private void set_define_events()
{
this.Load += F315_card_nhan_vien_Load;
m_cmd_filter.Click += m_cmd_filter_Click;
m_cmd_xuat_pdf.Click += m_cmd_xuat_pdf_Click;
m_cmd_xuat_excel.Click += M_cmd_xuat_excel_Click;
m_tab_controll.SelectedPageChanged += M_tab_controll_SelectedPageChanged;
}