protected virtual void ExportTabItems()
        {
            string folder =SaveAs();
            if (!string.IsNullOrEmpty(folder))
            {
                var orderItems=new LinkedList<ExportorderItem>();
                orderItems.AddFirst(GenerateHeader());

                foreach (var exportorderItem in OrdersSummaryList.Select(MapExportItem).ToList())
                {
                    orderItems.AddLast(exportorderItem);
                }
                
                using (var sw = new StreamWriter(folder))
                {
                    sw.WriteAsync(orderItems.ToCsv());
                    sw.Close();
                }
                MessageBox.Show("Done", "Distributr Info");
            }
        }