static void Main(string[] args)
{
var categories = new MyCollection <Category>
{
new Category()
{
Id = 1, CategoryName = "Stationary"
},
new Category()
{
Id = 2, CategoryName = "Electronics"
}
};
var firstProduct = new Product()
{
Id = 108, Name = "Pen", Cost = 221, Units = 12, CategoryId = 2
};
var products = new MyCollection <Product>();
products.Add(firstProduct);
products.Add(new Product()
{
Id = 102, Name = "Hen", Cost = 218, Units = 62, CategoryId = 1
});
products.Add(new Product()
{
Id = 106, Name = "Ken", Cost = 217, Units = 92, CategoryId = 1
});
products.Add(new Product()
{
Id = 101, Name = "Ten", Cost = 245, Units = 27, CategoryId = 2
});
products.Add(new Product()
{
Id = 109, Name = "Den", Cost = 223, Units = 23, CategoryId = 1
});
products.Add(new Product()
{
Id = 105, Name = "Len", Cost = 210, Units = 24, CategoryId = 2
});
MyCollectionUtils.Search(products, p => p.Units > 20);
Console.WriteLine("Initial List");
Console.WriteLine("Total Productsa = {0}", products.Count());
Console.WriteLine("=========================================");
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by default order");
Console.WriteLine("=========================================");
products.Sort();
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Cost");
Console.WriteLine("=========================================");
products.Sort(new ProductComparerByCost());
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Units");
Console.WriteLine("=========================================");
products.Sort(new ProductComparerByUnits());
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Cost [using Delegates]");
Console.WriteLine("=========================================");
products.Sort((left, right) => Math.Sign(left.Cost - right.Cost));
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Id [using Delegates]");
Console.WriteLine("=========================================");
products.Sort((left, right) => Math.Sign(left.Id - right.Id));
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Costly Products - cost > 220");
Console.WriteLine("=========================================");
var costlyProductsCriteria = new CostlyProductSearchCriteria(220);
var costlyProducts = products.Search(costlyProductsCriteria);
foreach (var product in costlyProducts)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Cheap Products - cost <= 220");
Console.WriteLine("=========================================");
var cheapProductsCriteria = new InverseCriteria <Product>(costlyProductsCriteria);
var cheapProducts = products.Search(cheapProductsCriteria);
foreach (var product in cheapProducts)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Fast moving poducts - [Search using delegates where Units < 50]");
Console.WriteLine("================================================================");
var fastMovingProducts = products.Search(p => p.Units < 50);
foreach (var product in fastMovingProducts)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Mininum Units in Products");
Console.WriteLine("=========================================");
Console.WriteLine(products.Min(p => p.Units));
Console.WriteLine("Mininum Cost in Products");
Console.WriteLine("=========================================");
Console.WriteLine(products.Min(p => p.Cost));
Console.WriteLine("Number of products with Units > 50");
Console.WriteLine("=========================================");
Console.WriteLine(products.Count(p => p.Units > 50));
Console.WriteLine("=========================================");
Console.WriteLine("Products transformed to ProductViewModels");
Console.WriteLine("=========================================");
products.Transform(p => new ProductViewModel()
{
Id = p.Id, Name = p.Name
})
.ForEach(pvm => Console.WriteLine(pvm.Format()));
Console.WriteLine();
Console.WriteLine("Is Products containing first product?");
Console.WriteLine("=========================================");
Console.WriteLine(products.Contains(firstProduct));
Console.WriteLine();
Console.WriteLine("Is Products containing product with 1001");
Console.WriteLine("=========================================");
Console.WriteLine(products.Contains(new Product()
{
Id = 1001
}, new IdEqualityComparer <Product>()));
Console.WriteLine();
Console.WriteLine("Products grouped by Category");
Console.WriteLine("=========================================");
var productsByCategory = products.GroupBy(p => p.CategoryId);
foreach (var productByCategory in productsByCategory)
{
Console.WriteLine("Category = {0}", productByCategory.Key);
foreach (var product in productByCategory.Value)
