public static void AddNewMember(Member m)
{
var context = new CommerceDbContext();
context.Members.Add(m);
context.SaveChanges();
}
internal static Product GetProductById(int id)
{
CommerceDbContext context = new CommerceDbContext();
Product p = context.Products.Find(id);
return(p);
}
public static void DeleteProduct(int id)
{
var context = new CommerceDbContext();
Product p = context.Products.Find(id);
context.Products.Remove(p);
context.SaveChanges();
}
public static void Update(Product p)
{
var context = new CommerceDbContext();
// tells EF this product has only been modified
context.Entry(p).State = System.Data.Entity.EntityState.Modified;
// send update querty to the database
context.SaveChanges();
}
internal static bool UserExists(LoginViewModel login)
{
var db = new CommerceDbContext();
bool doesExist =
(from member in db.Members
where member.Username == login.Username &&
member.Password == login.Password
select member).Any();
return(doesExist);
}
public static bool IsUserNameTaken(RegistrationViewModel Reg)
{
// check if username is in use
var db = new CommerceDbContext();
bool isNameTaken =
(from mem in db.Members
where mem.Username == Reg.Username
select mem).Count() == 1;
return(isNameTaken);
}
/// <summary>
/// Add product to the database
/// </summary>
/// <param name="p">Product to be added</param>
public static void AddProduct(Product p)
{
//Create instance of DBContext class
var context = new CommerceDbContext();
//Prepare insert statement
context.Products.Add(p);
//Execute pending insert
context.SaveChanges();
}
internal static List <Product> GetProductsByPage(int page, byte pageSize)
{
CommerceDbContext context = new CommerceDbContext();
List <Product> prodList =
context
.Products
.Take(pageSize)
.OrderBy(p => p.Name)
.Skip((page - 1) * pageSize)
.ToList();
return(prodList);
}
/// <summary>
/// Gets all products sorted by product name
/// </summary>
/// <returns></returns>
public static List <Product> GetAllProducts()
{
//LINQ (Language Integrated Query)
var db = new CommerceDbContext();
//What we are trying to do
//SELECT * FROM Products ORDER BY Name
//Method 1: LINQ Query Syntax
List <Product> products =
(from p in db.Products
orderby p.Name
select p).ToList();
//Method 2: LINQ Method Syntax
List <Product> products2 =
db.Products
.OrderBy(p => p.Name)
.ToList();
return(products);
}
public static int GetTotalNumProducts()
{
var context = new CommerceDbContext();
return(context.Products.Count());
}
