private void load_data_2_sle_chon_nv()
{
m_sle_chon_nhan_vien.Properties.DataSource = load_data_2_ds_v_dm_nv().Tables[0];
m_sle_chon_nhan_vien.Properties.TextEditStyle = DevExpress.XtraEditors.Controls.TextEditStyles.Standard;
m_sle_chon_nhan_vien.Properties.BestFitMode = DevExpress.XtraEditors.Controls.BestFitMode.BestFit;
}