private void ButtonPageNext_OnClicked(object sender, EventArgs e) { var endPage = Pager.EndPage = vm.GetEndPage(); var hasChanges = false; if (Pager.CurrentPage != (int)endPage) { Pager.CurrentPage++; } if (vm.IsCollectionChanged || (vm.SelectedSaleTracker?.ChangedProperties != null && vm.SelectedSaleTracker.ChangedProperties.Count > 0)) { hasChanges = true; } vm.ReloadSalesLines(); if (!vm.SelectedSale.IsNotTendered) { ClearChangeTracker(); } else { if (!hasChanges) { ClearChangeTracker(); } } }