//get from file
public static AddressDetails GetFromFile()
{
FileStream stream;
string path = @"C:\Users\K.R.DHASHNIGA\source\repos\AddressBookFileIO\AddressBookFileIO\Contact.txt";
try
{
// Open the specified path
// If path is not found then it throws file not found exception
using (stream = new FileStream(path, FileMode.Open))
{
BinaryFormatter formatter = new BinaryFormatter();
// Deserialize the data from file
// If stream is null then it throws Serialization exception
AddressDetails addressBookDetails = (AddressDetails)formatter.Deserialize(stream);
// Copy the details of instance variables to static
cityToContactMap = addressBookDetails.cityToCOntactMapInstance;
stateToContactMap = addressBookDetails.stateToContactMapInstance;
return addressBookDetails;
};
}
catch (FileNotFoundException)
{
Console.WriteLine("file not found");
return new AddressDetails();
}
catch (SerializationException)
{
Console.WriteLine("No previous records");
return new AddressDetails();
}
}
//to add contacts
public void AddContact()
{
Console.WriteLine("\nEnter The First Name of Contact");
firstName = Console.ReadLine();
Console.WriteLine("\nEnter The Last Name of Contact");
lastName = Console.ReadLine();
Console.WriteLine("\nEnter The Address of Contact");
address = Console.ReadLine();
Console.WriteLine("\nEnter The City Name of Contact");
city = Console.ReadLine().ToLower();
Console.WriteLine("\nEnter The State Name of Contact");
state = Console.ReadLine().ToLower();
Console.WriteLine("\nEnter the Zip of Locality of Contact");
zip = Console.ReadLine();
Console.WriteLine("\nEnter The Phone Number of Contact");
phoneNumber = Console.ReadLine();
Console.WriteLine("\nEnter The Email of Contact");
email = Console.ReadLine();
// Creating an instance of contact with given details
Person addNewContact = new Person(firstName, lastName, address, city, state, zip, phoneNumber, email, nameOfAddressBook);
// Checking for duplicates with the equals method
// Loop continues till the given contact not equal to any available contact
while (addNewContact.Equals(contactList))
{
Console.WriteLine("contact already exists");
// Giving option to user to re enter or to exit
Console.WriteLine("Type Y to enter new name or any other key to exit");
// If user wants to re-enter then taking input from user
// Else return
if ((Console.ReadLine().ToLower() == "y"))
{
Console.WriteLine("Enter new first name");
firstName = Console.ReadLine();
Console.WriteLine("Enter new last name");
lastName = Console.ReadLine();
addNewContact = new Person(firstName, lastName, address, city, state, zip, phoneNumber, email, nameOfAddressBook);
}
else
{
return;
}
}
contactList.Add(addNewContact);
AddressDetails.AddToCityDictionary(city, addNewContact);
AddressDetails.AddToStateDictionary(state, addNewContact);
Console.WriteLine("\nContact added successfully");
}
/// <summary>
/// Defines the entry point of the application.
