protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { CBOSDAL ObjCBOSDAL = new CBOSDAL(); ddlCBOS.DataSource = ObjCBOSDAL.CBOSDropDownList(); ddlCBOS.DataTextField = "Descricao"; ddlCBOS.DataValueField = "Codigo"; ddlCBOS.DataBind(); ddlCBOS.Items.Insert(0, new ListItem("<--Selecione-->", string.Empty)); //Texto Inicial do combo } }