public static void Main()
{
using (var northwind = new NorthwindEntities())
{
Customer customer = new Customer();
customer.Address = "155, Madison Avenue";
customer.City = "New York";
customer.CompanyName = "Company";
customer.Country = "United States";
customer.CustomerID = "US123";
customer.ContactName = "James Peterson";
Console.WriteLine(InsertModifyDeleteCustomers.AddCustomer(northwind, customer));
Customer anotherCustomer = new Customer();
anotherCustomer.CustomerID = "US123";
anotherCustomer.Address = "253, Madison Avenue";
anotherCustomer.City = "New York";
anotherCustomer.CompanyName = "Another company";
anotherCustomer.Country = "United States";
anotherCustomer.ContactName = "Peter Jameson";
Console.WriteLine(InsertModifyDeleteCustomers.ModifyCustomerById(northwind, "COMPA", anotherCustomer));
Console.WriteLine(InsertModifyDeleteCustomers.DeleteCustomer(northwind, anotherCustomer));
}
}
public static string AddCustomer(NorthwindEntities northwind, Customer customer)
{
northwind.Customers.Add(customer);
northwind.SaveChanges();
return "Customer added";
}
public static string DeleteCustomer(NorthwindEntities northwind, Customer newCustomer)
{
var selectedCustomer = northwind.Customers.Where(c => c.CustomerID == newCustomer.CustomerID).FirstOrDefault();
northwind.Customers.Remove(selectedCustomer);
northwind.SaveChanges();
return "Customer deleted";
}
public static int InsertCustomer(string contactName, string companyName)
{
using (NorthwindEntities db = new NorthwindEntities())
{
Customer customer = new Customer()
{
ContactName = contactName,
CompanyName = companyName,
CustomerID = GetCustomerId(companyName),
};
if (IsCustomerExists(db, GetCustomerId(companyName)))
{
throw new ArgumentException("Customer already exist!!!");
}
db.Customers.Add(customer);
return db.SaveChanges();
}
}
public static string ModifyCustomerById(NorthwindEntities northwind, string customerId, Customer newCustomer)
{
var selectedCustomer = northwind.Customers.Where(c => c.CustomerID == customerId).FirstOrDefault();
selectedCustomer.Address = newCustomer.Address;
selectedCustomer.City = newCustomer.City;
selectedCustomer.CompanyName = newCustomer.CompanyName;
selectedCustomer.ContactName = newCustomer.ContactName;
selectedCustomer.ContactTitle = newCustomer.ContactTitle;
selectedCustomer.Country = newCustomer.Country;
selectedCustomer.CustomerDemographics = newCustomer.CustomerDemographics;
selectedCustomer.Fax = newCustomer.Fax;
selectedCustomer.Orders = newCustomer.Orders;
selectedCustomer.Phone = newCustomer.Phone;
selectedCustomer.PostalCode = newCustomer.PostalCode;
selectedCustomer.Region = newCustomer.Region;
northwind.SaveChanges();
return "Customer modified";
}
public static void AddCustomer(string id, string companyName)
{
var customer = new Customer
{
CustomerID = id,
CompanyName = companyName
};
NorthwindEntities db = new NorthwindEntities();
if (!CustomerExistsInDb(db, id))
{
db.Customers.Add(customer);
db.SaveChanges();
Console.WriteLine("Company added -> {0}", companyName);
}
else
{
throw new ArgumentException("There is already a person with the same id in the databse!");
}
}
private bool FilterCustomer(Customer entity)
{
return (entity.CustomerID == this.CustomerID);
}
/// <summary>
/// Deprecated Method for adding a new object to the Customers EntitySet. Consider using the .Add method of the associated ObjectSet<T> property instead.
/// </summary>
public void AddToCustomers(Customer customer)
{
base.AddObject("Customers", customer);
}
/// <summary>
/// Create a new Customer object.
/// </summary>
/// <param name="customerID">Initial value of the CustomerID property.</param>
/// <param name="companyName">Initial value of the CompanyName property.</param>
public static Customer CreateCustomer(global::System.String customerID, global::System.String companyName)
{
Customer customer = new Customer();
customer.CustomerID = customerID;
customer.CompanyName = companyName;
return customer;
}