/// </summary>
/// <param name="args">The arguments.</param>
static void Main(string[] args)
{
Console.WriteLine("Welcome To Address Book Program");
// UC 13 Getting the previously stored records
AddressDetails addressBookDetails = AddressDetails.GetFromFile();
bool flag = true;
while (flag)
{
Console.WriteLine("\nType to select address book" +
"\nA - To add or access address book" +
"\nview - To view all names of address books" +
"\nDelete - To delete Address book" +
"\nCity - To search contact in a city" +
"\nState - To search contact in a state" +
"\nVCity - To view all contacts in a city" +
"\nVState - To view all contacts in a state" +
"\nCCity - To get count of contacts city wise" +
"\nCState - To get count of contacts state wise" +
"\nE - To exit\n\n");
switch (Console.ReadLine().ToLower())
{
// To add or access new Address book
case TO_ADD_OR_ACCESS:
addressBookDetails.AddOrAccessAddressBook();
break;
// To view all address book names
case TO_VIEW_ALL_ADDRESSBOOKS:
addressBookDetails.ViewAllAddressBooks();
break;
// To delete an address book
case TO_DELETE_ADDRESS_BOOK:
addressBookDetails.DeleteAddressBook();
break;
// To search for a person in a city
case SEARCH_PERSON_IN_CITY:
addressBookDetails.SearchInCity();
break;
// To search for a person in a state
case SEARCH_PERSON_IN_STATE:
addressBookDetails.SearchInState();
break;
// To view all contacts in a city
case VIEW_ALL_IN_CITY:
addressBookDetails.ViewAllByCity();
break;
// To view all contacts in a city
case VIEW_ALL_IN_STATE:
addressBookDetails.ViewAllByState();
break;
// To get count of contacts in a city
case COUNT_ALL_IN_CITY:
addressBookDetails.CountAllByCity();
break;
// To get count of contacts in a state
case COUNT_ALL_IN_STATE:
addressBookDetails.CountAllByState();
break;
case EXIT:
Console.WriteLine("User exited application");
flag = false;
break;
default:
Console.WriteLine("Invalid entry");
break;
}
}
// UC 13 Writing to the previously stored records.
addressBookDetails.WriteToFile();
}
/// <summary>
/// Updates the contact.
/// </summary>
public void UpdateContact()
{
// If the List have no contacts
if (contactList.Count() == 0)
{
Console.WriteLine("No saved contacts");
return;
}
// Input the name to be updated
Console.WriteLine("\nEnter the name of candidate to be updated");
string name = Console.ReadLine();
// Search the name
Person contact = SearchByName(name);
// If contact doesnt exist
if (contact == null)
{
Console.WriteLine("No record found");
return;
}
// To print details of searched contact
contact.toString();
int updateAttributeNum = 0;
// Getting the attribute to be updated
Console.WriteLine("\nEnter the row number attribute to be updated or 0 to exit");
try
{
updateAttributeNum = Convert.ToInt32(Console.ReadLine());
if (updateAttributeNum == 0)
{
return;
}
}
catch
{
Console.WriteLine("Invalid entry");
return;
}
// Getting the new value of attribute
Console.WriteLine("\nEnter the new value to be entered");
string newValue = Console.ReadLine();
// Updating selected attribute with selected value
switch (updateAttributeNum)
{
case UPDATE_FIRST_NAME:
firstName = contact.firstName;
contact.firstName = newValue;
// If duplicate contact exists with that name then revert the operation
if (contact.Equals(contactList))
{
contact.firstName = firstName;
Console.WriteLine("Contact already exists with that name");
return;
}
break;
case UPDATE_LAST_NAME:
// Store the LastName of given contact in variable
lastName = contact.lastName;
// Update the contact with given name
contact.lastName = newValue;
// If duplicate contact exists with that name then revert the operation
if (contact.Equals(contactList))
{
contact.lastName = lastName;
Console.WriteLine("Contact already exists with that name");
return;
}
break;
case UPDATE_ADDRESS:
contact.address = newValue;
break;
case UPDATE_CITY:
// Remove the contact from city dictionary
AddressDetails.cityToContactMap[contact.city].Remove(contact);
// Update the contact city
contact.city = newValue;
// Add to city dictionary
AddressDetails.AddToCityDictionary(contact.city, contact);
break;
case UPDATE_STATE:
// Remove the contact from state dictionary
AddressDetails.stateToContactMap[contact.state].Remove(contact);
// Update the contact state
contact.state = newValue;
// Add to state dictionary
AddressDetails.AddToStateDictionary(contact.state, contact);
break;
case UPDATE_ZIP:
contact.zip = newValue;
break;
case UPDATE_PHONE_NUMBER:
contact.phoneNumber = newValue;
break;
case UPDATE_EMAIL:
contact.email = newValue;
break;
default:
Console.WriteLine("Invalid Entry");
return;
}
Console.WriteLine("\nUpdate Successful");
}