private static void ListProducts()
{
using (var dbContext = new CoffeeShopDbContext())
{
dbContext.Database.Log = Console.WriteLine;
var productList = dbContext.Products.Include(p => p.ProductType).ToList();
foreach (var product in productList)
{
Console.WriteLine($"{product.ProductType.Description} {product.Description} {product.FullPrice}");
}
}
}
private static void ListProductTypes()
{
using (var dbContext = new CoffeeShopDbContext())
{
dbContext.Database.Log = Console.WriteLine;
var lista = dbContext.ProductTypes.ToList();
foreach (var productType in lista)
{
Console.WriteLine(productType.Description);
}
}
}
private static void AddingNewProductType()
{
using (var dbContext = new CoffeeShopDbContext())
{
dbContext.Database.Log = Console.WriteLine;
var productType = new ProductType()
{
Description = "Who Knocks"
};
dbContext.ProductTypes.Add(productType);
dbContext.SaveChanges();
}
}
private static void ListFilteredProducts()
{
using (var dbContext = new CoffeeShopDbContext())
{
//IQueryable<Product> listProducts = dbContext.Products;
//listProducts = listProducts.Where(p => p.FullPrice > 150);
dbContext.Database.Log = Console.WriteLine;
var productList = dbContext.Products.Where(p => p.FullPrice > 150)
.OrderByDescending(p => p.FullPrice)
.ToList();
foreach (var product in productList)
{
Console.WriteLine($"{product.Description} - {product.FullPrice}");
}
}
}
private static void UpdateProduct()
{
using (var dbContext = new CoffeeShopDbContext())
{
dbContext.Database.Log = Console.WriteLine;
var productListBeforeUpdate = dbContext.Products.ToList();
DisplayProductList(productListBeforeUpdate);
var modifiedProduct = dbContext.Products
.SingleOrDefault(p => p.Description == "Medium Coffee");
if (modifiedProduct == null)
{
return;
}
modifiedProduct.FullPrice += 1.20m;
dbContext.SaveChanges();
var productListAfterUpdate = dbContext.Products.ToList();
Console.WriteLine("==================================");
DisplayProductList(productListAfterUpdate);
}
}
private static void DeleteProductType()
{
using (var dbContext = new CoffeeShopDbContext())
{
dbContext.Database.Log = Console.WriteLine;
var productTypeListBeforeDelete = dbContext.ProductTypes.ToList();
DisplayProductTypeList(productTypeListBeforeDelete);
var deleteProductType = dbContext.ProductTypes
.SingleOrDefault(p => p.Description == "Who Knocks");
if (deleteProductType == null)
{
return;
}
dbContext.ProductTypes.Remove(deleteProductType);
dbContext.SaveChanges();
var productTypeListAfterDelete = dbContext.ProductTypes.ToList();
DisplayProductTypeList(productTypeListAfterDelete);
}
}
private static void TrackingEntities()
{
using (var dbContext = new CoffeeShopDbContext())
{
dbContext.Database.Log = Console.WriteLine;
var typeList = dbContext.ProductTypes.AsNoTracking().ToList();
foreach (var productType in typeList)
{
Console.WriteLine(productType.Description);
}
var productTypeModified = typeList[1];
productTypeModified.Description = "XXX";
dbContext.Entry(productTypeModified).State = EntityState.Modified;
foreach (var entry in dbContext.ChangeTracker.Entries())
{
Console.WriteLine("Entity Name: {0}", entry.Entity.GetType().FullName);
Console.WriteLine("Status: {0}", entry.State);
}
}
}
