// Send to Excel Implementation


        public async Task Send2Excel()
        {
            IEnumerable <xcuda_Supplementary_unit> lst = null;

            using (var ctx = new xcuda_Supplementary_unitRepository())
            {
                lst = await ctx.Getxcuda_Supplementary_unitByExpressionNav(vloader.FilterExpression, vloader.NavigationExpression).ConfigureAwait(continueOnCapturedContext: false);
            }
            if (lst == null || !lst.Any())
            {
                MessageBox.Show("No Data to Send to Excel");
                return;
            }
            var s = new ExportToExcel <xcuda_Supplementary_unitExcelLine, List <xcuda_Supplementary_unitExcelLine> >
            {
                dataToPrint = lst.Select(x => new xcuda_Supplementary_unitExcelLine
                {
                    Suppplementary_unit_quantity = x.Suppplementary_unit_quantity,


                    Suppplementary_unit_code = x.Suppplementary_unit_code,


                    Suppplementary_unit_name = x.Suppplementary_unit_name,


                    IsFirstRow = x.IsFirstRow
                }).ToList()
            };

            using (var sta = new StaTaskScheduler(numberOfThreads: 1))
            {
                await Task.Factory.StartNew(s.GenerateReport, CancellationToken.None, TaskCreationOptions.None, sta).ConfigureAwait(false);
            }
        }
        public async Task SelectAll()
        {
            IEnumerable <xcuda_Supplementary_unit> lst = null;

            using (var ctx = new xcuda_Supplementary_unitRepository())
            {
                lst = await ctx.Getxcuda_Supplementary_unitByExpressionNav(vloader.FilterExpression, vloader.NavigationExpression).ConfigureAwait(continueOnCapturedContext: false);
            }
            Selectedxcuda_Supplementary_unit = new ObservableCollection <xcuda_Supplementary_unit>(lst);
        }