public void GetOpenInvoiceNos() { invObj = new InvoiceClass(); DataTable dtInv = invObj.GetOpenInvoiceNos(); if (dtInv.Rows.Count > 0) { ddlPendingInvoiceNumber.DataSource = dtInv; ddlPendingInvoiceNumber.DataValueField = "invIdUniqueNo"; ddlPendingInvoiceNumber.DataTextField = "invoiceNo"; ddlPendingInvoiceNumber.DataBind(); ddlPendingInvoiceNumber.Items.Insert(0, new ListItem("-- Select Invoice No --", "0")); } else { ddlPendingInvoiceNumber.Items.Insert(0, new ListItem("-- No Pending Invoice --", "0")); } }