private void SendMail(UserName user, Book book)
{
MailAddress from = new MailAddress("*****@*****.**", "Library");
MailAddress to = new MailAddress(user.Email);
MailMessage msg = new MailMessage(from, to);
msg.Subject = "You have a new book";
msg.Body = string.Format("{0}, you are successfully taken a book called \"{1}\"", user.Name, book.Name);
SmtpClient smtp = new SmtpClient();
smtp.Send(msg);
}
partial void UpdateUserName(UserName instance);
partial void DeleteUserName(UserName instance);
partial void InsertUserName(UserName instance);