/// <summary>
        /// Adauga o alerta
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnAdaugaAlerta_Click(object sender, System.EventArgs e)
        {
            try
            {
                Salaries.Business.IstoricAlerte newAlerta = new Salaries.Business.IstoricAlerte();
                newAlerta.AlertaId        = 0;
                newAlerta.AngajatId       = AngajatID;
                newAlerta.DataExpirare    = Utilities.ConvertText2DateTime(txtDataExpirare.Text);
                newAlerta.Descriere       = txtDescriere.Text;
                newAlerta.PerioadaCritica = int.Parse(txtPerioadaCritica.Text);
                newAlerta.Activ           = chkActiv.Checked;

                newAlerta.InsertAlerta();
            }
            catch (Exception ex)
            {
                litError.Text  = "The following error occurred: <br>";
                litError.Text += ex.Message;
            }

            LoadIstoricAlerte();
        }