protected async Task GetSales()
{
DateTime dt = new DateTime(int.Parse(SelectedYear), int.Parse(SelectedMonth), 1);
var orders = await OrderDataService.GetPagedOrderForMonth(dt, pageNumber.Value, 5);
paginatedList = new PaginatedList <OrdersForMonthListViewModel>(orders.OrdersForMonth.ToList(), orders.Count, pageNumber.Value, 5);
ordersList = paginatedList.Items;
StateHasChanged();
}