public static LlaveFactura GetLastLlaveFactura() { AppSales.DAL.LlaveFacturaDSTableAdapters.LlaveFacturaTableAdapter objDataSet = new AppSales.DAL.LlaveFacturaDSTableAdapters.LlaveFacturaTableAdapter(); LlaveFacturaDS.LlaveFacturaDataTable dtLlaveFactura = objDataSet.GetLastLlaveFactura(); if (dtLlaveFactura.Count > 0) { LlaveFactura objLlaveFactura = rowToDto(dtLlaveFactura[0]); return(objLlaveFactura); } return(null); }