private void get_nhan_vien()
{
US_DUNG_CHUNG v_us = new US_DUNG_CHUNG();
DataSet v_ds = new DataSet();
DataTable v_dt = new DataTable();
v_ds.Tables.Add(v_dt);
v_us.FillDatasetWithQuery(v_ds, "select ID, DIA_CHI_THUONG_TRU, MA_NV, HO_DEM +' ' +TEN as HO_TEN from DM_NHAN_VIEN");
m_slue_nhan_vien.Properties.DataSource = v_ds.Tables[0];
m_slue_nhan_vien.Properties.BestFitMode = BestFitMode.BestFitResizePopup;
}