{
Console.WriteLine("\t{0}", product.Format("\t"));
}
}
Console.WriteLine();
Console.WriteLine("Products with Category");
Console.WriteLine("=========================================");
var productsWithCategory = products.Join(categories, p => p.CategoryId, c => c.Id,
(p, c) =>
new ProductCategoryViewModel()
{
Id = p.Id,
ProductName = p.Name,
Cost = p.Cost,
Units = p.Units,
CategoryName = c.CategoryName
});
productsWithCategory.ForEach(pc => Console.WriteLine(pc.Format("\t")));
Console.ReadLine();
}
static void Main(string[] args)
{
var products = new MyCollection <Product>();
products.Add(new Product()
{
Id = 108, Name = "Pen", Cost = 221, Units = 12
});
products.Add(new Product()
{
Id = 102, Name = "Hen", Cost = 218, Units = 62
});
products.Add(new Product()
{
Id = 106, Name = "Ken", Cost = 217, Units = 92
});
products.Add(new Product()
{
Id = 101, Name = "Ten", Cost = 245, Units = 27
});
products.Add(new Product()
{
Id = 109, Name = "Den", Cost = 223, Units = 23
});
products.Add(new Product()
{
Id = 105, Name = "Len", Cost = 210, Units = 24
});
Console.WriteLine("Initial List");
Console.WriteLine("Total Productsa = {0}", products.Count());
Console.WriteLine("=========================================");
foreach (var product in products)
{
Console.WriteLine(product);
}
/*var enumerator = (IEnumerator) products;
* while (enumerator.MoveNext())
* {
* var current = (Product) enumerator.Current;
* Console.WriteLine(current);
* }*/
/*for(var i=0;i<products.Count;i++)
* Console.WriteLine(products[i]);
*/
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by default order");
Console.WriteLine("=========================================");
products.Sort();
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Cost");
Console.WriteLine("=========================================");
products.Sort(new ProductComparerByCost());
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Units");
Console.WriteLine("=========================================");
products.Sort(new ProductComparerByUnits());
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Cost [using Delegates]");
Console.WriteLine("=========================================");
//Using explicit methods
//products.Sort(Program.CompareProductByCost);
//Using Anonymous Methods
/*products.Sort(delegate (Product left, Product right)
* {
* if (left.Cost > right.Cost) return 1;
* if (left.Cost < right.Cost) return -1;
* return 0;
* });*/
//Lambda Expressions
//Step - 1
/*products.Sort((left, right) =>
* {
* if (left.Cost > right.Cost) return 1;
* if (left.Cost < right.Cost) return -1;
* return 0;
* });*/
//Step-2
/*products.Sort((left, right) =>
* {
* return Math.Sign(left.Cost - right.Cost);
* });*/
//Step-3
products.Sort((left, right) => Math.Sign(left.Cost - right.Cost));
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Products sorted by Id [using Delegates]");
Console.WriteLine("=========================================");
products.Sort((left, right) => Math.Sign(left.Id - right.Id));
foreach (var product in products)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Costly Products - cost > 220");
Console.WriteLine("=========================================");
var costlyProductsCriteria = new CostlyProductSearchCriteria(220);
var costlyProducts = products.Search(costlyProductsCriteria);
foreach (var product in costlyProducts)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Cheap Products - cost <= 220");
Console.WriteLine("=========================================");
var cheapProductsCriteria = new InverseCriteria <Product>(costlyProductsCriteria);
var cheapProducts = products.Search(cheapProductsCriteria);
foreach (var product in cheapProducts)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Fast moving poducts - [Search using delegates where Units < 50]");
Console.WriteLine("================================================================");
var fastMovingProducts = products.Search(p => p.Units < 50);
foreach (var product in fastMovingProducts)
{
Console.WriteLine(product);
}
Console.WriteLine("=========================================");
Console.WriteLine("Mininum Units in Products");
Console.WriteLine("=========================================");
Console.WriteLine(products.Min(p => p.Units));
Console.WriteLine("Mininum Cost in Products");
Console.WriteLine("=========================================");
Console.WriteLine(products.Min(p => p.Cost));
Console.WriteLine("Number of products with Units > 50");
Console.WriteLine("=========================================");
Console.WriteLine(products.Count(p => p.Units > 50));
Console.ReadLine();
}