protected void btnDelete_Click(object sender, EventArgs e)
 {
     try
     {
         if (lblId.Text == "-1")
         {
             return;
         }
         else
         {
             Person person = new Person();
             person.Id        = int.Parse(lblId.Text);
             personRepository = new PersonData();
             personRepository.RemovePerson(person);
             ReturnToList();
         }
     }
     catch (Exception ex)
     {
         AddMessage(ex);
     }
 }