private void set_define_events()
{
this.Load += f350_quan_ly_vi_tri_cong_tac_Load;
m_sle_chon_nhan_vien.EditValueChanged += m_sle_chon_nhan_vien_EditValueChanged;
m_sle_chon_loai_cong_tac.EditValueChanged += m_sle_chon_loai_cong_tac_EditValueChanged;
m_cmd_insert.Click += m_cmd_insert_Click;
m_cmd_huy_kiem_nhiem.Click += m_cmd_huy_kiem_nhiem_Click;
m_cmd_chon_file.Click += m_cmd_chon_file_Click;
m_cmd_update.Click += m_cmd_update_Click;
}