private void set_define_event()
{
Load += f470_bao_cao_thong_ke_lao_dong_Load;
m_cmd_filter.Click += m_cmd_filter_Click;
m_cmd_xuat_excel.Click += m_cmd_xuat_excel_Click;
this.m_pvg_main.FieldValueDisplayText += m_pvg_main_FieldValueDisplayText;
}