private void clear_data_in_form()
{
m_sle_chon_nhan_vien.EditValue = null;
m_sle_chon_quyet_dinh.EditValue = null;
m_lbl_hs_lns.Text = "...";
m_lbl_so_tien_lcd.Text = "...";
m_sle_chuc_danh_lns.EditValue = null;
m_sle_muc_lns.EditValue = null;
m_sle_chuc_danh_lcd.EditValue = null;
m_sle_muc_lcd.EditValue = null;
m_lbl_hs_lns.Text = "...";
m_lbl_so_tien_lcd.Text = "...";
DS_V_F330_LEN_LUONG_CHO_NV v_ds = new DS_V_F330_LEN_LUONG_CHO_NV();
m_grc_tang_giam_luong_cho_nv.DataSource = v_ds.Tables[0];
}