public static BLProduct RetrieveFromDB(string databaseConnectionString, int id)
{
SqlConnection sqlConnection = new SqlConnection(databaseConnectionString);
SqlCommand sqlGetProduct = new SqlCommand($"SELECT CategoryID, Name, Description, Price, Popularity, StockQuantity, VAT FROM Products WHERE ID = {id}", sqlConnection);
SqlDataReader sqlReader = null;
try
{
sqlConnection.Open();
sqlReader = sqlGetProduct.ExecuteReader();
while (sqlReader.Read())
{
BLProduct product = new BLProduct(id: id, categoryId: int.Parse(sqlReader["CategoryID"].ToString()),
name: sqlReader["Name"].ToString(), description: sqlReader["Description"].ToString(),
price: double.Parse(sqlReader["Price"].ToString()),
popularity: int.Parse(sqlReader["Popularity"].ToString()),
stockQuantity: int.Parse(sqlReader["StockQuantity"].ToString()),
VAT: double.Parse(sqlReader["VAT"].ToString()));
product.GetDiscountFromDB(databaseConnectionString);
product.GetTrailerUrlFromDB(databaseConnectionString);
return product;
}
return null;
}
finally
{
if (sqlReader != null)
{
sqlReader.Close();
sqlReader.Dispose();
}
sqlConnection.Close();
sqlConnection.Dispose();
sqlGetProduct.Dispose();
}
}
private void LoadProduct(int productId)
{
product = BLProduct.RetrieveFromDB(connectionString, productId);
if (product == null)
throw new HttpException(404, $"Product.aspx?productId={productId} doesn't exist.");
productImage.Src = $"ImgHandler.ashx?productId={productId}";
productTitle.InnerText = product.Name;
if (product.Discount > 0)
{
originalProductPrice.InnerText = "£" + product.Price;
originalProductPrice.Visible = true;
double newPrice = product.Price * (1 - product.Discount / 100);
productPrice.Visible = false;
discountProductPrice.Visible = true;
discountProductPrice.InnerText = "£" + newPrice;
}
else
productPrice.InnerText = "£" + product.Price;
productDescription.InnerText = product.Description;
if (product.TrailerUrl != null)
{
linkViewTrailer.Visible = true;
linkViewTrailer.HRef = product.TrailerUrl;
}
}
public static List <BLProduct> RetrieveTopNPopularProductsFromDB(string databaseConnectionString,
int numberOfProducts)
{
List <BLProduct> products = new List <BLProduct>();
SqlConnection sqlConnection = new SqlConnection(databaseConnectionString);
SqlCommand sqlGetPopularProducts = new SqlCommand($"SELECT TOP {numberOfProducts} ID, CategoryID, Name, Description, Price, Popularity, StockQuantity, VAT FROM Products ORDER BY Popularity DESC", sqlConnection);
SqlDataReader sqlReader = null;
try
{
sqlConnection.Open();
sqlReader = sqlGetPopularProducts.ExecuteReader();
while (sqlReader.Read())
{
BLProduct product = new BLProduct(id: int.Parse(sqlReader["ID"].ToString()), categoryId: int.Parse(sqlReader["CategoryID"].ToString()),
name: sqlReader["Name"].ToString(), description: sqlReader["Description"].ToString(),
price: double.Parse(sqlReader["Price"].ToString()),
popularity: int.Parse(sqlReader["Popularity"].ToString()),
stockQuantity: int.Parse(sqlReader["StockQuantity"].ToString()),
VAT: double.Parse(sqlReader["VAT"].ToString()));
product.GetDiscountFromDB(databaseConnectionString);
product.GetTrailerUrlFromDB(databaseConnectionString);
products.Add(product);
}
return(products);
}
finally
{
if (sqlReader != null)
{
sqlReader.Close();
sqlReader.Dispose();
}
sqlConnection.Close();
sqlConnection.Dispose();
sqlGetPopularProducts.Dispose();
}
}
