using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace CSD03
{
class Program
{
static void Main(string[] args)
{
IEnumerable<ProductDataItem> productDataItems = ProductData.GetData();
IEnumerable<StockDataItem> stockDataItems = StockData.GetData();
// TODO: write LINQ statements and output result.
// TODO: must use Lambda Expression to handle condition.
var query = from p in productDataItems
join s in stockDataItems
on p.ProductID equals s.ProductID
select new
{
id = p.ProductID,
cost = p.Cost,
stock = s.Stock,
total = p.Cost * s.Stock
};
var query2 = query.Where(row => row.cost * row.stock >= 250000);
foreach (var row in query2)
{
Console.WriteLine("Product id: {0}, cost: {1}, stock: {2}, total: ${3:N0}",row.id, row.cost, row.stock, row.total);
}
Console.ReadLine();
}
}
}
留言列表