driveLinkLabel";
        this.driveLinkLabel.Size = new System.Drawing.Size(133, 20);
        this.driveLinkLabel.TabIndex = 0;
        this.driveLinkLabel.TabStop = true;
        this.driveLinkLabel.Text = "Click to browse C:\\";
        this.driveLinkLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.driveLinkLabel_LinkClicked);
        // 
        // deitelLinkLabel
        // 
        this.deitelLinkLabel.AutoSize = true;
        this.deitelLinkLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.deitelLinkLabel.Location = new System.Drawing.Point(28, 68);
        this.deitelLinkLabel.Name = "deitelLinkLabel";
        this.deitelLinkLabel.Size = new System.Drawing.Size(198, 20);
        this.deitelLinkLabel.TabIndex = 1;
        this.deitelLinkLabel.TabStop = true;
        this.deitelLinkLabel.Text = "Click to visit www.nfex.ru";
        this.deitelLinkLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.deitelLinkLabel_LinkClicked);
        // 
        // notepadLinkLabel
        // 
        this.notepadLinkLabel.AutoSize = true;
        this.notepadLinkLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.notepadLinkLabel.Location = new System.Drawing.Point(28, 114);
        this.notepadLinkLabel.Name = "notepadLinkLabel";
        this.notepadLinkLabel.Size = new System.Drawing.Size(147, 20);
        this.notepadLinkLabel.TabIndex = 2;
        this.notepadLinkLabel.TabStop = true;
        this.notepadLinkLabel.Text = "Click to run Notepad";
        this.notepadLinkLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.notepadLinkLabel_LinkClicked);
        // 
        // LinkLabelTestForm
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(261, 164);
        this.Controls.Add(this.notepadLinkLabel);
        this.Controls.Add(this.deitelLinkLabel);
        this.Controls.Add(this.driveLinkLabel);
        this.Name = "LinkLabelTestForm";
        this.Text = "LinkLabelTest";
        this.ResumeLayout(false);
        this.PerformLayout();
     }
     [STAThread]
     static void Main()
     {
       Application.EnableVisualStyles();
       Application.Run(new Form1());
     }

}

      </source>

LinkLabel Clicked event

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form {

     private System.Windows.Forms.LinkLabel driveLinkLabel;
     private System.Windows.Forms.LinkLabel deitelLinkLabel;
     private System.Windows.Forms.LinkLabel notepadLinkLabel;
     
     public Form1() {
       InitializeComponent();
     }
     private void driveLinkLabel_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
     {
       driveLinkLabel.LinkVisited = true;
       System.Diagnostics.Process.Start( @"C:\" );
     } 
     private void deitelLinkLabel_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
     {
       deitelLinkLabel.LinkVisited = true;
       System.Diagnostics.Process.Start( "IExplore", "http://www.nfex.ru" );
     }
     private void notepadLinkLabel_LinkClicked( object sender, LinkLabelLinkClickedEventArgs e )
     {
        notepadLinkLabel.LinkVisited = true;
        System.Diagnostics.Process.Start( "notepad" );
     }
     private void InitializeComponent()
     {
        this.driveLinkLabel = new System.Windows.Forms.LinkLabel();
        this.deitelLinkLabel = new System.Windows.Forms.LinkLabel();
        this.notepadLinkLabel = new System.Windows.Forms.LinkLabel();
        this.SuspendLayout();
        // 
        // driveLinkLabel
        // 
        this.driveLinkLabel.AutoSize = true;
        this.driveLinkLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.driveLinkLabel.Location = new System.Drawing.Point(28, 24);
        this.driveLinkLabel.Name = "driveLinkLabel";
        this.driveLinkLabel.Size = new System.Drawing.Size(133, 20);
        this.driveLinkLabel.TabIndex = 0;
        this.driveLinkLabel.TabStop = true;
        this.driveLinkLabel.Text = "Click to browse C:\\";
        this.driveLinkLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.driveLinkLabel_LinkClicked);
        // 
        // deitelLinkLabel
        // 
        this.deitelLinkLabel.AutoSize = true;
        this.deitelLinkLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.deitelLinkLabel.Location = new System.Drawing.Point(28, 68);
        this.deitelLinkLabel.Name = "deitelLinkLabel";
        this.deitelLinkLabel.Size = new System.Drawing.Size(198, 20);
        this.deitelLinkLabel.TabIndex = 1;
        this.deitelLinkLabel.TabStop = true;
        this.deitelLinkLabel.Text = "Click to visit www.nfex.ru";
        this.deitelLinkLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.deitelLinkLabel_LinkClicked);
        // 
        // notepadLinkLabel
        // 
        this.notepadLinkLabel.AutoSize = true;
        this.notepadLinkLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.notepadLinkLabel.Location = new System.Drawing.Point(28, 114);
        this.notepadLinkLabel.Name = "notepadLinkLabel";
        this.notepadLinkLabel.Size = new System.Drawing.Size(147, 20);
        this.notepadLinkLabel.TabIndex = 2;
        this.notepadLinkLabel.TabStop = true;
        this.notepadLinkLabel.Text = "Click to run Notepad";
        this.notepadLinkLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.notepadLinkLabel_LinkClicked);
        // 
        // LinkLabelTestForm
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(261, 164);
        this.Controls.Add(this.notepadLinkLabel);
        this.Controls.Add(this.deitelLinkLabel);
        this.Controls.Add(this.driveLinkLabel);
        this.Name = "LinkLabelTestForm";
        this.Text = "LinkLabelTest";
        this.ResumeLayout(false);
        this.PerformLayout();
     }
     [STAThread]
     static void Main()
     {
       Application.EnableVisualStyles();
       Application.Run(new Form1());
     }

}

      </source>