public static IEnumerable <Sale> SortSales(IEnumerable <Sale> sales, SaleSortCriteria sortCriteria)
{
switch (sortCriteria)
{
case SaleSortCriteria.Default:
return(sales.OrderBy(sale => sale.Id));
case SaleSortCriteria.AscendingSum:
return(sales.OrderBy(sale => sale.Sum));
case SaleSortCriteria.DescendingSum:
return(sales.OrderByDescending(sale => sale.Sum));
default:
return(null);
}
}
public async Task <ActionResult> Info(int?manager, int?customer, SaleSortCriteria criteria = SaleSortCriteria.Default, int pageNumber = 1)
{
IEnumerable <Sale> sales = await Task.Run(() => SaleService.Sales.ToList());
var managerId = manager ?? 0;
if (managerId != 0)
{
sales = SaleService.FilterByManager(sales, managerId);
}
var customerId = customer ?? 0;
if (customerId != 0)
{
sales = SaleService.FilterByCustomer(sales, customerId);
}
sales = await Task.Run(() => SaleService.SortSales(sales, criteria));
int pageSize = Convert.ToInt32(ConfigurationManager.AppSettings.Get("PageSize"));
var saleViewModel = new SaleViewModel
{
PageInfo = new PageInfo(currentPageNumber: pageNumber, pageSize: pageSize, totalItems: sales.Count()),
SalesPerPage = PageInfo.GetItemsPerPage(sales, pageNumber, pageSize),
SortingFilters = new SelectList(Enum.GetValues(typeof(SaleSortCriteria)), criteria),
Managers = await CreateManagerSelectList(managerId),
Customers = await CreateCustomerSelectList(customerId)
};
return(PartialView(saleViewModel));
}
