Use Link in Datagridview

DataGridViewLinkColumn links = new DataGridViewLinkColumn();
      links.HeaderText = "Hello";
      links.UseColumnTextForLinkValue = true;
      links.Text = "Email me";
      links.ActiveLinkColor = Color.White;
      links.LinkBehavior = LinkBehavior.SystemDefault;
      links.LinkColor = Color.Blue;
      links.TrackVisitedState = true;
      links.VisitedLinkColor = Color.YellowGreen;
      dataGridView1.Columns.Add(links);

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString() == "Email me")
            {
                MessageBox.Show(dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString());
            }
            else
            {
                MessageBox.Show("You Clicked another Cell");
            }
        }

private void dataGridView1_CellClick_1(object sender, DataGridViewCellEventArgs e)
       {
           //dataGridView1.GetCellCount(DataGridViewElementStates.Selected);
           if (dataGridView1.CurrentCell.Value.ToString()== "Email me")
           {
           //if (dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString() == "Email me")
           //{
               MessageBox.Show(dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString());
           }
           else
           {
               MessageBox.Show("You Clicked another Cell");
           }
       }