public static void InsertCustomer(Customer customer)
{
using (var db = new NorthwindEntities())
{
if (customer==null)
{
throw new ArgumentNullException("Customer cannot be null");
}
db.Customers.Add(customer);
db.SaveChanges();
}
Console.WriteLine("Customer added");
}
static void Main()
{
//2.Create a DAO class with static methods which provide functionality for inserting, modifying and deleting customers. Write a testing class.
Customer pesho = new Customer()
{
CustomerID = "test",
ContactName = "Pesho",
Country = "BG",
CompanyName = "Pesho OOD"
};
CustomersOperations.InsertCustomer(pesho);
CustomersOperations.ModifyCustomer("test", "Gosho");
CustomersOperations.DeleteCustomer("test");
}
// TASK 2
// Create a DAO class with static methods which provide functionality for inserting, modifying and deleting customers.
// Write a testing class.
static void Add(string name, string id)
{
Customer newCustomer = new Customer()
{
CompanyName = name,
CustomerID = id
};
using (NorthwindEntities db = new NorthwindEntities())
{
bool isInDB = IsInDataBase(db, id);
if (!isInDB)
{
db.Customers.Add(newCustomer);
db.SaveChanges();
Console.WriteLine("Added Successful.");
}
else
{
throw new ArgumentException("Such customer already exists");
}
}
}