private void btnAddNew_Click(object sender, EventArgs e)
        {
            try
            {

                aContracts_AllowancesEN.RealSalaryPlus = Convert.ToDecimal(txtRealSalaryPlus.Text);
                aContracts_AllowancesEN.ApplyDate = Convert.ToDateTime(dtpApplyDate.Text);
                aContracts_AllowancesEN.Type = cboType.SelectedIndex + 1;
                aContracts_AllowancesEN.Status = cboStatus.SelectedIndex + 1;
                aContracts_AllowancesEN.Disable = Convert.ToBoolean(cboDisable.Text);
                Contracts_AllowancesBO aContracts_AllowancesBO = new Contracts_AllowancesBO();
                aContracts_AllowancesBO.Insert(aContracts_AllowancesEN);
                MessageBox.Show("Thêm mới thành công.", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.afrmLst_Contracts_Allowances.ReloadData();
                this.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show("frmIns_Contracts_Allowances.btnAddNew_Click\n" + ex.ToString(), "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }