private void set_define_events()
{
this.Load += f321_chi_tiet_hop_dong_da_ky_theo_thoi_gian_Load;
this.FormClosed += f321_chi_tiet_hop_dong_da_ky_theo_thoi_gian_FormClosed;
m_cmd_search.Click += m_cmd_search_Click;
m_cmd_xuat_excel.Click += m_cmd_xuat_excel_Click;
}