private void BindDropdown() { OpenTyreDAL obj = new OpenTyreDAL(); var itemname = obj.BindPurchaseItemName(); obj = null; ddlItemName.DataSource = itemname; ddlItemName.DataTextField = "Item_Name"; ddlItemName.DataValueField = "Item_idno"; ddlItemName.DataBind(); ddlItemName.Items.Insert(0, new System.Web.UI.WebControls.ListItem("--Select--", "0")); }