public async Task <List <Product> > SortProduct(string type)
{
ISorting sorting;
List <Product> productList = await _context.Products
.AsNoTracking()
.ToListAsync();
switch (type)
{
case "name":
sorting = new SortByName();
sorting.ProductSort(ref productList);
break;
case "price":
sorting = new SortByPrice();
sorting.ProductSort(ref productList);
break;
case "quantity":
sorting = new SortByQuantity();
sorting.ProductSort(ref productList);
break;
case "rating":
sorting = new SortByRating();
sorting.ProductSort(ref productList);
break;
default:
sorting = new SortByPrice();
sorting.ProductSort(ref productList);
break;
}
return(productList);
}
static void listDemo()
{
List <Product> lstPro = new List <Product>();
lstPro.Add(new Product {
ProductID = 250, BrandName = "Dell.......", Description = "laptop........", Price = 45000.00
});
lstPro.Add(new Product {
ProductID = 200, BrandName = "Dell.......", Description = "15 inch Monitor", Price = 3400.44
});
lstPro.Add(new Product {
ProductID = 150, BrandName = "Microsoft..", Description = "Windows 7.....", Price = 7000.50
});
lstPro.Add(new Product {
ProductID = 120, BrandName = "Seagate....", Description = "Dvd Drive.....", Price = 540.00
});
lstPro.Add(new Product {
ProductID = 100, BrandName = "Logitech...", Description = "Optical Mouse", Price = 540.00
});
Console.WriteLine("Before Sorting the list is...........");
Console.WriteLine("");
foreach (Product p in lstPro)
{
Console.WriteLine(p.ProductID + "\t\t" + p.BrandName + "\t\t" + p.Description + "\t\t" + p.Price);
}
//by default by product id decreasing order
lstPro.Sort();
Console.WriteLine("After default sort by product id List is......");
Console.WriteLine("");
foreach (Product p in lstPro)
{
Console.WriteLine(p.ProductID + "\t\t" + p.BrandName + "\t\t" + p.Description + "\t\t" + p.Price);
}
//menu driven sorting......
//Option for sorting based on Brand name or price based on input provided at runtime.
//If two products contain same brand name, description should be considered.
//Similarly if products have same price, product id’s should be considered while displaying them in order
Console.WriteLine("Choose one of these........\n1.Sorting based on Brand name" +
"\n2.Sorting based on Description\n3.Sorting based on Price");
int choice = int.Parse(Console.ReadLine());
if (choice == 1)
{
Console.WriteLine("Sort by BrandName.....");
SortByBrand sort_by_brand = new SortByBrand();
lstPro.Sort(sort_by_brand);
}
else if (choice == 2)
{
Console.WriteLine("Sort by Description.....");
SortByDescription sbd = new SortByDescription();
lstPro.Sort(sbd);
}
else if (choice == 3)
{
Console.WriteLine("Sort by Price......");
SortByPrice sbp = new SortByPrice();
lstPro.Sort(sbp);
}
else
{
Console.WriteLine("Wrong Choice Entered......");
}
Console.WriteLine("List values are..........\n");
Console.WriteLine("");
foreach (Product p in lstPro)
{
Console.WriteLine(p.ProductID + "\t\t" + p.BrandName + "\t\t" + p.Description + "\t\t" + p.Price);
}
}
