'sell_tu_id
        SellTUCBO_BindingSource = New BindingSource
        SellTUCBO_BindingSource.DataSource = dsLookups.Tables("TULookup")
        With sell_tu_idCBO
            .DataSource = SellTUCBO_BindingSource  'dsLookups.Tables("TUsellLookup")
            .DisplayMember = "IDdescr"
            .ValueMember = "ID"
            .DataBindings.Add(New Binding("SelectedValue", ItemsBindingSource, "sell_tu_id", True))
        End With
        'sell_tu_id_type
        With sell_tu_id_typeCBO
            .DataSource = dsLookups.Tables("TUsellTypeLookup")
            .DisplayMember = "IDdescr"
            .ValueMember = "ID"
            .DataBindings.Add(New Binding("SelectedValue", ItemsBindingSource, "constrain_sell_tu_id", True))
        End With
        'purc_tu_id
        PurcTUCBO_BindingSource = New BindingSource
        PurcTUCBO_BindingSource.DataSource = dsLookups.Tables("TULookup")
        With purc_tu_idCBO
            .DataSource = PurcTUCBO_BindingSource  'dsLookups.Tables("TUpurcLookup")
            .DisplayMember = "IDdescr"
            .ValueMember = "ID"
            .DataBindings.Add(New Binding("SelectedValue", ItemsBindingSource, "purc_tu_id", True))
        End With