private void frmAreas_Load(object sender, EventArgs e)
 {
     if (this.comando.Equals("editar"))
     {
         Modelo.Controle controle = new Modelo.Controle();
         controle.GetEditarExameArea(this.idExameArea);
         while (controle.Dr.Read())
         {
             txbID.Text   = this.idExameArea.ToString();
             txbArea.Text = controle.Dr.GetValue(1).ToString();
         }
     }
 }