private void clear_data_hs_lns_in_form()
{
//lns
m_sle_chuc_danh_lns.EditValue = null;
m_sle_muc_lns.EditValue = null;
m_sle_chon_ly_do_chinh_sua_hs_lns.EditValue = null;
m_txt_hs_lns.Text = "";
m_txt_ghi_chu_hs_lns.Text = "";
m_dat_ngay_bat_dau_lns.Value = DateTime.Now.Date;
m_dat_ngay_ket_thuc_lns.Value = DateTime.Now.Date;
DS_V_F340_DAT_HS_LNS v_ds_gd_lns = new DS_V_F340_DAT_HS_LNS();
m_grc_f340_hs_lns.DataSource = v_ds_gd_lns.Tables[0];
}