private void set_initial_form_load()
{
m_dat_ngay_bat_dau.DateTime = DateTime.Now.Date;
m_dat_ngay_ky.DateTime = DateTime.Now.Date;
load_data_to_sle_nhan_vien();
load_data_to_sle_loai_hop_dong();
load_data_to_sle_loai_lao_dong();
load_data_to_sle_don_vi();
m_sle_don_vi.EditValueChanged += m_sle_don_vi_EditValueChanged;
load_data_to_sle_ma_lcd();
load_data_to_sle_muc_lcd();
load_data_to_sle_ma_lns();
load_data_to_sle_muc_lns();
set_defines_event();
}