private void set_define_events()
{
this.Load += f150_Danh_sach_nhan_vien_master_Load;
m_cmd_ma_nv_tiep_theo.Click += m_cmd_ma_nv_tiep_theo_Click;
//m_cmd_tai_file_excel_mau.Click += m_cmd_tai_file_excel_mau_Click;
m_cmd_chon_file.Click += m_cmd_chon_file_Click;
m_cmd_them.Click += m_cmd_them_Click;
m_cmd_sua.Click += m_cmd_sua_Click;
m_cmd_delete.Click += M_cmd_delete_Click;
m_cmd_refresh.Click += M_cmd_refresh_Click;
}