DataGridViewComboBoxColumn myGridColumnCB = new DataGridViewComboBoxColumn();
                        myGridColumnCB.Name = itemCol.ColName.Trim();
                        myGridColumnCB.DataPropertyName = itemCol.namePole.Trim();
                        myGridColumnCB.HeaderText = itemCol.PoleTitle.Trim();

                                ObjectQuery<Sprav> query = new ObjectQuery<Sprav>("Sprav", conSprav);
                                ObjectQuery<DbDataRecord> queryS1 = query.Select("it.cod, naz");


                                BindingSource myCBBS1 = new BindingSource();
                                myCBBS1.DataSource = queryS1;
                                myGridColumnCB.DataSource = myCBBS1;
                                myGridColumnCB.DisplayMember = itemCol.StrSourVal.Trim();
                                myGridColumnCB.ValueMember = itemCol.StrSourKey.Trim();