public void AddAccount(Customer c,Account a)
{
c.Accounts.Add(a);
}
public void DelAccount(Customer c, Account a)
{
c.Accounts.Remove(a);
}
public void CreateCustomer(string name,string email)
{
List<Account> accounts = new List<Account>();
Customer c = new Customer(name, email, accounts);
Customers.Add(c);
refresh();
}