public static BLProduct RetrieveFromDB(string databaseConnectionString, int id)
{
SqlConnection sqlConnection = new SqlConnection(databaseConnectionString);
SqlCommand sqlGetProduct = new SqlCommand($"SELECT CategoryID, Name, Description, Price, Popularity, StockQuantity, VAT FROM Products WHERE ID = {id}", sqlConnection);
SqlDataReader sqlReader = null;
try
{
sqlConnection.Open();
sqlReader = sqlGetProduct.ExecuteReader();
while (sqlReader.Read())
{
BLProduct product = new BLProduct(id: id, categoryId: int.Parse(sqlReader["CategoryID"].ToString()),
name: sqlReader["Name"].ToString(), description: sqlReader["Description"].ToString(),
price: double.Parse(sqlReader["Price"].ToString()),
popularity: int.Parse(sqlReader["Popularity"].ToString()),
stockQuantity: int.Parse(sqlReader["StockQuantity"].ToString()),
VAT: double.Parse(sqlReader["VAT"].ToString()));
product.GetDiscountFromDB(databaseConnectionString);
product.GetTrailerUrlFromDB(databaseConnectionString);
return(product);
}
return(null);
}
finally
{
if (sqlReader != null)
{
sqlReader.Close();
sqlReader.Dispose();
}
sqlConnection.Close();
sqlConnection.Dispose();
sqlGetProduct.Dispose();
}
}
private void AddToCart(BLProduct product)
{
int quantityAdded = 1;
List<BLCartProduct> cartList;
if (Session["cartList"] != null)
cartList = (List<BLCartProduct>)Session["cartList"];
else
cartList = new List<BLCartProduct>();
bool alreadyInCart = false;
foreach (BLCartProduct cartProduct in cartList)
{
if (cartProduct.Id == product.Id)
{
alreadyInCart = true;
if ((quantityAdded + cartProduct.Quantity) > product.StockQuantity)
quantityAdded = product.StockQuantity - cartProduct.Quantity;
cartProduct.Quantity += quantityAdded;
break;
}
}
if (!alreadyInCart)
cartList.Add(new BLCartProduct(id: product.Id, quantity: quantityAdded));
int cartCount = 0;
if (Session["cartCount"] != null)
cartCount = (int)Session["cartCount"];
cartCount += quantityAdded;
Session["cartCount"] = cartCount;
Session["cartList"] = cartList;
Response.Redirect("Home.aspx");
}
public static List<BLProduct> RetrieveTopNPopularProductsFromDB(string databaseConnectionString,
int numberOfProducts)
{
List<BLProduct> products = new List<BLProduct>();
SqlConnection sqlConnection = new SqlConnection(databaseConnectionString);
SqlCommand sqlGetPopularProducts = new SqlCommand($"SELECT TOP {numberOfProducts} ID, CategoryID, Name, Description, Price, Popularity, StockQuantity, VAT FROM Products ORDER BY Popularity DESC", sqlConnection);
SqlDataReader sqlReader = null;
try
{
sqlConnection.Open();
sqlReader = sqlGetPopularProducts.ExecuteReader();
while (sqlReader.Read())
{
BLProduct product = new BLProduct(id: int.Parse(sqlReader["ID"].ToString()), categoryId: int.Parse(sqlReader["CategoryID"].ToString()),
name: sqlReader["Name"].ToString(), description: sqlReader["Description"].ToString(),
price: double.Parse(sqlReader["Price"].ToString()),
popularity: int.Parse(sqlReader["Popularity"].ToString()),
stockQuantity: int.Parse(sqlReader["StockQuantity"].ToString()),
VAT: double.Parse(sqlReader["VAT"].ToString()));
product.GetDiscountFromDB(databaseConnectionString);
product.GetTrailerUrlFromDB(databaseConnectionString);
products.Add(product);
}
return products;
}
finally
{
if (sqlReader != null)
{
sqlReader.Close();
sqlReader.Dispose();
}
sqlConnection.Close();
sqlConnection.Dispose();
sqlGetPopularProducts.Dispose();
}
}