public static void ModifyCustomerInfo(string customerId, NORTHWNDEntities dataBase, string companyName = null, string contactName = null, string contactTitle = null, string address = null, string city = null, string region = null, string postalCode = null, string country = null, string phone = null, string fax = null)
{
var customer = dataBase.Customers.FirstOrDefault(x => x.CustomerID.ToLower() == customerId.ToLower());
customer.CompanyName = companyName;
customer.ContactName = contactName;
customer.ContactTitle = contactTitle;
customer.Address = address;
customer.City = city;
customer.Region = region;
customer.PostalCode = postalCode;
customer.Country = country;
customer.Phone = phone;
customer.Fax = fax;
dataBase.SaveChanges();
}
public static void InsertCustomer(Customer customer, NORTHWNDEntities dataBase)
{
dataBase.Customers.Add(customer);
dataBase.SaveChanges();
}
public static void DeleteCustomer(string customerId, NORTHWNDEntities dataBase)
{
var customer = dataBase.Customers.FirstOrDefault(x => x.CustomerID.ToLower() == customerId.ToLower());
dataBase.Customers.Remove(customer);
dataBase.SaveChanges();
}