public void AddContact(Contact contact)
{
if (contact == null)
{
throw new ArgumentNullException("Contact is empty!");
}
this.contactsByName.Add(contact.Name, contact);
Tuple<string, string> nameAndTown = new Tuple<string, string>(contact.Name, contact.Town);
this.contactsByNameAndTown.Add(nameAndTown, contact);
Debug.Assert(this.contactsByName.KeyValuePairs.Count == this.contactsByNameAndTown.KeyValuePairs.Count);
}
public bool RemoveContact(Contact contact)
{
if (!contactsByName.Contains(contact.Name, contact))
{
throw new ArgumentException("Phone book does not contain such contact.");
}
Contact removedContact = contact;
bool byName = this.contactsByName.Remove(contact.Name, contact);
Tuple<string, string> nameAndTown = new Tuple<string, string>(contact.Name, contact.Town);
bool byNameAndTown = this.contactsByNameAndTown.Remove(nameAndTown, contact);
Debug.Assert(byName == byNameAndTown);
return byName && byNameAndTown;
}
public void Parse(string path)
{
StreamReader reader = new StreamReader(path);
using (reader)
{
string line = reader.ReadLine();
while (line != null)
{
string[] parsedData = line.Split('|');
string name = parsedData[0].Trim();
string town = parsedData[1].Trim();
string phone = parsedData[2].Trim();
Contact toBeAdded = new Contact(name, town, phone);
this.AddContact(toBeAdded);
line = reader.ReadLine();
}
}
}
