lookUpEdit

        private void Form1_Load(object sender, System.EventArgs e) {
            propertyGrid1.SelectedObject = lookUpEdit1.Properties;
            pnlHint.Caption =  "This demo demonstrates how to use a DataView as a data source for a Lookup editor.";
            DevExpress.Utils.LookAndFeelMenu menu = new DevExpress.Utils.LookAndFeelMenu(this, defaultLookAndFeel1, "XtraEditors: LookUp Edit (Data Binding) by Developer Express inc.");
            InitData();
            InitLookUp();
        }

        DataView dvMain, dvProducts;
        private void InitData() {
            string DBFileName = DevExpress.Utils.FilesHelper.FindingFileName(Application.StartupPath, "Data\\nwind.mdb");
            if(DBFileName != "") {
                DataSet ds = new DataSet();
                string con = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + DBFileName;
                    
                System.Data.OleDb.OleDbDataAdapter dbAdapter = new System.Data.OleDb.OleDbDataAdapter("SELECT * FROM [Order Details]", con);
                dbAdapter.Fill(ds, "Order Details");
                dbAdapter = new System.Data.OleDb.OleDbDataAdapter("SELECT * FROM Products", con);
                dbAdapter.Fill(ds, "Products");
                DataViewManager dvm = new DataViewManager(ds);
            
                dvMain = dvm.CreateDataView(ds.Tables["Order Details"]);
                dvProducts = dvm.CreateDataView(ds.Tables["Products"]);
            }
        }

        private void InitLookUp() {
            lookUpEdit1.DataBindings.Add("EditValue", dvMain, "ProductID");
            lookUpEdit1.Properties.DataSource = dvProducts;
            dataNavigator1.DataSource = dvMain;
        }
    }