private void load_data_to_sle_chuc_vu()
{
US_DM_CHUC_VU v_us = new US_DM_CHUC_VU();
DS_DM_CHUC_VU v_ds = new DS_DM_CHUC_VU();
v_us.FillDataset(v_ds, " where id_don_vi = " + Convert.ToDecimal(m_sle_don_vi.EditValue));
m_sle_chuc_vu.Properties.DataSource = v_ds.Tables[0];
m_sle_chuc_vu.Properties.DisplayMember = DM_CHUC_VU.TEN_CHUC_VU;
m_sle_chuc_vu.Properties.ValueMember = DM_CHUC_VU.ID;
//m_sle_chuc_vu.Properties.NullText = "---Chọn chức vụ---";
m_sle_chuc_vu.Properties.TextEditStyle = DevExpress.XtraEditors.Controls.TextEditStyles.Standard;
m_sle_chuc_vu.Properties.BestFitMode = DevExpress.XtraEditors.Controls.BestFitMode.BestFit;
}